Castle Metals de Mexicali, S. A. de C. V. S-4/A17 Mar 202019 FY Registration of securities issued in business combination transactions (amended)Financial data

Company Profile

Cover

Cover	12 Months Ended
Cover	Dec. 31, 2019
Cover page.
Document Type	S-4/A
Entity Registrant Name	A. M. CASTLE & CO.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	36-0879160
Entity Address, Postal Zip Code	60523
City Area Code	847
Local Phone Number	455-7111
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Central Index Key	0000018172
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Address, Address Line One	1420 Kensington Road, Suite 220,
Entity Address, City or Town	Oak Brook,
Entity Address, State or Province	IL
Entity Filer Category	Non-accelerated Filer

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net sales	$ 559,591	$ 581,970
Costs and expenses:
Cost of materials (exclusive of depreciation)	418,806	437,052
Warehouse, processing and delivery expense	77,567	83,635
Sales, general and administrative expense	64,557	68,933
Depreciation expense	8,759	9,082
Other income, net	(6,586)	(7,980)
Income tax benefit	(4,899)	(4,779)
Net loss	(38,515)	(37,145)
Total costs and expenses	569,689	598,702
Operating loss	(10,098)	(16,732)
Interest expense, net	39,902	33,172
Loss before income taxes	$ (43,414)	$ (41,924)
Basic and diluted loss per common share (in usd per share)	$ (17.62)	$ (18.57)
Comprehensive loss:
Net loss	$ (38,515)	$ (37,145)
Change in unrecognized pension and postretirement benefit costs, net of tax effect of $732 and $(3,060), respectively	(2,082)	9,187
Foreign currency translation adjustments, net of tax	(1,108)	(2,492)
Comprehensive loss	$ (37,541)	$ (48,824)

Consolidated Statements of Op_2

Consolidated Statements of Operations and Comprehensive (Loss) Income - (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Unrecognized pension and postretirement benefit costs - tax effect	$ 732	$ (3,060)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 6,433	$ 8,668
Accounts receivable, less allowances of $1,766 and $1,364, respectively	74,697	79,757
Inventories	144,411	160,686
Prepaid expenses and other current assets	9,668	14,344
Income tax receivable	1,995	1,268
Total current assets	237,204	264,723
Goodwill and intangible assets	8,176	8,176
Prepaid pension cost	5,758	1,754
Deferred income taxes	1,534	1,261
Operating right-of-use assets	29,423
Other noncurrent assets	792	1,278
Property, plant and equipment:
Land	5,579	5,577
Buildings	20,950	21,218
Machinery and equipment	41,054	38,394
Property, plant and equipment, at cost	67,583	65,189
Accumulated depreciation	(20,144)	(11,989)
Property, plant and equipment, net	47,439	53,200
Total assets	330,326	330,392
Current liabilities:
Accounts payable	41,745	42,719
Accrued payroll and employee benefits	7,648	11,307
Accrued and other current liabilities	3,540	5,324
Operating	6,537
Income tax payable	573	1,589
Short-term Debt	2,888	5,498
Current portion of finance leases	596
Current portion of finance leases		119
Total current liabilities	63,527	66,556
Long-term debt, less current portion	263,523	245,966
Deferred income taxes	3,775	7,540
Finance leases, less current portion	8,208
Finance leases, less current portion		61
Build-to-suit liability	0	9,975
Other Liabilities, Noncurrent	2,894	3,334
Pension and postretirement benefit obligations	6,709	6,321
Noncurrent operating lease liabilities	22,760
Commitments and contingencies (Note 9)
Stockholders’ deficit:
Common stock, $0.01 par value—200,000 Class A shares authorized with 3,818 shares issued and 3,650 shares outstanding at December 31, 2019, and 3,803 shares issued and outstanding at December 31, 2018	38	38
Additional paid-in capital	61,461	55,421
Accumulated deficit	(88,741)	(50,472)
Accumulated other comprehensive loss	(13,374)	(14,348)
Treasury stock, at cost — 168 shares at December 31, 2019 and no shares at December 31, 2018	(454)	0
Total stockholders’ deficit	(41,070)	(9,361)
Total liabilities and stockholders’ deficit	$ 330,326	$ 330,392

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable allowance	$ 1,766	$ 1,364
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000	200,000
Common stock, shares issued (in shares)	3,818	3,803
Common stock, shares outstanding (in shares)	3,650	3,803
Treasury stock (in shares)	168	0

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net loss	$ (38,515)	$ (37,145)
Adjustments to reconcile net loss to net cash from (used in) operating activities:
Depreciation	8,759	9,082
Amortization of deferred financing costs and debt discount	11,942	8,160
Noncash interest paid in kind	15,912	13,502
Loss on sale of property, plant & equipment	256	64
Unrealized foreign currency (gain) loss	(771)	580
Deferred income taxes	(5,605)	(7,071)
Noncash rent expense	247
Noncash compensation expense	2,862	2,784
Other, net	0	631
Changes in assets and liabilities:
Accounts receivable	5,143	(6,100)
Inventories	16,286	(7,730)
Prepaid expenses and other current assets	3,963	(2,955)
Other noncurrent assets	(428)	740
Prepaid pension costs	(1,190)	(2,717)
Accounts payable	(1,014)	1,370
Accrued payroll and employee benefits	(3,983)	3,453
Income tax payable and receivable	(1,750)	1,624
Accrued and other current liabilities	(1,397)	(1,120)
Postretirement benefit obligations and other noncurrent liabilities	107	(933)
Net cash from (used in) operating activities	10,824	(23,781)
Investing activities:
Capital expenditures	(4,021)	(5,687)
Proceeds from sale of property, plant and equipment	442	77
Net cash used in investing activities	(3,579)	(5,610)
Financing activities:
Repayments of short-term borrowings, net	(2,461)	(115)
Proceeds from long-term debt including credit facilities	3,500	49,954
Repayments of long-term debt including credit facilities	(9,988)	(21,130)
Principal paid on finance leases	(611)
Payments of debt issue costs	0	(499)
Payments of build-to-suit liability	0	(897)
Net cash (used in) from financing activities	(9,560)	27,313
Effect of exchange rate changes on cash and cash equivalents	80	(358)
Net change in cash and cash equivalents	(2,235)	(2,436)
Cash and cash equivalents—beginning of year	8,668	11,104
Cash and cash equivalents—end of year	$ 6,433	$ 8,668

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Shares	Treasury Shares	Additional Paid-in Capital	(Accumulated Deficit) Retained Earnings	Accumulated Other Comprehensive Loss
Balance (in shares) at Dec. 31, 2017		3,734	0
Beginning Balance at Dec. 31, 2017	$ 33,985	$ 37	$ 0	$ 49,944	$ (13,327)	$ (2,669)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(37,145)				(37,145)
Foreign currency translation adjustments, net of tax	(2,492)					(2,492)
Change in unrecognized pension and postretirement benefit costs	(9,187)					(9,187)
Reclassification to equity of interest paid in kind attributable to conversion option, net of tax effect (Note 5)	3,430			3,430
Share-based compensation	1,816			1,816
Vesting of restricted shares and other (in shares)		69
Vesting of restricted shares and other	232	$ 1		231
Balance (in shares) at Dec. 31, 2018		3,803	0
Ending Balance at Dec. 31, 2018	(9,361)	$ 38	$ 0	55,421	(50,472)	(14,348)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(38,515)				(38,515)
Foreign currency translation adjustments, net of tax	(1,108)					(1,108)
Change in unrecognized pension and postretirement benefit costs	2,082					2,082
Reclassification to equity of interest paid in kind attributable to conversion option, net of tax effect (Note 5)	3,547			3,547
Share-based compensation	1,938			1,938
Vesting of restricted shares and other (in shares)		15	(168)
Vesting of restricted shares and other	101	$ 0	$ (454)	555
Balance (in shares) at Dec. 31, 2019		3,818	168
Ending Balance at Dec. 31, 2019	$ (41,070)	$ 38	$ (454)	$ 61,461	$ (88,741)	$ (13,374)

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statement of Stockholders' Equity [Abstract]
Tax benefit related to change in unrecognized pension and postretirement liability benefit costs	$ 732	$ (3,060)
Reclassification of debt to equity, tax effect	$ 1,086

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	12 Months Ended
Basis of Presentation and Significant Accounting Policies	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Significant Accounting Policies	Basis of Presentation and Significant Accounting Policies Nature of operations — A.M. Castle & Co. and its subsidiaries (the “Company”) is a specialty metals distribution company serving customers on a global basis. The Company has operations in the United States, Canada, Mexico, France, Spain, China and Singapore. The Company provides a broad range of products and value-added processing and supply chain services to a wide array of customers. The Company's customers are principally within the producer durable equipment, aerospace, heavy industrial equipment, industrial goods, construction equipment, and retail sectors of the global economy. Particular focus is placed on the aerospace and defense, power generation, mining, heavy industrial equipment, and general manufacturing industries, as well as general engineering applications. The C ompany’s corporate headquarters is located in Oak Brook, Illinois. The Company has 19 operational service centers located throughout North America (15), Europe (2) and Asia (2). The Company purchases metals from many producers. Purchases are made in large lots and held in distribution centers until sold, usually in smaller quantities and often with value-added processing services performed. Orders are primarily filled with materials shipped from the Company's stock. The materials required to fill the balance of sales are obtained from other sources, such as direct mill shipments to customers or purchases from other distributors. Thousands of customers from a wide array of industries are serviced primarily through the Company’s own sales organization. Basis of presentation — The consolidated financial statements included herein and the notes thereto have been prepared by the Company pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”), and accounting principles generally accepted in the United States of America (“U.S. GAAP”). This report contains consolidated financial statements of the Company as of and for the years ended December 31, 2019 and December 31, 2018. The accompanying consolidated financial statements have been prepared on the basis of the Company continuing as a going concern for a reasonable period of time. The Company's principal source of liquidity is cash flows from operations and borrowings under its asset-based revolving credit facilities. Use of estimates — The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. The principal areas of estimation reflected in the consolidated financial statements are accounts receivable allowances, inventory reserves, the valuation of goodwill and intangible assets, the valuation of deferred income taxes, the fair value of the Company's Convertible Senior Secured Paid-in-Kind ("PIK") Toggle Notes due 2022 (the “Second Lien Notes”) and Revolving B Credit Facility (defined at Note 2 - Debt, in the Notes to the Consolidated Financial Statements), pension and other post-employment benefits, and share-based compensation. Revenue recognition — Revenue from the sale of products is recognized when control of the product has transferred to the customer, which is primarily at the time of shipment to the customer. Revenue recognized other than at the time of shipment represented less than 1% of the Company’s consolidated net sales in both the year ended December 31, 2019 and the year ended December 31, 2018. Customer payment terms are established prior to the time of shipment. Provisions for allowances related to sales discounts and rebates are recorded based on terms of the sale in the period that the sale is recorded. Management utilizes historical information and the current sales trends of the business to estimate such provisions. The provisions related to discounts and rebates due to customers are recorded as a reduction within net sales. Revenue from shipping and handling charges is recorded in net sales. Costs incurred in connection with shipping and handling the Company’s products, which are related to third-party carriers or performed by Company personnel, are included in warehouse, processing and delivery expenses. In the year ended December 31, 2019 and the year ended December 31, 2018, shipping and handling costs included in warehouse, processing and delivery expenses were $23,807 and $26,704, respectively. The Company accounts for shipping and handling activities as fulfillment costs and not a promised good or service. The Company maintains an allowance for doubtful accounts related to the potential inability of customers to make required payments. The allowance for doubtful accounts is maintained at a level considered appropriate based on historical experience and specific identification of customer receivable balances for which collection is unlikely. The provision for doubtful accounts is recorded in sales, general and administrative expense in the Company’s Consolidated Statements of Operations and Comprehensive Loss. Estimates of doubtful accounts are based on historical write-off experience as a percentage of net sales and judgments about the probable effects of economic conditions on certain customers. The Company also maintains an allowance for credit memos for estimated credit memos to be issued against current sales. Estimates of allowance for credit memos are based upon the application of a historical issuance lag period to the average credit memos issued each month. Accounts receivable allowance for doubtful accounts and credit memos activity is presented in the table below: December 31, 2019 2018 Balance, beginning of period $ 1,364 $ 1,586 Add Provision charged to expense (a) 472 379 Recoveries 19 44 Less Charges against allowance (89) (645) Balance, end of period $ 1,766 $ 1,364 (a) Includes the net amount of credit memos reserved and issued. The Company does not incur significant incremental costs when obtaining customer contracts and any costs that are incurred are generally not recoverable from its customers. Substantially all of the Company's customer contracts are for a duration of less than one year and individual customer purchase orders for contractual customers are fulfilled within one year of the purchase order date. The Company recognizes incremental costs of obtaining a contract, if any, as an expense when incurred if the amortization period of the asset would have been one year or less. The Company does not have any costs to obtain a contract that are capitalized. Information regarding the disaggregation of the Company's revenue by geographic region can be found at Note 10 — Segment Reporting. Cost of materials — Cost of materials consists of the costs the Company pays for metals and related inbound and transfer freight charges. It excludes depreciation, which is discussed below. Operating expenses — Operating costs and expenses primarily consist of: • Warehouse, processing and delivery expenses, including occupancy costs, compensation and employee benefits for warehouse personnel, processing, shipping and handling costs; • Sales expenses, including compensation and employee benefits for sales personnel; • General and administrative expenses, including compensation for executive officers and general management, expenses for professional services primarily attributable to accounting and legal advisory services, bad debt expenses, data communication costs, computer hardware and maintenance expenses and occupancy costs for non-warehouse locations; and • Depreciation includes depreciation for all property, plant and equipment. Cash equivalents — Cash equivalents are highly liquid, short-term investments that have an original maturity of 90 days or less. Statement of cash flows — Non-cash investing and financing activities and supplemental disclosures of consolidated cash flow information are as follows: December 31, 2019 2018 Non-cash investing and financing activities: Capital expenditures financed by accounts payable $ 27 $ 115 Reclassification of interest paid in kind to additional 3,547 3,430 Cash paid during the period for: Interest 7,075 5,110 Income taxes 1,647 866 Cash received during the period for: Income tax refunds 952 37 Inventories — Inventories consist primarily of finished goods. All of the Company's operations use the average cost method in determining the cost of inventory. The Company maintains an allowance for excess and obsolete inventory. The excess and obsolete inventory allowance is determined through the specific identification of material, adjusted for expected scrap value to be received, based on previous sales experience. Excess and obsolete inventory allowance activity is presented in the table below: December 31, 2019 2018 Balance, beginning of period $ 3,274 $ 1,680 Adjustments to provision 1,967 3,612 Charges against allowance (1,085) (2,018) Balance, end of period $ 4,156 $ 3,274 Property, plant and equipment — Property, plant and equipment are stated at cost and include assets held under capital leases. Expenditures for major additions and improvements are capitalized, while maintenance and repair costs that do not substantially improve or extend the useful lives of the respective assets are expensed in the period in which they are incurred. When items are disposed, the related costs and accumulated depreciation are removed from the accounts and any gain or loss is reflected in income. The Company provides for depreciation of plant and equipment sufficient to amortize the cost over their estimated useful lives as follows: Buildings and building improvements 5 – 40 years Plant equipment 5 – 20 years Furniture and fixtures 2 – 10 years Vehicles and office equipment 3 – 10 years Leasehold improvements are depreciated over the shorter of their useful lives or the remaining term of the lease. Depreciation is calculated using the straight-line method. Depreciation expense in the year ended December 31, 2019 and the year ended December 31, 2018 was $8,759 and $9,082, respectively. Long-lived assets — The Company’s long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset or asset group to future net cash flows (undiscounted and without interest charges) expected to be generated by the asset or asset group. If future net cash flows are less than the carrying value, the asset or asset group may be impaired. If such assets are impaired, the impairment charge is calculated as the amount by which the carrying amount of the assets exceeds the fair value of the assets. Determining whether impairment has occurred typically requires various estimates and assumptions, including determining which undiscounted cash flows are directly related to the potentially impaired asset, the useful life over which cash flows will occur, their amount, and the asset’s residual value, if any. The Company derives the required undiscounted cash flow estimates from historical experience and internal business plans. Goodwill and intangible assets — As of both December 31, 2019 and December 31, 2018, the Company had recorded goodwill with a carrying value of $2,676, none of which is tax deductible. There was no change in the carrying value of goodwill recognized in the year ended December 31, 2019. The Company's other intangible asset is comprised of an indefinite-lived trade name, which is not subject to amortization. The gross carrying value of the trade name intangible asset was $5,500 at both December 31, 2019 and December 31, 2018. The Company tests goodwill for impairment at the reporting unit level on an annual basis at December 1 of each year or more frequently if a significant event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. The Company assesses, at least quarterly, whether any events or circumstances have significantly changed which may imply that the carrying amount of its one reporting unit's goodwill is in excess of its fair value. Based on the results of the Company's goodwill impairment testing it has recorded no impairment charges in the year ended December 31, 2019 or since the goodwill was originally recognized. The Company currently has one reporting unit. The determination of the fair value of the reporting unit requires significant estimates and assumptions to be made by management. The fair value of the reporting unit is estimated using a combination of an income approach, which estimates fair value based on a discounted cash flow analysis using historical data, estimates of future cash flows and discount rates based on the view of a market participant, and a market approach, which estimates fair value using market multiples of various financial measures of comparable public companies. In selecting the appropriate assumptions, the Company considers the following: the selection of appropriate peer group companies; control premiums appropriate for acquisitions in the industry in which the Company competes; discount rates; terminal growth rates; long-term projections of future financial performance; and relative weighting of income and market approaches. The long-term projections used in the valuation are developed as part of the Company’s annual long-term planning process. The discount rates used to determine the fair values of the reporting unit is that of a hypothetical market participant which are developed based upon an analysis of comparable companies and include adjustments made to account for any individual reporting unit specific attributes such as, size and industry. The Company's intangible asset is comprised of an indefinite-lived trade name, which is not subject to amortization. The indefinite-lived trade name intangible asset is tested for impairment on an annual basis on December 1 of each year or more frequently if significant events or changes in circumstances occur which may indicate that the carrying amount of the asset may not be recoverable, as measured by comparing carrying value to the estimated future cash flows generated by its use. An impaired asset is recorded at estimated fair value, determined principally using an income-based approach similar to the relief from royalty method used in the initial valuation of the indefinite-lived intangible asset, with the excess amount of carrying value over the fair value representing the amount of the impairment. Assumptions used in the income-based approach including projected revenues and assumed royalty rate, long-term growth and discount rates. The Company recorded no impairment charges related to its indefinite-lived trade name intangible assets in the year ended December 31, 2019 or since the intangible asset was originally recorded. Income taxes — The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statement and the tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. The Company records valuation allowances against its deferred tax assets when it is more likely than not that the amounts will not be realized. In making such a determination, the Company considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies and recent results of operations. In the event the Company determines it would not be able to realize its deferred tax assets, a valuation allowance is recorded, which increases the provision for income taxes in the period in which that determination is made. During 2019, the Company's foreign assets remained pledged as collateral for certain borrowings. This continues to result in a taxable income inclusion in the U.S. of the annual earnings generated by its foreign subsidiaries. As a result of the enactment of H.R.1, “An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018” (the “Tax Act”) (also known as “The Tax Cuts and Jobs Act”) and this pledge of foreign assets, there are no remaining undistributed earnings which have not been subject to U.S. income taxation as of December 31, 2019 on which the Company would need to record any additional U.S. deferred tax liability. For uncertain tax positions, if any, the Company applies the provisions of relevant authoritative guidance, which requires application of a “more likely than not” threshold to the recognition and derecognition of tax positions. The Company’s ongoing assessments of the more likely than not outcomes of tax authority examinations and related tax positions require significant judgment and can increase or decrease the Company’s effective tax rate as well as impact operating results. As of December 31, 2019, the Company has no uncertain tax positions for which a tax or interest reserve has been recognized. The Company recognizes interest and penalties related to unrecognized tax benefits, if any, within income tax expense. Accrued interest and penalties are included within income tax payable in the Consolidated Balance Sheets. As of December 31, 2019, the Company has accrued no interest and penalties associated with unrecognized tax benefits. Insurance plans — The Company is a member of a group captive insurance company (the “Captive”) domiciled in Grand Cayman Island. The Captive reinsures losses related to certain of the Company’s workers’ compensation, automobile and general liability risks that occur subsequent to August 2009. Premiums are based on the Company’s loss experience and are accrued as expenses for the period to which the premium relates. Premiums are credited to the Company’s “loss fund” and earn investment income until claims are actually paid. For claims that were incurred prior to August 2009, the Company is self-insured. Self-insurance amounts are capped, for individual claims and in the aggregate, for each policy year by an insurance company. Self-insurance reserves are based on unpaid, known claims (including related administrative fees assessed by the insurance company for claims processing) and a reserve for incurred but not reported claims based on the Company’s historical claims experience and development. The Company is self-insured up to a retention amount for medical insurance for its domestic operations. Self-insurance reserves are maintained based on incurred but not paid claims based on a historical lag. Foreign currency — For the majority of the Company’s operations, the functional currency is the local currency. Assets and liabilities of those operations are translated into U.S. dollars using year-end exchange rates, and income and expenses are translated using the average exchange rates for the reporting period. The currency effects of translating financial statements of the Company’s non-U.S. operations which operate in local currency environments are recorded in accumulated other comprehensive loss, a separate component of stockholders’ deficit. Transaction gains or losses resulting from foreign currency transactions have historically been primarily related to unhedged intercompany financing arrangements between the United States and Canada. Loss per share — Diluted loss per share is computed by dividing net loss by the weighted average number of shares of common stock plus outstanding common stock equivalents. Common stock equivalents consist of restricted stock awards and contingently issuable shares related to the Company’s Second Lien Notes, which are included in the calculation of weighted average shares outstanding using the if-converted method. Refer to Note 2 - Debt , for further description of the Second Lien Notes. The following table is a reconciliation of the basic and diluted loss per common share calculations: December 31, 2019 2018 Numerator: Net loss $ (38,515) $ (37,145) Denominator: Weighted average common shares outstanding 2,186 2,000 Effect of dilutive securities: Outstanding common stock equivalents — — Denominator for diluted loss per share 2,186 2,000 Net basic loss per common share $ (17.62) $ (18.57) Net diluted loss per common share $ (17.62) $ (18.57) Excluded outstanding share-based awards having an anti-dilutive effect 1,429 1,803 The computation of diluted loss per common share does not include common shares issuable upon conversion of the Company’s outstanding Second Lien Notes, as they were anti-dilutive under the if-converted method. The Second Lien Notes are convertible into shares of the Company's common stock at any time at the initial conversion price of $3.77 per share. In future periods, absent a fundamental change (as defined in the Second Lien Notes Indenture, which is described in Note 2 - Debt), the outstanding Second Lien Notes could increase diluted average shares outstanding by a maximum of approximately 51,400 shares. Concentrations — The Company’s customer base is w ell diversified and, therefore, the Company does not have dependence upon any single customer or a few customers. No single customer represented more than 5% of the Company’s total net sales in either the year ended December 31, 2019 or the year ended December 31, 2018. Approximately 64% of the Company’s net sales in the year ended December 31, 2019, and 65% in the year ended December 31, 2018, were from locations in the United States. Share-based compensation — Compensation expense related to restricted share awards made to directors, officers and employees of the Company is recognized on a straight-line basis over the vesting period based on the estimated grant date fair value of the award. The Company accounts for forfeitures as they occur. Compensation expense related to performance share unit awards made to senior level managers and other select personnel is based on management’s expectation of future performance compared to the pre-established performance goals. If the performance goals are not expected to be met, no compensation expense is recognized and any previously recognized compensation expense is reversed. New Accounting Standards Recently Adopted Accounting Standards In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2016-02, "Leases (Topic 842)", which requires that lessees recognize assets and liabilities for leases with lease terms greater than 12 months in the statement of financial position. ASU No. 2016-02 also requires additional disclosures to help users of financial statements better understand the amount, timing and uncertainty of cash flows arising from leases. The provisions of ASU No. 2016-02 are to be applied using a modified retrospective approach, and are effective for fiscal years beginning after December 15, 2018, including interim reporting periods within that reporting period. Topic 842 was subsequently amended by ASU No. 2018-01, “Land Easement Practical Expedient for Transition to Topic 842”; ASU No. 2018-10, “Codification Improvements to Topic 842, Leases”; ASU No. 2018-11, “Leases (Topic 842): Targeted Improvements” (“ASU 2018-11”); and ASU No. 2018-20, “Narrow-Scope Improvements for Lessors” (collectively, "ASC 842"). ASU 2018-11 provides clarity on separating components of a lease contract and includes an option to not restate comparative periods in transition and elect to use the effective date of Topic 842 as the date of initial application. The Company adopted ASC 842 effective January 1, 2019 using the modified retrospective approach, as required. The Company elected the transition method that allows it to apply the new standard only to leases existing at the date of initial application, January 1, 2019, and recognized the cumulative effect of initially applying the standard as an adjustment to opening retained earnings for the fiscal year beginning January 1, 2019. Consequently, financial information has not been updated and the disclosures required under the new standard have not be provided for dates and periods before January 1, 2019. The Company has also elected the package of practical expedients permitted under the transition guidance, which among other things, allows the Company to carryforward the historical lease classification. ASC 842 also provides practical expedients for an entity’s ongoing accounting. The Company has made an accounting policy election to keep leases with an initial term of 12 months or less off the balance sheet and recognize those lease payments in the Consolidated Statements of Operations and Comprehensive Loss on a straight-line basis over the lease term. The Company has also elected the practical expedient to not separate lease and non-lease components for all of its real estate leases. The adoption of ASC 842 resulted in recognition of additional operating right of use assets and lease liabilities on the Company's Consolidated Balance Sheets as of January 1, 2019 of $35,508 and $35,470, respectively. Additionally, the Company’s build-to-suit financing obligation has been classified as a finance lease liability, resulting in a $246 adjustment to the Company’s beginning accumulated deficit. The adoption of Topic 842 did not have a material effect on the Company's consolidated net loss or liquidity. The Company has reclassified certain prior year presentations to conform to the current period presentation under ASC 842. Refer to Note 4 - Leases, for further information and disclosures related to the adoption of ASC 842. Recently Issued Account Standards Not Yet Effective In June 2016, the FASB issued ASU No. 2016-13, “Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 adds a current expected credit loss (“CECL”) impairment model to U.S. GAAP that is based on expected losses rather than incurred losses. Modified retrospective adoption is required with any cumulative-effect adjustment recorded to retained earnings as of the beginning of the period of adoption. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within the year of adoption. The Company does not expect the application of the CECL impairment model to have a significant impact on the Company's allowance for uncollectible amounts for accounts receivable. The Company will adopt the disclosure requirements of ASU No. 2016-13 in fiscal year 2020. In August 2018, the FASB issued ASU No. 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement.” ASU No. 2018-13 amends Fair Value Measurement (Topic 820) to add, remove, and modify fair value measurement disclosure requirements. The ASU’s changes to disclosures aim to improve the effectiveness of Topic 820's disclosure requirements under the aforementioned FASB disclosure framework project. ASU No. 2018-13 is effective for all entities for fiscal years beginning after December 15, 2019, including interim periods within the year of adoption. Early adoption is permitted for any eliminated or modified disclosures prescribed by the ASU. The Company will adopt the disclosure requirements of ASU No. 2018-13 in its Quarterly Report on Form 10-Q for the three-months ended March 31, 2020 and the Company expects it will have no impact on its fair value disclosures therein. Also in August 2018, the FASB issued ASU No. 2018-14, “Compensation – Retirement Benefits – Defined Benefit Plans - General (Topic 715-20): Disclosure Framework – Changes to the Disclosure Requirements for Defined Benefit Plan.” ASU No. 2018-14 amends Compensation - Retirement Benefits (Topic 715) to add or remove certain disclosure requirements related to defined benefit pension and other postretirement plans. The ASU’s changes to disclosures aim to improve the effectiveness of Topic 715's disclosure requirements under the FASB’s disclosure framework project. ASU No. 2018-14 is effective for public entities for fiscal years beginning after December 15, 2020. ASU No. 2018-14 does not impact the interim disclosure requirements of Topic 715. Early adoption is permitted. The Company will adopt the disclosure requirements of this new guidance in fiscal year 2021.

Debt

Debt	12 Months Ended
Debt	Dec. 31, 2019
Debt Disclosure [Abstract]
Debt	Debt Long-term debt consisted of the following: December 31, 2019 2018 LONG-TERM DEBT 5.00% / 7.00% Second Lien Notes due August 31, 2022 (a) 193,660 180,894 Floating rate Revolving A Credit Facility due February 28, 2022 102,000 108,488 12.00% Revolving B Credit Facility due February 28, 2022 (b) 25,788 22,875 Less: unvested restricted Second Lien Notes (c) (323) (1,378) Less: unamortized discount (57,313) (64,491) Less: unamortized debt issuance costs (289) (422) Total long-term debt $ 263,523 $ 245,966 Less: current portion of long-term debt — — Total long-term portion $ 263,523 $ 245,966 (a) Included in balance is interest paid in kind of $28,991 as of December 31, 2019 and $15,992 as of December 31, 2018. (b) Included in balance is interest paid in kind of $4,288 as of December 31, 2019 and $1,375 as of December 31, 2018. (c) Represents unvested portion of restricted Second Lien Notes issued to certain members of management (see Note 6 - Share-based compensation ). Credit Facilities On August 31, 2017, the Company entered into the Revolving Credit and Security Agreement with PNC Bank, National Association ("PNC") as lender and as administrative and collateral agent (the “Agent”), and other lenders party thereto (the "Original ABL Credit Agreement"). The Original ABL Credit Agreement provided for a $125,000 senior secured, revolving credit facility under which the Company and four of its subsidiaries each are borrowers (collectively, in such capacity, the “Borrowers”). The obligations of the Borrowers have been guaranteed by the subsidiaries of the Company named therein as guarantors On June 1, 2018, the Company entered into an Amendment No. 1 to the Original ABL Credit Agreement (the “Credit Agreement Amendment”) by and among the Company, the Borrowers and guarantors party thereto and the Agent and the other lenders party thereto, which amended the Original ABL Credit Agreement (as amended by the Credit Agreement Amendment, the “ABL Credit Agreement”) to provide for additional borrowing capacity. The ABL Credit Agreement provides for an additional $25,000 last out Revolving B Credit Facility (the "Revolving B Credit Facility" and together with the Revolving A Credit Facility, the "Credit Facility"). The Credit Facility was made available in part by way of a participation in the Revolving B Credit Facility by certain of the Company’s shareholders. Borrowings under the Credit Facility will mature on February 28, 2022. Subject to certain exceptions and permitted encumbrances, the obligations under the ABL Credit Agreement are secured by a first priority security interest in substantially all of the assets of each of the Borrowers and certain subsidiaries of the Company that are named as guarantors. The proceeds of the advances under the ABL Credit Agreement may only be used to (i) pay certain fees and expenses to the Agent and the lenders under the ABL Credit Agreement, (ii) provide for the Borrowers' working capital needs and reimburse drawings under letters of credit, (iii) repay the obligations under the Debtor-in-Possession Revolving Credit and Security Agreement dated as of July 10, 2017, by and among the Company, the lenders party thereto, and PNC, and certain other existing indebtedness, and (iv) provide for the Borrowers' capital expenditure needs, in accordance with the ABL Credit Agreement. The Company may prepay its obligations under the ABL Credit Agreement at any time without premium or penalty, and must apply the net proceeds of material sales of collateral in prepayment of such obligations. Payments made must be applied to the Company's obligations under the Revolving A Credit Facility, if any, prior to its obligations under the Revolving B Credit Facility. In connection with an early termination or permanent reduction of the Revolving A Credit Facility prior to June 1, 2020, a 0.25% fee shall be due for the period from June 1, 2019 through May 31, 2020 on the amount of such commitment reduction, subject to reduction as set forth in the ABL Credit Agreement. Indebtedness for borrowings under the ABL Credit Agreement is subject to acceleration upon the occurrence of specified defaults or events of default, including (i) failure to pay principal or interest, (ii) the inaccuracy of any representation or warranty of a loan party, (iii) failure by a loan party to perform certain covenants, (iv) defaults under indebtedness owed to third parties, (v) certain liability producing events relating to ERISA, (vi) the invalidity or impairment of the Agent’s lien on its collateral or of any applicable guarantee, and (vii) certain adverse bankruptcy-related and other events. Interest on indebtedness under the Revolving A Credit Facility accrues at a variable rate based on a grid with the highest interest rate being the applicable LIBOR-based rate plus a margin of 3.0%, as set forth in the ABL Credit Agreement. Interest on indebtedness under the Revolving B Credit Facility accrues at a rate of 12.0% per annum, which will be paid in kind unless the Company elects to pay such interest in cash and the Revolving B payment conditions specified in the ABL Credit Agreement are satisfied. Additionally, the Company must pay a monthly Facility Fee equal to the product of (i) 0.25% per annum (or, if the average daily revolving facility usage is less than 50% of the maximum revolving advance amount, 0.375% per annum) multiplied by (ii) the amount by which the maximum revolving advance amount exceeds such average daily revolving facility usage for such month. The weighted average interest rate on outstanding borrowings under the Revolving A Credit Facility for the year ended December 31, 2019 was 5.32% and the weighted average facility fee for the year was 0.25%. The Company pays certain customary recurring fees with respect to the ABL Credit Agreement. Interest expense related to the Revolving B Credit Facility of $2,913 and $1,375 was paid in kind in the years ended December 31, 2019 and December 31, 2018, respectively. The ABL Credit Agreement includes negative covenants customary for an asset-based revolving loan. Such covenants include limitations on the ability of the Borrowers to, among other things, (i) effect mergers and consolidations, (ii) sell assets, (iii) create or suffer to exist any lien, (iv) make certain investments, (v) incur debt and (vi) transact with affiliates. In addition, the ABL Credit Agreement includes customary affirmative covenants for an asset-based revolving loan, including covenants regarding the delivery of financial statements, reports and notices to the Agent. The ABL Credit Agreement also contains customary representations and warranties and event of default provisions for a secured term loan. The Company's ABL Credit Agreement contains a springing financial maintenance covenant requiring the Company to maintain a Fixed Charge Coverage Ratio of 1.0 to 1.0 in any Covenant Testing Period (as defined in the ABL Credit Agreement) when the Company's cash liquidity (as defined in the ABL Credit Agreement) is less than $12,500. The Company is not in a Covenant Testing Period as of December 31, 2019. Unamortized debt issuance costs of $289 associated with the ABL Credit Agreement were recorded as a reduction in long-term debt as of December 31, 2019. Second Lien Notes Also on August 31, 2017, the Company entered into an indenture (the “Second Lien Notes Indenture”) with Wilmington Savings Fund Society, FSB, as trustee and collateral agent (“Indenture Agent”) and, pursuant thereto, issued approximately $164,902 in aggregate original principal amount of its Second Lien Notes, including $2,400 of restricted Second Lien Notes issued to certain members of management (see Note 6 - Share-based compensation ). The Second Lien Notes are five Under the Second Lien Notes Indenture, upon the conversion of the Second Lien Notes in connection with a “Fundamental Change” (as defined in the Second Lien Notes Indenture), for each $1.00 principal amount of the Second Lien Notes, that number of shares of the Company’s common stock issuable upon conversion shall equal the greater of (a) $1.00 divided by the then applicable conversion price or (b) $1.00 divided by the price paid per share of the Company's common stock in connection with such Fundamental Change calculated in accordance with the Second Lien Notes Indenture, subject to other provisions of the Second Lien Notes Indenture. Subject to certain exceptions, under the Second Lien Notes Indenture a “Fundamental Change” includes, but is not limited to, the following: (i) the acquisition of more than 50% of the voting power of the Company’s common equity by a “person” or “group” within the meaning of Section 13(d) of the Securities Exchange Act of 1934, as amended; (ii) the consummation of any recapitalization, reclassification, share exchange, consolidation or merger of the Company pursuant to which the Company’s common stock will be converted into cash, securities or other property; (iii) the “Continuing Directors” (as defined in the Second Lien Notes Indenture) cease to constitute at least a majority of the board of directors; and (iv) the approval of any plan or proposal for the liquidation or dissolution of the Company by the Company’s stockholders. Upon conversion, the Company will pay and/or deliver, as the case may be, cash, shares of the Company’s common stock or a combination of cash and shares of the Company’s common stock, at the Company’s election, together with cash in lieu of fractional shares. The value of shares of the Company’s common stock for purposes of the settlement of the conversion right, if the Company elects to settle in cash, will be calculated as provided in the Second Lien Notes Indenture, using a 20 trading day observation period. The Second Lien Notes are guaranteed, jointly and severally, by certain subsidiaries of the Company. The Second Lien Notes and the related guarantees are secured by a lien on substantially all of the Company’s and the guarantors’ assets, subject to certain exceptions pursuant to certain collateral documents entered by the Company and the guarantors in connection with Second Lien Notes Indenture. The terms of the Second Lien Notes contain numerous covenants imposing financial and operating restrictions on the Company’s business. These covenants place restrictions on the Company’s ability and the ability of its subsidiaries to, among other things, pay dividends, redeem stock or make other distributions or restricted payments; incur indebtedness or issue certain stock; make certain investments; create liens; agree to certain payment restrictions affecting certain subsidiaries; sell or otherwise transfer or dispose assets; enter into transactions with affiliates; and enter into sale and leaseback transactions. The Second Lien Notes may not be redeemed by the Company in whole or in part at any time, except the Company may be required to make an offer to purchase Second Lien Notes using the proceeds of certain material asset sales involving the Company or one of its restricted subsidiaries, as described more particularly in the Second Lien Notes Indenture. In addition, if a Fundamental Change occurs at any time, each holder of any Second Lien Notes has the right to require the Company to repurchase such holder’s Second Lien Notes for cash at a repurchase price equal to 100% of the principal amount thereof, together with accrued and unpaid interest thereon, subject to certain exceptions. The Company must use the excess proceeds of material sales of collateral to make an offer of repurchase to holders of the Second Lien Notes. Indebtedness for borrowings under the Second Lien Notes Indenture is subject to acceleration upon the occurrence of specified defaults or events of default, including failure to pay principal or interest, the inaccuracy of any representation or warranty of any obligor under the Second Lien Notes, failure by an obligor under the Second Lien Notes to perform certain covenants, the invalidity or impairment of the Indenture Agent’s lien on its collateral or of any applicable guarantee, and certain adverse bankruptcy-related and other events. Indebtedness for borrowings under the Second Lien Notes Indenture is subject to acceleration upon the occurrence of specified defaults or events of default, including failure to pay principal or interest, the inaccuracy of any representation or warranty of any obligor under the Second Lien Notes, failure by an obligor under the Second Lien Notes to perform certain covenants, the invalidity or impairment of the Indenture Agent’s lien on its collateral or of any applicable guarantee, and certain adverse bankruptcy-related and other events. Interest on the Second Lien Notes accrues at the rate of 5.00% if paid in cash and 7.00% if paid in kind. Pursuant to the terms of the Second Lien Notes Indenture, the Company is currently paying interest on the Second Lien Notes in kind. Interest expense of $12,999 and $12,127 was paid in kind for the years ended December 31, 2019 and December 31, 2018, respectively. Upon satisfaction of certain conditions more particularly described in the Second Lien Notes Indenture, including the deposit in trust of cash or securities sufficient to pay the principal of and interest and any premium on the Second Lien Notes, the Company may effect a covenant defeasance of certain of the covenants imposing financial and operating restrictions on the Company’s business. In addition, and subject to certain exceptions as more particularly described in the Second Lien Notes Indenture, the Company may amend, supplement or waive provisions of the Second Lien Notes Indenture with the consent of holders representing a majority in aggregate principal amount of the Second Lien Notes, and may in effect release collateral from the liens securing the Second Lien Notes with the consent of holders representing 66-2/3% in aggregate principal amount of the Second Lien Notes. As of December 31, 2019, all of the Company's principal and interest paid in kind related to its long-term debt matures and is payable in fiscal year 2022. The Company has no other required long-term debt payments within the next five years or thereafter. Short-term borrowings The Company's French subsidiary is party to a local credit facility under which it may borrow against 100% of the eligible accounts receivable factored, with recourse, up to €6,500. The French subsidiary is charged a factoring fee of 0.16% of the gross amount of accounts receivable factored. Local currency borrowings on the French subsidiary's credit facility are charged interest at the daily 3-months Euribor rate plus a 1.0% margin and U.S dollar borrowings on the credit facility are 3-months LIBOR plus a 1.0% margin. The French subsidiary utilizes the local credit facility to support its operating cash needs. As of December 31, 2019 and December 31, 2018, the French subsidiary has borrowings of $2,888 and $5,498 under the local credit facility, respectively.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
Fair Value Measurements	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The three-tier value hierarchy the Company utilizes, which prioritizes the inputs used in the valuation methodologies, is: Level 1 —Valuations based on quoted prices for identical assets and liabilities in active markets. Level 2 —Valuations based on observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data. Level 3 —Valuations based on unobservable inputs reflecting our own assumptions, consistent with reasonably available assumptions made by other market participants. The fair value of cash, accounts receivable and accounts payable approximate their carrying values. The fair value of cash equivalents is determined using the fair value hierarchy described above. The Company’s pension plan asset portfolio as of December 31, 2019 and December 31, 2018 is primarily invested in fixed income securities, which generally fall within Level 2 of the fair value hierarchy. Fixed income securities in the pension plan asset portfolio are valued based on evaluated prices provided to the trustee by independent pricing services. Such prices may be determined by factors which include, but are not limited to, market quotations, yields, maturities, call features, ratings, institutional size trading in similar groups of securities and developments related to specific securities. Refer to Note 7 - Employee Benefit Plans for pension fair value disclosures. Fair Value Measurements of Debt As of December 31, 2019, the fair value of the Company's Second Lien Notes, including the conversion option, was estimated to be $136,085 compared to a carrying value of $193,660. As of December 31, 2018, the fair value of the Company's Second Lien Notes, including the conversion option, was estimated to be $174,063 compared to a carrying value of $180,894.The fair values for the Second Lien Notes, including the conversion option, falls within Level 3 of the fair value hierarchy and was determined using a binomial lattice model using assumptions based on market information and historical data, and a review of prices and terms available for similar debt instruments that do not contain a conversion feature, as well as other factors related to the callable nature of the Second Lien Notes. The main inputs and assumptions into the fair value model for the Second Lien Notes at December 31, 2019 were as follows: Risk-free interest rate 1.61 % Credit spreads 22.86 % PIK premium spread 2.00 % Volatility 50.00 % As of December 31, 2019, the fair value of the Company's Revolving B Credit Facility was estimated to be $25,082 compared to a carrying value of $25,788. As of December 31, 2018, the fair value of the Company's Revolving B Credit Facility was estimated to be $22,124 compared to a carrying value of $22,875. The fair value of the Revolving B Credit Facility was estimated based on a model that discounted future principal and interest payments at interest rates available to the Company at the end of the period for similar debt of the same maturity, which is a Level 2 input as defined by the fair value hierarchy.

Lease Agreements

Lease Agreements	12 Months Ended
Lease Agreements	Dec. 31, 2019
Leases [Abstract]
Lease Agreements	Lease Agreements The Company adopted ASC 842 effective January 1, 2019 using the modified retrospective approach. Refer to Note - 1 Basis of Presentation and Significant Accounting Policies for additional information regarding the adoption of ASC 842. The Company has operating and finance leases covering primarily warehouse and office facilities and equipment, with the lapse of time as the basis for all rental payments. The Company determines if an arrangement is a lease at inception. Operating right-of-use ("ROU") assets represent the Company's right to use an underlying asset for the lease term and lease liabilities represent the Company's obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the estimated present value of lease payments over the lease term. In determining the estimated present value of lease payments, the Company uses its incremental borrowing rate based on the information available at the lease commencement date, with consideration given to the Company's recent debt issuances as well as publicly available data for instruments with similar characteristics when calculating the Company's incremental borrowing rates. The ROU assets also include any lease payments made and are reduced by any lease incentives received. The Company’s lease terms may include options to extend or not terminate the lease when it is reasonably certain that it will exercise any such options. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Lease expense is recognized in operating loss on a straight-line basis over the expected lease term. Real estate leases of warehouse and office facilities are the most significant leases held by the Company. For these leases, the Company has elected the practical expedient permitted under ASC 842 to account for the lease and non-lease components as a single lease component. As a result, non-lease components, such as common area maintenance charges, are accounted for as a single lease element. The Company’s remaining operating leases are primarily comprised of leases of copiers, vehicles, and other warehouse equipment. Certain of the Company’s operating lease agreements include variable payments that are passed through by the landlord, such as insurance, taxes, and common area maintenance, payments based on the usage of the asset, and rental payments adjusted periodically for inflation. Pass-through charges, payments due to changes in usage of the asset, and payments due to changes in indexation are included within variable rent expense. As a result of the adoption of ASC 842, the Company's build-to-suit liability recognized under the previous guidance was reclassified to a finance leases liability in the Consolidated Balance Sheet and is presented as such as of December 31, 2019. None of the Company's lease agreements contain significant residual value guarantees, restrictions, or covenants. Lease-related assets and liabilities consisted of the following: Classification on the Balance Sheet December 31, 2019 ASSETS Operating lease assets Operating right-of-use assets $ 29,423 Finance lease assets Property, plant and equipment, net 10,293 Total lease assets $ 39,716 LIABILITIES Current Operating Operating lease liabilities $ 6,537 Finance Current portion of finance leases 596 Noncurrent Operating Noncurrent operating lease liabilities 22,760 Finance Finance leases, less current portion 8,208 Total liabilities $ 38,101 Weighted average remaining lease term (years) Operating leases 5.5 Finance leases 10.9 Weighted average discount rate Operating leases 5.2 % Finance leases 4.7 % Lease-related expenses were as follows: Year Ended December 31, 2019 Finance lease expense: Amortization of finance lease assets $ 1,046 Interest on finance lease liabilities 424 Operating lease expense 8,551 Variable lease expense 612 Short-term lease expense 34 Sublease income (1) (744) Total lease expense $ 9,923 (1) Relates primarily to one property subleased through September 2020. Lease-related supplemental cash flow information was as follows: Year Ended December 31, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases (8,633) Operating cash for finance leases (424) Financing cash flows for finance leases (611) Lease obligations obtained in exchange for right-of-use assets: Operating leases 1,713 Maturities of lease liabilities as of December 31, 2019 are as follows: Year ending December 31: Finance Leases Operating Leases 2020 $ 991 $ 7,716 2021 955 7,042 2022 975 6,010 2023 992 4,860 2024 1,012 2,176 Later years 6,365 5,866 Total lease payments 11,290 33,670 Less: imputed interest (2,486) (4,373) Total lease obligations $ 8,804 $ 29,297 Comparable future minimum rental payments under leases that have initial or remaining non-cancelable lease terms in excess of one year as previously disclosed under Account Standards Codification No. 840, (Leases) ("ASC 840") as of December 31, 2018 are as follows: Finance Leases Operating Leases Built-to-Suit Lease 2019 $ 119 $ 7,882 $ 915 2020 56 7,398 933 2021 2 6,414 952 2022 2 5,702 971 2023 1 4,828 990 Later years — 8,068 7,461 Total future minimum rental payments $ 180 $ 40,292 $ 12,222

Stockholders' Equity

Stockholders' Equity	12 Months Ended
Stockholders' Equity	Dec. 31, 2019
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Stockholders' Equity Reclassification of interest paid in kind to additional paid in capital The Company has classified the fair value of the conversion option associated with its Second Lien Notes as additional paid-in capital. Similarly, the interest paid-in kind attributable to the fair value conversion option of the Second Lien Notes is classified as additional paid-in capital. Interest paid-in kind attributable to the fair value of the conversion option recognized as additional paid-in capital was $3,547 in the year ended December 31, 2019, net of the tax impact of $1,086, and $3,430, net of the tax impact of $1,208, in the year ended December 31, 2018. Accumulated Comprehensive Loss The components of accumulated other comprehensive loss are as follows: December 31, 2019 2018 Unrecognized pension and postretirement costs, net of tax $ (7,071) $ (9,153) Foreign currency translation losses, net of tax (6,303) (5,195) Total accumulated other comprehensive loss, net of tax $ (13,374) $ (14,348) Changes in accumulated other comprehensive (loss) income by component are as follows: Defined Benefit Pension and Postretirement Items Foreign Currency Items Total Year Ended December 31, Year Ended December 31, Year Ended December 31, 2019 2018 2019 2018 2019 2018 Beginning Balance $ (9,153) $ 34 $ (5,195) $ (2,703) $ (14,348) $ (2,669) Other comprehensive income (loss) before reclassifications, net of tax 1,990 (9,187) (1,108) (2,492) 882 (11,679) Amounts reclassified from accumulated other comprehensive loss, net of tax (a) 92 — — — 92 — Net current period other comprehensive income (loss) 2,082 (9,187) (1,108) (2,492) 974 (11,679) Ending Balance $ (7,071) $ (9,153) $ (6,303) $ (5,195) $ (13,374) $ (14,348) (a) See reclassifications from accumulated other comprehensive loss table below for details of reclassification from accumulated other comprehensive loss for the years ended December 31, 2019 and December 31, 2018 . Reclassifications from accumulated other comprehensive loss are as follows: December 31, 2019 2018 Unrecognized pension and postretirement benefit items: Prior service credit $ (2) $ — Actuarial loss 94 — Total before tax 92 — Tax effect — — Total reclassifications for the period, net of tax (a) $ 92 $ — (a) The total reclassifications for the period are included in other income, net.

Share-based Compensation

Share-based Compensation	12 Months Ended
Share-based Compensation	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Share-based Compensation	Share-based Compensation Provisions governing the Company's share-based compensation awards are included in the A.M. Castle & Co. 2017 Management Incentive Plan (the “MIP”), which became effective on August 31, 2017. The Board of Directors (the "Board") or a committee thereof (either, in such capacity, the “Administrator”) administers the MIP. The Administrator has broad authority under the MIP, among other things, to: (i) select participants; (ii) determine the terms and conditions, not inconsistent with the MIP, of any award granted under the MIP; (iii) determine the number of shares of the Company’s common stock to be covered by each award granted under the MIP; and (iv) determine the fair market value of awards granted under the MIP. Persons eligible to receive awards under the MIP include officers, directors and employees of the Company and its subsidiaries. The types of awards that may be granted under the MIP include Second Lien Notes, stock options, stock appreciation rights, restricted stock, restricted stock units, performance units, performance shares and other forms of cash or share-based awards. The maximum number of shares of the Company’s common stock that may be issued or transferred pursuant to awards under the MIP (including shares initially convertible as a result of conversion of Second Lien Notes issued pursuant to the MIP) is 3,952, which number may be increased with the approval of the Company’s shareholders. If any outstanding award granted under the MIP expires or is terminated or canceled without having been exercised or settled in full, or if shares of the Company's common stock acquired pursuant to an award subject to forfeiture are forfeited, the shares of the Company’s common stock allocable to the terminated portion of such award or such forfeited shares will revert to the MIP and will be available for grant under the MIP as determined by the Administrator, subject to certain restrictions. As is customary in management incentive plans of this nature, in the event of any change in the outstanding shares of the Company’s common stock by reason of a stock split, stock dividend or other non-recurring dividends or distributions, recapitalization, merger, consolidation, spin-off, combination, repurchase or exchange of stock, reorganization, liquidation, dissolution or other similar corporate transaction, an equitable adjustment will be made in order to prevent dilution or enlargement of the benefits or potential benefits intended to be made available under the MIP. Such adjustment may include an adjustment to the maximum number and kind of shares of stock or other securities or other equity interests as to which awards may be granted under the MIP, the number and kind of shares of stock or other securities or other equity interests subject to outstanding awards and the exercise price thereof, if applicable. Restricted Shares The Board has issued restricted shares of the Company's common stock ("Restricted Shares") and restricted Second Lien Notes (the "Restricted Notes") to certain officers of the Company, as well as Restricted Shares to certain members of the Board. The aggregate principal amount of Restricted Notes outstanding as of December 31, 2019 was $2,300. The Restricted Notes outstanding were convertible into an additional 610 shares of the Company's common stock as of December 31, 2019. The Restricted Shares and Restricted Notes granted to certain officers of the Company on September 1, 2017 cliff vest three years from the date of grant, subject to the conditions set forth in the MIP. The Restricted Shares granted to certain members of the Board on April 25, 2018 cliff vested one year from the date of grant, subject to the conditions set forth in the MIP. The grant date fair value of the Restricted Shares was based on the market price of the Company's common stock on the date of grant. The following table summarizes the activity relating to the Company's Restricted Shares for the year ended December 31, 2019: Number of Shares Weighted-Average Beginning Balance 1,803 $ 3.19 Granted 15 1.77 Forfeited (168) 3.14 Vested (221) 3.52 Ending Balance 1,429 3.13 Expected to vest after December 31, 2019 1,429 3.13 Performance Share Units The Board has granted performance share unit awards ("PSUs") under the MIP to non-executive senior level managers and other select personnel. The PSUs contain a performance-based condition tied to the enterprise value of the Company. Each PSU that vests entitles the participant to receive, at the discretion of the Company's Board, either one share of the Company's common stock or cash equal to the fair market value of one share of the Company's common stock. Vesting occurs upon achievement of a defined enterprise value of the Company, with 50% vesting upon achievement of the defined enterprise value between the performance period September 30, 2020 and September 30, 2022, and the remaining 50% vesting upon the achievement of the defined enterprise value as a result of a specified transaction, as defined in the PSU agreement, on or before September 30, 2022. As of December 31, 2019, there were 791 PSUs outstanding. Share-Based Compensation Expense As of December 31, 2019, the unrecognized share-based compensation expense related to unvested Restricted Shares was $585 and the remaining unrecognized compensation cost is expected to be recognized over a weighted-average period of approximately 0.8 years. As discussed in Note 1 - Basis of Presentation and Significant Accounting Policies , the Company has elected to account for forfeitures as they occur. As of December 31, 2019, the unrecognized compensation expense related to the Restricted Notes was $214 and is expected to be recognized over a weighted-average period of approximately 0.7 years. The Company is recognizing this expense on a straight-line basis over the three Compensation expense recognized related to the PSUs is based on management’s expectation of future performance compared to the pre-established performance goals. If the performance goals are not expected to be met, no compensation expense is recognized and any previously recognized compensation expense is reversed. As of December 31, 2019, no compensation expense was recognized for these awards to date as the threshold for expense recognition for the performance-based condition had not been met. Total share-based compensation expense was $2,862 for the year ended December 31, 2019 and $2,784 for the year ended December 31, 2018.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
Employee Benefit Plans	Dec. 31, 2019
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans Pension Plans Certain employees of the Company are covered by a Company-sponsored qualified pension plan and a supplemental non-qualified, unfunded pension plan (collectively, the “Pension Plans”). These Pension Plans are defined benefit, noncontributory plans. Benefits paid to retirees are based upon age at retirement, years of credited service and average earnings. The Company uses a December 31 measurement date for the pension plans. The Company-sponsored pension plans are frozen for all employees except for employees represented by the United Steelworkers of America. The assets of the Company-sponsored qualified pension plan are maintained in a single trust account. Effective January 1, 2017, the Company opened a lump-sum payout option to participants and their surviving spouses eligible to receive postretirement defined benefit pension payments under the Company-sponsored qualified pension plan. Eligible pension plan participants were provided the opportunity to elect to receive a one-time lump-sum payment equal to the actuarial equivalent present value of the participant's accrued benefit payable at the participant's normal retirement date. Pension benefit payments paid from pension plan assets under the lump-sum payout options were $3,375 and $1,931 during the years ended December 31, 2019 and December 31, 2018, respectively. In 2018, the collective bargaining agreement was updated to provide an increase in the benefit multiplier for eligible hourly participants in the qualified pension plan, effective May 15, 2018 through September 30, 2022. As a result of this amendment, a prior service cost base was established and the impact of this plan amendment was included in the projected benefit obligation as of December 31, 2018. The Company’s funding policy is to satisfy the minimum funding requirements of the Employee Retirement Income Security Act ("ERISA"). Based upon factors known and considered as of December 31, 2019, including the funding requirements under ERISA, the Company does not anticipate making significant cash contributions to the pension plans in 2020. Components of net periodic pension plans benefit were as follows: Year Ended December 31, 2019 2018 Service cost $ 357 $ 434 Interest cost 5,233 4,858 Expected return on assets (6,124) (7,883) Amortization of actuarial loss 52 — Net periodic pension plans benefit $ (482) $ (2,591) The Company expects amortization of pension prior service cost of $52 and no amo rtization of actuarial gain/loss for the next fiscal year. The status of the Pension Plans was as follows: Year Ended December 31, 2019 2018 Change in projected benefit obligation: Projected benefit obligation at beginning of period $ 148,479 $ 157,427 Service cost 357 434 Interest cost 5,233 4,858 Benefit payments (12,380) (10,959) Actuarial loss (gain) 16,054 (3,631) Plan amendment resulting from change in collective bargaining agreement — 350 Projected benefit obligation at end of period $ 157,743 $ 148,479 Change in plan assets: Fair value of plan assets at beginning of period $ 145,065 $ 162,758 Actual return on assets 24,933 (7,105) Employer contributions 384 371 Benefit payments (12,380) (10,959) Fair value of plan assets at end of period $ 158,002 $ 145,065 Funded status – net asset (liability) $ 259 $ (3,414) Amounts recognized in the consolidated balance sheets consist of: Prepaid pension cost $ 5,758 $ 1,754 Accrued liabilities (390) (389) Pension benefit obligations (5,109) (4,779) Net amount recognized $ 259 $ (3,414) Pre-tax components of accumulated other comprehensive loss: Unrecognized actuarial gain $ 8,568 $ 11,322 Unrecognized prior service cost 298 350 Total $ 8,866 $ 11,672 Accumulated benefit obligation $ 157,698 $ 148,479 For the plans with an accumulated benefit obligation in excess of plan assets, the projected benefit obligation, accumulated benefit obligation and fair value of plan assets were $5,499, $5,499 and $0, respectively, at December 31, 2019, and $148,479, $148,479 and $145,065, respectively, at December 31, 2018. The assumptions used to measure the projected benefit obligations of the Company’s Pension Plans were as follows: Year Ended December 31, 2019 2018 Discount rate 2.99% - 3.11% 4.00% - 4.06% Projected annual salary increases 3.00% 0% The assumptions used to determine net periodic pension cost of the Company’s Pension Plans were as follows: Year Ended December 31, 2019 2018 Discount rate 4.00% - 4.06% 3.51% - 3.58% Expected long-term rate of return on plan assets 5.00% 5.00% The Company’s expected long-term rate of return on plan assets is derived from reviews of asset allocation strategies and historical and anticipated future long-term performance of individual asset classes. The Company’s analysis gives consideration to historical returns and long-term, prospective rates of return. For salaried and hourly, non-union participants, the Pension Plans were frozen in July 2008. As a result, the projected benefit obligations or net periodic pension cost are based on the accrued benefit as of that date and the Company has not used a projected annual salary increase assumption. For hourly, union participants, the accrued benefit is based on a multiplier that is pre-defined per the agreement governing the Pension Plans, which includes the accrued benefit for the participants vacation pay that is based on the participant's final hourly rate at retirement. Therefore, the projected benefit obligations or expense for hourly, union participants in the Pension Plans assumes a 3% projected annual salary increase for the year ended December 31, 2019. The assets of the Company-sponsored qualified pension plan are allocated primarily to fixed income securities at December 31, 2019 and December 31, 2018. The assets of the Company-sponsored qualified pension plan are managed in accordance with investment policies recommended by its investment advisor and approved by the human resources committee of the board of directors (the "Committee"). The overall target portfolio allocation is 100% fixed income securities. These funds’ conformance with style profiles and performance is monitored regularly by management, with the assistance of the Company’s investment advisor. Adjustments are typically made in the subsequent quarters when investment allocations deviate from the target range. The investment advisor provides quarterly reports to management and the Committee. In accordance with ASU No. 2015-07, "Fair Value Measurement (Topic 820): Disclosures for Investments in Certain Entities That Calculate Net Asset Value ("NAV") per Share (or Its Equivalent)," certain of the Company's investments have been valued using the NAV per share (or its equivalent) practical expedient and are therefore not classified in the fair value hierarchy. The fair value amounts presented in these tables for the Company's investments are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the reconciliation of changes in the plan's benefit obligations and fair value of plan assets above. The fair values of the assets of the Company-sponsored qualified pension plan fall within the following levels of the fair value hierarchy as of December 31, 2019: Level 1 Level 2 Level 3 Total Fixed income securities (a) $ 8,925 $ 172,293 $ — $ 181,218 Investments measured at net asset value 8,662 Accounts payable – pending trades (31,878) Total $ 158,002 (a) Fixed income securities are comprised of corporate bonds (72%), government bonds (17%), government agency securities (1%) and other fixed income securities (10%). The fair values of the assets of the Company-sponsored qualified pension plan fall within the following levels of the fair value hierarchy as of December 31, 2018: Level 1 Level 2 Level 3 Total Fixed income securities (b) $ 9,232 $ 136,778 $ — $ 146,010 Investments measured at net asset value 7,323 Accounts payable – pending trades (8,268) Total $ 145,065 (b) Fixed income securities are comprised of corporate bonds (75%), government bonds, (17%) government agency securities (2%) and other fixed income securities (6%). The estimated future pension benefit payments are: 2020 $ 11,900 2021 10,810 2022 10,770 2023 10,180 2024 10,180 2024 — 2028 48,930 The Company was party to a multi-employer pension plan in Ohio from which it has stated its intention to withdraw. As of December 31, 2019, the total estimated liability to withdraw from the plan is $3,134. The current liability associated with the Company's withdrawal from the multi-employer pension plan of $240 is included in accrued and other current liabilities in the Consolidated Balance Sheet and the long-term liability of $2,894 is included in other noncurrent liabilities in the Consolidated Balance Sheet. Postretirement Plan The Company also provides declining value life insurance to its retirees and a maximum of three years of medical coverage to qualified individuals who retire between the ages of 62 and 65. The Company does not fund these benefits in advance, and uses a December 31 measurement date. Components of net periodic postretirement plan benefit were as follows: Year Ended December 31, 2019 2018 Service cost $ 67 $ 35 Interest cost 56 41 Amortization of prior service credit (2) — Amortization of actuarial loss 42 — Net periodic postretirement plan cost $ 163 $ 76 The Comp any expects amortization of prior service cost of $2 and amortization of actuarial loss of $49 the next fiscal year. The status of the postretirement plan was as follows: Year Ended December 31, 2019 2018 Change in accumulated postretirement benefit obligations: Accumulated postretirement benefit obligation at beginning of period $ 1,627 $ 1,438 Service cost 67 35 Interest cost 56 41 Benefit payments (22) (426) Actuarial loss 32 556 Contribution change per collective bargaining agreement — (17) Accumulated postretirement benefit obligation at end of period $ 1,760 $ 1,627 Funded status – net liability $ (1,760) $ (1,627) Amounts recognized in the consolidated balance sheets consist of: Accrued liabilities $ (160) $ (85) Postretirement benefit obligations (1,600) (1,542) Net amount recognized $ (1,760) $ (1,627) Pre-tax components of accumulated other comprehensive loss: Unrecognized prior service cost $ (15) $ (17) Unrecognized actuarial loss 548 558 Total $ 533 $ 541 The assumed health care cost trend rates for medical plans were as follows: Year Ended December 31, 2019 2018 Medical cost trend rate 6.75% 7.00% Ultimate medical cost trend rate 4.50% 4.50% Year ultimate medical cost trend rate will be reached 2030 2027 A 1% increase in the health care cost trend rate assumptions would have increased the accumulated postretirement benefit obligation as of December 31, 2019 by $57 with no significant impact on the annual periodic postretirement benefit cost. A 1% decrease in the health care cost trend rate assumptions would have decreased the accumulated postretirement benefit obligation as of December 31, 2019 by $53 with no significant impact on the annual periodic postretirement benefit cost. The weighted average discount rate used to determine the net periodic postretirement benefit costs and the accumulated postretirement benefit obligations were as follows: Year Ended December 31, 2019 2018 Net periodic postretirement benefit costs 3.90% 3.45% Accumulated postretirement benefit obligations 2.92% 3.90% Retirement Savings Plans The Company’s retirement savings plan for U.S. employees includes features under Section 401(k) of the Internal Revenue Code. The Company provides a 401(k) matching contribution of 100% of each dollar on eligible employee contributions up to the first 3% of the employee’s pre-tax compensation, and an additional 50% of each dollar on eligible employee contributions up to the next 2% of the employee's pre-tax compensation. Each year, in addition to the employer matching contribution, the Company's Chief Executive Officer may approve a discretionary Company contribution up to 4% of eligible employee's annual pre-tax compensation. The discretionary contribution is provided as an identical percentage of each employee's annual pre-tax compensation, regardless of their individual contributions to the 401(k) program. Company contributions cliff vest after two years of employment. There was no discretionary contribution made in either the year ended December 31, 2019 or the year ended December 31, 2018. The amounts expensed by the Company relating to its 401(k) plan and other international retirement plans were $1,672 for the year ended December 31, 2019 and $2,114 for the year ended December 31, 2018.

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The components of (loss) income before income taxes were as follows: Year Ended December 31, 2019 2018 Domestic $ (49,024) $ (48,194) Foreign 5,610 6,270 The income taxes benefit consisted of the following components: Year Ended December 31, 2019 2018 Federal current $ (99) $ (413) deferred (4,834) (5,000) State current (116) 296 deferred (1,189) (1,761) Foreign current 1,307 1,986 deferred 32 113 $ (4,899) $ (4,779) The items accounting for differences between the income tax benefit computed at the federal statutory rate and the provision for income taxes were as follows: Year Ended December 31, 2019 2018 Federal income tax at statutory rates $ (9,117) $ (8,804) State income taxes, net of federal income tax benefits (2,249) (1,536) Permanent items: Foreign inclusions 1,104 369 Other permanent differences 585 804 Rate differential on foreign income 262 452 Valuation allowance 3,667 (40,849) Provision to return adjustments 182 2,910 Net operating loss ("NOL") carryforward asset limitation — 41,767 Other 667 108 Income tax benefit $ (4,899) $ (4,779) Effective income tax benefit rate 11.3 % 11.4 % The Company's U.S. federal corporate income tax statutory rate is 21%. Substantially all of the Company's federal and state NOL carryforwards are expected to be limited by Internal Revenue Code Section 382 ("Section 382") due to the ownership change in 2017 resulting from the Company's restructuring through its chapter 11 cases. In the year ended December 31, 2018, the Company wrote-off the federal and state net operating loss deferred tax assets that are statutorily unusable in future periods due to these Section 382 limitations and the pre-2017 NOL carryforward periods. There was a corresponding reduction to the valuation allowance in the same amount. As a U.S. shareholder, the Company is subject to tax on Global Intangible Low-Taxed Income (“GILTI”) earned by certain foreign subsidiaries. At December 31, 2019, the Company has elected to include $1,304 of tax expense related to GILTI as a period expense. A deferred tax asset of $1,086 at December 31, 2019 and $1,208 at December 31, 2018 associated with the temporary difference between the financial reporting basis and tax basis of the Second Lien Notes conversion feature at each balance sheet date was reclassified from a liability to additional paid-in capital on December 31, 2019 and December 31, 2018, respectively (see Note 5 - Stockholders' Equity ). Significant components of deferred tax assets and liabilities are as follows: December 31, 2019 2018 Deferred tax assets: Pension and postretirement benefits $ 1,208 $ 2,111 Deferred compensation 973 1,452 Restructuring related and other reserves 6 4 Operating lease liabilities 10,314 — Alternative minimum tax and net operating loss carryforward 19,529 11,227 Inventory 4,161 5,223 Intangible assets and goodwill 4,744 5,561 Other, net 1,741 1,841 Deferred tax assets before valuation allowance 42,676 27,419 Valuation allowance (14,344) (10,842) Total deferred tax assets $ 28,332 $ 16,577 Deferred tax liabilities: Depreciation $ 4,394 $ 5,372 Operating right-of-use asset 10,300 — Excess of book basis over tax basis in investments 318 225 Convertible debt discount 15,140 16,834 Other, net 421 425 Total deferred tax liabilities 30,573 22,856 Net deferred tax liabilities $ (2,241) $ (6,279) As of December 31, 2019, the Company had $12,307 of federal and $10,257 of state net operating loss carryforwards which will begin expiring in 2034 and 2022, respectively, and $1,005 of federal AMT credits which will be fully refundable by 2021, and $546 of state credit carryforwards which will begin expiring in 2024. Substantially all of the Company's federal and state net operating loss carryforwards are expected to be limited by IRC Section 382 due to the ownership change in 2017 resulting from the Company's restructuring through its chapter 11 cases. As of December 31, 2019, the Company had $33,119 of foreign net operating loss carryforwards, of which a significant portion carry forward for an indefinite period. The Tax Act includes new limitations on interest expense deductions. As of December 31, 2019, the portion of the non-deductible interest expense as a result of the Tax Act will be carried forward. The Company continues to maintain valuation allowances against substantially all U.S. and foreign deferred tax assets to reduce those deferred tax assets to amounts that are realizable either through future reversals of existing taxable temporary differences or through taxable income in carryback years for the applicable jurisdictions. Activity in the Company's valuation allowances for the U.S. and non-U.S. operations were as follows: Year Ended December 31, 2019 2018 Domestic Balance, beginning of period $ 2,271 $ 43,037 Provision charged to expense 3,949 — Reduction due to Section 382 limitations — (40,766) Provision charged to discontinued operations and other comprehensive income (92) — Balance, end of period $ 6,128 $ 2,271 Foreign Balance, beginning of period $ 8,571 $ 9,116 Impact of foreign exchange on beginning of period balance 240 (437) Provision charged to expense (595) (108) Balance, end of period $ 8,216 $ 8,571 The Company is subject to taxation in the U.S, state jurisdictions and foreign jurisdictions. Significant judgment is required in determining the worldwide provision for income taxes and recording the related income tax assets and liabilities. The Company recognizes the financial statement benefit of a tax position only after determining that the relevant tax authority would more-likely-than-not sustain the position following an audit. For tax positions meeting the more-likely-than-not criterion, the amount recognized in the financial statements is the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate settlement with the relevant tax authority. In the ordinary course of business, the Company is subject to review by domestic and foreign taxing authorities, including the IRS. In general, the Company is no longer subject to audit by the IRS for tax years through 2012 and state, local or foreign taxing authorities for tax years through 2011. Pursuant to changes made by the Tax Act, remittances from subsidiaries held by the Company made in 2019 and future years are generally not subject to U.S. federal income tax. These remittances are either excluded from taxable income in the United States as earnings that are already subject to taxation or are subject to a 100% dividends received deduction. There are no other differences which would cause the Company to be required to record a material deferred tax liability.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	12 Months Ended
Commitments and Contingent Liabilities	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Commitments and Contingent LiabilitiesFrom time to time, the Company is party to a variety of legal proceedings, claims, and inquiries, including proceedings or inquiries by governmental authorities, which arise from the operation of its business. These proceedings, claims, and inquiries are incidental to and occur in the normal course of the Company's business affairs. The majority of these proceedings, claims, and inquiries relate to commercial disputes with customers, suppliers, and others; employment and employee benefits-related disputes; product quality disputes with vendors and/or customers; and environmental, health and safety claims. Although the outcome of these proceedings is inherently difficult to predict, management believes that the amount of any judgment, settlement or other outcome of these proceedings, claims and inquiries, after taking into account recorded accruals and the availability and limits of our insurance coverage, will not have a material adverse effect on the Company’s consolidated results of operations, financial condition or cash flows.

Segment Reporting

Segment Reporting	12 Months Ended
Segment Reporting	Dec. 31, 2019
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting The Company has only one reportable segment, Metals. The Company’s marketing strategy focuses on distributing highly engineered specialty grades and alloys of metals as well as providing specialized processing services designed to meet very precise specifications. Core products include alloy, aluminum, stainless steel, nickel, carbon and titanium. Inventories of these products assume ma ny forms such as plate, sheet, ex trusions, round bar, hexagon bar, square and flat bar, tubing and coil. Depending on the size of the facility and the nature of the markets it serves, service centers are equipped as needed with bar saws, plate saws, oxygen and plasma arc flame cutting machinery, trepanning machinery, boring machinery, honing equipment, water-jet cutting equipment, stress relieving and annealing furnaces, surface grinding equipment, CNC machinery and sheet shearing equipment. The Company also performs various specialized fabrications for its customers through pre-qualified subcontractors that thermally process, turn, polish, cut-to-length and straighten alloy and carbon bar. The Company operates primarily in North America. Net sales are attributed to countries based on the location of the Company’s subsidiary that is selling direct to the customer and exclude assessed taxes such as sales and excise tax. Company-wide geographic data is as follows: Year Ended December 31, 2019 2018 Net sales United States $ 360,748 $ 379,155 Canada 42,468 47,454 Mexico 49,915 62,431 France 53,644 50,900 China 34,897 25,288 All other countries 17,919 16,742 Total $ 559,591 $ 581,970 December 31, 2019 2018 Long-lived assets United States $ 38,482 $ 43,698 Canada 2,508 2,579 Mexico 3,233 3,549 France 1,961 2,162 China 374 384 All other countries 881 828 Total $ 47,439 $ 53,200

Guarantor Financial Information

Guarantor Financial Information	12 Months Ended
Guarantor Financial Information	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Guarantor Financial Information	Guarantor Financial Information As described in Note 12 - Subsequent Event , the Company plans to commence an exchange offer to holders of the Second Lien Notes to exchange shares of its common stock and its new 3.00% Cash / 5.00% PIK Convertible Senior Secured Notes due 2024 (the "New Notes") in exchange for any and all outstanding Second Lien Notes. The New Notes, to be issued by A.M. Castle & Co. (the “Parent”), will be unconditionally guaranteed on a joint and several basis by all current and future domestic subsidiaries of the Parent (other than those designated as unrestricted subsidiaries) and the parent’s subsidiaries in Canada and Mexico (collectively, the “Guarantors”). Each guarantor is 100% owned by the Parent. Under the proposed exchange offer, the guarantees of the Guarantors will be subject to release in limited circumstances, only upon the occurrence of certain customary conditions. There will be no significant restrictions on the ability of the parent company or any guarantor to obtain funds from its subsidiaries by dividend or loan. The accompanying financial statements have been prepared and presented pursuant to Rule 3-10 of SEC Regulation S-X “Financial Statements of Guarantors and Issuers of Guaranteed Securities Registered or Being Registered.” The financial statements present condensed consolidating financial information for the Parent, the Guarantors, the non-guarantor subsidiaries (all other subsidiaries) and an elimination column for adjustments to arrive at the information for the Parent, Guarantors, and non-guarantors on a consolidated basis. The condensed consolidating financial information has been prepared on the same basis as the consolidated statements of the Parent. The equity method of accounting is followed within this financial information. Condensed Consolidated Statements of Operations and Comprehensive Loss For the year ended December 31, 2019 Parent Guarantors Non-Guarantors Eliminations Consolidated Net sales $ 361,232 $ 92,576 $ 106,528 $ (745) $ 559,591 Costs and expenses: Cost of materials (exclusive of depreciation) 257,387 73,347 88,817 (745) 418,806 Warehouse, processing and delivery expense 59,569 11,152 6,846 — 77,567 Sales, general and administrative expense 53,467 4,782 6,308 — 64,557 Depreciation expense 7,128 982 649 — 8,759 Total costs and expenses 377,551 90,263 102,620 (745) 569,689 Operating (loss) income (16,319) 2,313 3,908 — (10,098) Interest expense, net 38,792 1,076 34 — 39,902 Other income, net (6,085) (1,173) 672 — (6,586) (Loss) income before income taxes (49,026) 2,410 3,202 — (43,414) Income tax (benefit) expense (5,894) 236 759 — (4,899) Equity in earnings of subsidiaries (4,617) — — 4,617 — Net (loss) income $ (38,515) $ 2,174 $ 2,443 $ (4,617) $ (38,515) Comprehensive (loss) income $ (37,541) $ 1,075 $ 2,434 $ (3,509) $ (37,541) Condensed Consolidated Statements of Operations and Comprehensive Loss For the year ended December 31, 2018 Parent Guarantors Non-Guarantors Eliminations Consolidated Net sales $ 379,213 $ 109,922 $ 92,934 $ (99) $ 581,970 Costs and expenses: Cost of materials (exclusive of depreciation) 274,037 84,970 78,144 (99) 437,052 Warehouse, processing and delivery expense 63,660 12,807 7,168 — 83,635 Sales, general and administrative expense 58,352 4,762 5,819 — 68,933 Depreciation expense 7,462 922 698 — 9,082 Total costs and expenses 403,511 103,461 91,829 (99) 598,702 Operating (loss) income (24,298) 6,461 1,105 — (16,732) Interest expense, net 31,787 1,061 324 — 33,172 Other income, net (7,894) 1,970 (2,056) — (7,980) (Loss) income before income taxes (48,191) 3,430 2,837 — (41,924) Income tax (benefit) expense (6,714) 1,593 342 — (4,779) Equity in earnings of subsidiaries (4,332) — — 4,332 — Net (loss) income $ (37,145) $ 1,837 $ 2,495 $ (4,332) $ (37,145) Comprehensive (loss) income $ (48,824) $ 2,082 $ (242) $ (1,840) $ (48,824) Condensed Consolidating Balance Sheet Parent Guarantors Non-Guarantors Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 1,000 $ 2,295 $ 3,138 $ — $ 6,433 Accounts receivable, less allowance for doubtful accounts 43,321 16,147 15,229 — 74,697 Inventories 95,252 26,154 23,005 — 144,411 Prepaid expenses and other current assets 4,074 4,190 3,399 — 11,663 Total current assets 143,647 48,786 44,771 — 237,204 Goodwill and intangible assets 8,176 — — — 8,176 Operating right-of-use assets 18,825 6,259 4,339 — 29,423 Other non-current assets 8,362 234 (512) — 8,084 Investment in subsidiaries 95,599 — — (95,599) — Receivables from affiliates 60,388 60,547 8,551 (129,486) — Property, plant and equipment, net 38,483 5,741 3,215 — 47,439 Total assets $ 373,480 $ 121,567 $ 60,364 $ (225,085) $ 330,326 Liabilities and Stockholders’ (Deficit) Equity Current liabilities: Accounts payable $ 32,280 $ 5,800 $ 3,665 $ — $ 41,745 Other current liabilities 12,615 4,231 2,048 — 18,894 Short-term borrowings — — 2,888 — 2,888 Total current liabilities 44,895 10,031 8,601 — 63,527 Long-term debt, less current portion 263,523 — — — 263,523 Payables due to affiliates 69,098 48,174 12,214 (129,486) — Deferred income taxes 3,637 — 138 — 3,775 Non-current operating lease liabilities 15,590 3,894 3,276 — 22,760 Other non-current liabilities 17,807 — 4 — 17,811 Stockholders’ (deficit) equity (41,070) 59,468 36,131 (95,599) (41,070) Total liabilities and stockholders’ (deficit) equity $ 373,480 $ 121,567 $ 60,364 $ (225,085) $ 330,326 Condensed Consolidating Balance Sheet Parent Guarantors Non-Guarantors Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 3,079 $ 4,030 $ 1,559 $ — $ 8,668 Accounts receivable, less allowance for doubtful accounts 44,327 18,754 16,676 — 79,757 Receivables from affiliates 7 — — (7) — Inventories 104,882 28,191 27,613 — 160,686 Prepaid expenses and other current assets 6,263 6,205 3,144 — 15,612 Total current assets 158,558 57,180 48,992 (7) 264,723 Goodwill and intangible assets 8,176 — — — 8,176 Other non-current assets 3,789 188 316 — 4,293 Investment in subsidiaries 92,065 — — (92,065) — Receivables from affiliates 68,169 60,547 4,954 (133,670) — Property, plant and equipment, net 43,698 6,128 3,374 — 53,200 Total assets $ 374,455 $ 124,043 $ 57,636 $ (225,742) $ 330,392 Liabilities and Stockholders’ (Deficit) Equity Current liabilities: Accounts payable $ 31,802 $ 6,014 $ 4,903 $ — $ 42,719 Payables due to affiliates — 7 — (7) — Other current liabilities 13,484 4,171 684 — 18,339 Short-term borrowings — — 5,498 — 5,498 Total current liabilities 45,286 10,192 11,085 (7) 66,556 Long-term debt, less current portion 245,966 — — — 245,966 Payables due to affiliates 65,502 55,412 12,756 (133,670) — Deferred income taxes 7,421 — 119 — 7,540 Other non-current liabilities 19,641 44 6 — 19,691 Stockholders’ (deficit) equity (9,361) 58,395 33,670 (92,065) (9,361) Total liabilities and stockholders’ (deficit) equity $ 374,455 $ 124,043 $ 57,636 $ (225,742) $ 330,392 Condensed Consolidating Statement of Cash Flows Parent Guarantors Non-Guarantors Eliminations Consolidated Operating activities: Net (loss) income $ (38,515) $ 2,174 $ 2,443 $ (4,617) $ (38,515) Equity in earnings of subsidiaries (4,617) — — 4,617 — Adjustments to reconcile net (loss) income to net cash from (used in) operating activities 38,892 4,113 6,334 — 49,339 Net cash from (used in) operating activities (4,240) 6,287 8,777 — 10,824 Investing activities: Capital expenditures (2,154) (1,337) (530) — (4,021) Proceeds from sale of property, plant and equipment 8 434 — — 442 Net advances to subsidiaries 11,377 — — (11,377) — Net cash used in investing activities 9,231 (903) (530) (11,377) (3,579) Financing activities: Proceeds from long-term debt including credit facilities 3,500 — — — 3,500 Repayments of long-term debt including credit facilities (9,988) — — — (9,988) Net intercompany (repayments) borrowings — (7,238) (4,139) 11,377 — Other financing (582) — (2,490) — (3,072) Net cash (used in) from financing activities (7,070) (7,238) (6,629) 11,377 (9,560) Effect of exchange rate changes on cash and cash equivalents — 119 (39) — 80 Net change in cash and cash equivalents (2,079) (1,735) 1,579 — (2,235) Cash and cash equivalents—beginning of year 3,079 4,030 1,559 — 8,668 Cash and cash equivalents—end of year $ 1,000 $ 2,295 $ 3,138 $ — $ 6,433 Condensed Consolidating Statement of Cash Flows Parent Guarantors Non-Guarantors Eliminations Consolidated Operating activities: Net (loss) income $ (37,145) $ 1,837 $ 2,495 $ (4,332) $ (37,145) Equity in earnings of subsidiaries (4,332) — — 4,332 — Adjustments to reconcile net (loss) income to net cash (used in) from operating activities 17,961 (416) (4,181) — 13,364 Net cash (used in) from operating activities (23,516) 1,421 (1,686) — (23,781) Investing activities: Capital expenditures (4,130) (848) (709) — (5,687) Proceeds from sale of property, plant and equipment 8 — 69 — 77 Net advances to subsidiaries 392 — — (392) — Net cash from (used in) investing activities (3,730) (848) (640) (392) (5,610) Financing activities: Proceeds from long-term debt including credit facilities 49,954 — — — 49,954 Repayments of long-term debt including credit facilities (21,130) — — — (21,130) Net intercompany (repayments) borrowings — 58 (450) 392 — Other financing (1,396) — (115) — (1,511) Net cash from (used in) financing activities 27,428 58 (565) 392 27,313 Effect of exchange rate changes on cash and cash equivalents — (261) (97) — (358) Net change in cash and cash equivalents 182 370 (2,988) — (2,436) Cash and cash equivalents—beginning of year 2,897 3,660 4,547 — 11,104 Cash and cash equivalents—end of year $ 3,079 $ 4,030 $ 1,559 $ — $ 8,668

Subsequent Events

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On February 24, 2020, the Company's Board approved the commencement of an exchange offer (the “Exchange Offer”) pursuant to which the Company will issue shares of its common stock and its New Notes in exchange for any and all outstanding Second Lien Notes. The New Notes will be guaranteed on a senior basis by all current and future domestic subsidiaries (other than those designated as “Unrestricted Subsidiaries”) of the Issuer (the “Guarantors”) upon completion of the Exchange Offer. The restrictive covenants in the indenture governing the New Notes will be substantially similar to the covenants in the indenture governing the Second Lien Notes. All Second Lien Notes that are tendered and accepted as part of the Exchange Offer, as well as all accrued and unpaid interest on the tendered Second Lien Notes, will be exchanged into New Notes and the Company's common stock at the rate of $0.4918619 principal amount of New Notes and 0.3632585 shares of the Company's common stock per $1 principal amount of Second Lien Notes tendered on the date on which the Exchange Offer is completed. The Exchange Offer will be effected through the filing of a Registration Statement on Form S-4 (the “S-4 Registration Statement”). The New Notes will bear interest at a rate of 3.00% per annum if paid in cash or 5.00% if paid in kind per annum, payable quarterly. The New Notes will mature August 31, 2024 and will be convertible, at the option of the holders, into shares of the Company's common stock. Concurrently with the Exchange Offer, the Company is soliciting consents from holders of the Second Lien Notes for certain amendments to the indenture governing the Second Lien Notes to eliminate or amend substantially all of the restrictive covenants, release all collateral securing the Company’s obligations under the indenture governing the Second Lien Notes, and modify certain of the events of default and various other provisions, contained in such indenture. The filing of the S-4 Registration Statement triggers certain additional reporting obligations concerning the Issuer, the Parent and the Guarantors that are being satisfied through this filing, which will be incorporated by reference into the S-4 Registration Statement. This additional information concerns the Issuer, the Parent and Guarantors, which is hereby reported through additional footnote disclosure at Note 11 - Guarantor Financial Information

Basis of Presentation and Sig_2

Basis of Presentation and Significant Accounting Policies - (Policies)	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of presentation — The consolidated financial statements included herein and the notes thereto have been prepared by the Company pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”), and accounting principles generally accepted in the United States of America (“U.S. GAAP”). This report contains consolidated financial statements of the Company as of and for the years ended December 31, 2019 and December 31, 2018. The accompanying consolidated financial statements have been prepared on the basis of the Company continuing as a going concern for a reasonable period of time. The Company's principal source of liquidity is cash flows from operations and borrowings under its asset-based revolving credit facilities.
Use of estimates	Use of estimates — The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. The principal areas of estimation reflected in the consolidated financial statements are accounts receivable allowances, inventory reserves, the valuation of goodwill and intangible assets, the valuation of deferred income taxes, the fair value of the Company's Convertible Senior Secured Paid-in-Kind ("PIK") Toggle Notes due 2022 (the “Second Lien Notes”) and Revolving B Credit Facility (defined at Note 2 - Debt, in the Notes to the Consolidated Financial Statements), pension and other post-employment benefits, and share-based compensation.
Revenue recognition	Revenue recognition — Revenue from the sale of products is recognized when control of the product has transferred to the customer, which is primarily at the time of shipment to the customer. Revenue recognized other than at the time of shipment represented less than 1% of the Company’s consolidated net sales in both the year ended December 31, 2019 and the year ended December 31, 2018. Customer payment terms are established prior to the time of shipment. Provisions for allowances related to sales discounts and rebates are recorded based on terms of the sale in the period that the sale is recorded. Management utilizes historical information and the current sales trends of the business to estimate such provisions. The provisions related to discounts and rebates due to customers are recorded as a reduction within net sales. Revenue from shipping and handling charges is recorded in net sales. Costs incurred in connection with shipping and handling the Company’s products, which are related to third-party carriers or performed by Company personnel, are included in warehouse, processing and delivery expenses. In the year ended December 31, 2019 and the year ended December 31, 2018, shipping and handling costs included in warehouse, processing and delivery expenses were $23,807 and $26,704, respectively. The Company accounts for shipping and handling activities as fulfillment costs and not a promised good or service. The Company maintains an allowance for doubtful accounts related to the potential inability of customers to make required payments. The allowance for doubtful accounts is maintained at a level considered appropriate based on historical experience and specific identification of customer receivable balances for which collection is unlikely. The provision for doubtful accounts is recorded in sales, general and administrative expense in the Company’s Consolidated Statements of Operations and Comprehensive Loss. Estimates of doubtful accounts are based on historical write-off experience as a percentage of net sales and judgments about the probable effects of economic conditions on certain customers. The Company also maintains an allowance for credit memos for estimated credit memos to be issued against current sales. Estimates of allowance for credit memos are based upon the application of a historical issuance lag period to the average credit memos issued each month.
Cost of materials	Cost of materials — Cost of materials consists of the costs the Company pays for metals and related inbound and transfer freight charges. It excludes depreciation, which is discussed below.
Operating Expenses	Operating expenses — Operating costs and expenses primarily consist of: • Warehouse, processing and delivery expenses, including occupancy costs, compensation and employee benefits for warehouse personnel, processing, shipping and handling costs; • Sales expenses, including compensation and employee benefits for sales personnel; • General and administrative expenses, including compensation for executive officers and general management, expenses for professional services primarily attributable to accounting and legal advisory services, bad debt expenses, data communication costs, computer hardware and maintenance expenses and occupancy costs for non-warehouse locations; and
Cash equivalents	Cash equivalents — Cash equivalents are highly liquid, short-term investments that have an original maturity of 90 days or less.
Inventories	Inventories — Inventories consist primarily of finished goods. All of the Company's operations use the average cost method in determining the cost of inventory. The Company maintains an allowance for excess and obsolete inventory. The excess and obsolete inventory allowance is determined through the specific identification of material, adjusted for expected scrap value to be received, based on previous sales experience.
Property, plant and equipment	Property, plant and equipment — Property, plant and equipment are stated at cost and include assets held under capital leases. Expenditures for major additions and improvements are capitalized, while maintenance and repair costs that do not substantially improve or extend the useful lives of the respective assets are expensed in the period in which they are incurred. When items are disposed, the related costs and accumulated depreciation are removed from the accounts and any gain or loss is reflected in income.
Long-lived assets	Long-lived assets — The Company’s long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset or asset group to future net cash flows (undiscounted and without interest charges) expected to be generated by the asset or asset group. If future net cash flows are less than the carrying value, the asset or asset group may be impaired. If such assets are impaired, the impairment charge is calculated as the amount by which the carrying amount of the assets exceeds the fair value of the assets. Determining whether impairment has occurred typically requires various estimates and assumptions, including determining which undiscounted cash flows are directly related to the potentially impaired
Goodwill and intangible assets	Goodwill and intangible assets — As of both December 31, 2019 and December 31, 2018, the Company had recorded goodwill with a carrying value of $2,676, none of which is tax deductible. There was no change in the carrying value of goodwill recognized in the year ended December 31, 2019. The Company's other intangible asset is comprised of an indefinite-lived trade name, which is not subject to amortization. The gross carrying value of the trade name intangible asset was $5,500 at both December 31, 2019 and December 31, 2018. The Company tests goodwill for impairment at the reporting unit level on an annual basis at December 1 of each year or more frequently if a significant event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. The Company assesses, at least quarterly, whether any events or circumstances have significantly changed which may imply that the carrying amount of its one reporting unit's goodwill is in excess of its fair value. Based on the results of the Company's goodwill impairment testing it has recorded no impairment charges in the year ended December 31, 2019 or since the goodwill was originally recognized. The Company currently has one reporting unit. The determination of the fair value of the reporting unit requires significant estimates and assumptions to be made by management. The fair value of the reporting unit is estimated using a combination of an income approach, which estimates fair value based on a discounted cash flow analysis using historical data, estimates of future cash flows and discount rates based on the view of a market participant, and a market approach, which estimates fair value using market multiples of various financial measures of comparable public companies. In selecting the appropriate assumptions, the Company considers the following: the selection of appropriate peer group companies; control premiums appropriate for acquisitions in the industry in which the Company competes; discount rates; terminal growth rates; long-term projections of future financial performance; and relative weighting of income and market approaches. The long-term projections used in the valuation are developed as part of the Company’s annual long-term planning process. The discount rates used to determine the fair values of the reporting unit is that of a hypothetical market participant which are developed based upon an analysis of comparable companies and include adjustments made to account for any individual reporting unit specific attributes such as, size and industry.
Income taxes	Income taxes — The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statement and the tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. The Company records valuation allowances against its deferred tax assets when it is more likely than not that the amounts will not be realized. In making such a determination, the Company considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies and recent results of operations. In the event the Company determines it would not be able to realize its deferred tax assets, a valuation allowance is recorded, which increases the provision for income taxes in the period in which that determination is made. During 2019, the Company's foreign assets remained pledged as collateral for certain borrowings. This continues to result in a taxable income inclusion in the U.S. of the annual earnings generated by its foreign subsidiaries. As a result of the enactment of H.R.1, “An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018” (the “Tax Act”) (also known as “The Tax Cuts and Jobs Act”) and this pledge of foreign assets, there are no remaining undistributed earnings which have not been subject to U.S. income taxation as of December 31, 2019 on which the Company would need to record any additional U.S. deferred tax liability. For uncertain tax positions, if any, the Company applies the provisions of relevant authoritative guidance, which requires application of a “more likely than not” threshold to the recognition and derecognition of tax positions. The Company’s ongoing assessments of the more likely than not outcomes of tax authority examinations and related tax positions require significant judgment and can increase or decrease the Company’s effective tax rate as well as impact operating results. As of December 31, 2019, the Company has no uncertain tax positions for which a tax or interest reserve has been recognized.
Insurance plans	Insurance plans — The Company is a member of a group captive insurance company (the “Captive”) domiciled in Grand Cayman Island. The Captive reinsures losses related to certain of the Company’s workers’ compensation, automobile and general liability risks that occur subsequent to August 2009. Premiums are based on the Company’s loss experience and are accrued as expenses for the period to which the premium relates. Premiums are credited to the Company’s “loss fund” and earn investment income until claims are actually paid. For claims that were incurred prior to August 2009, the Company is self-insured. Self-insurance amounts are capped, for individual claims and in the aggregate, for each policy year by an insurance company. Self-insurance reserves are based on unpaid, known claims (including related administrative fees assessed by the insurance company for claims processing) and a reserve for incurred but not reported claims based on the Company’s historical claims experience and development. The Company is self-insured up to a retention amount for medical insurance for its domestic operations. Self-insurance reserves are maintained based on incurred but not paid claims based on a historical lag.
Foreign currency	Foreign currency — For the majority of the Company’s operations, the functional currency is the local currency. Assets and liabilities of those operations are translated into U.S. dollars using year-end exchange rates, and income and expenses are translated using the average exchange rates for the reporting period. The currency effects of translating financial statements of the Company’s non-U.S. operations which operate in local currency environments are recorded in accumulated other comprehensive loss, a separate component of stockholders’ deficit. Transaction gains or losses resulting from foreign currency transactions have historically been primarily related to unhedged intercompany financing arrangements between the United States and Canada.
Loss per share	Loss per share — Diluted loss per share is computed by dividing net loss by the weighted average number of shares of common stock plus outstanding common stock equivalents. Common stock equivalents consist of restricted stock awards and contingently issuable shares related to the Company’s Second Lien Notes, which are included in the calculation of weighted average shares outstanding using the if-converted method. Refer to Note 2 - Debt
Concentrations	Concentrations — The Company’s customer base is w ell diversified and, therefore, the Company does not have dependence upon any single customer or a few customers. No single customer represented more than 5% of the Company’s total net sales in either the year ended December 31, 2019 or the year ended December 31, 2018. Approximately 64% of the Company’s net sales in the year ended December 31, 2019, and 65% in the year ended December 31, 2018, were from locations in the United States.
Share-based compensation	Share-based compensation — Compensation expense related to restricted share awards made to directors, officers and employees of the Company is recognized on a straight-line basis over the vesting period based on the estimated grant date fair value of the award. The Company accounts for forfeitures as they occur. Compensation expense related to performance share unit awards made to senior level managers and other select personnel is based on management’s expectation of future performance compared to the pre-established performance goals. If the performance goals are not expected to be met, no compensation expense is recognized and any previously recognized compensation expense is reversed.
New Accounting Standards	New Accounting Standards Recently Adopted Accounting Standards In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2016-02, "Leases (Topic 842)", which requires that lessees recognize assets and liabilities for leases with lease terms greater than 12 months in the statement of financial position. ASU No. 2016-02 also requires additional disclosures to help users of financial statements better understand the amount, timing and uncertainty of cash flows arising from leases. The provisions of ASU No. 2016-02 are to be applied using a modified retrospective approach, and are effective for fiscal years beginning after December 15, 2018, including interim reporting periods within that reporting period. Topic 842 was subsequently amended by ASU No. 2018-01, “Land Easement Practical Expedient for Transition to Topic 842”; ASU No. 2018-10, “Codification Improvements to Topic 842, Leases”; ASU No. 2018-11, “Leases (Topic 842): Targeted Improvements” (“ASU 2018-11”); and ASU No. 2018-20, “Narrow-Scope Improvements for Lessors” (collectively, "ASC 842"). ASU 2018-11 provides clarity on separating components of a lease contract and includes an option to not restate comparative periods in transition and elect to use the effective date of Topic 842 as the date of initial application. The Company adopted ASC 842 effective January 1, 2019 using the modified retrospective approach, as required. The Company elected the transition method that allows it to apply the new standard only to leases existing at the date of initial application, January 1, 2019, and recognized the cumulative effect of initially applying the standard as an adjustment to opening retained earnings for the fiscal year beginning January 1, 2019. Consequently, financial information has not been updated and the disclosures required under the new standard have not be provided for dates and periods before January 1, 2019. The Company has also elected the package of practical expedients permitted under the transition guidance, which among other things, allows the Company to carryforward the historical lease classification. ASC 842 also provides practical expedients for an entity’s ongoing accounting. The Company has made an accounting policy election to keep leases with an initial term of 12 months or less off the balance sheet and recognize those lease payments in the Consolidated Statements of Operations and Comprehensive Loss on a straight-line basis over the lease term. The Company has also elected the practical expedient to not separate lease and non-lease components for all of its real estate leases. The adoption of ASC 842 resulted in recognition of additional operating right of use assets and lease liabilities on the Company's Consolidated Balance Sheets as of January 1, 2019 of $35,508 and $35,470, respectively. Additionally, the Company’s build-to-suit financing obligation has been classified as a finance lease liability, resulting in a $246 adjustment to the Company’s beginning accumulated deficit. The adoption of Topic 842 did not have a material effect on the Company's consolidated net loss or liquidity. The Company has reclassified certain prior year presentations to conform to the current period presentation under ASC 842. Refer to Note 4 - Leases, for further information and disclosures related to the adoption of ASC 842. Recently Issued Account Standards Not Yet Effective In June 2016, the FASB issued ASU No. 2016-13, “Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 adds a current expected credit loss (“CECL”) impairment model to U.S. GAAP that is based on expected losses rather than incurred losses. Modified retrospective adoption is required with any cumulative-effect adjustment recorded to retained earnings as of the beginning of the period of adoption. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within the year of adoption. The Company does not expect the application of the CECL impairment model to have a significant impact on the Company's allowance for uncollectible amounts for accounts receivable. The Company will adopt the disclosure requirements of ASU No. 2016-13 in fiscal year 2020. In August 2018, the FASB issued ASU No. 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement.” ASU No. 2018-13 amends Fair Value Measurement (Topic 820) to add, remove, and modify fair value measurement disclosure requirements. The ASU’s changes to disclosures aim to improve the effectiveness of Topic 820's disclosure requirements under the aforementioned FASB disclosure framework project. ASU No. 2018-13 is effective for all entities for fiscal years beginning after December 15, 2019, including interim periods within the year of adoption. Early adoption is permitted for any eliminated or modified disclosures prescribed by the ASU. The Company will adopt the disclosure requirements of ASU No. 2018-13 in its Quarterly Report on Form 10-Q for the three-months ended March 31, 2020 and the Company expects it will have no impact on its fair value disclosures therein. Also in August 2018, the FASB issued ASU No. 2018-14, “Compensation – Retirement Benefits – Defined Benefit Plans - General (Topic 715-20): Disclosure Framework – Changes to the Disclosure Requirements for Defined Benefit Plan.” ASU No. 2018-14 amends Compensation - Retirement Benefits (Topic 715) to add or remove certain disclosure requirements related to defined benefit pension and other postretirement plans. The ASU’s changes to disclosures aim to improve the effectiveness of Topic 715's disclosure requirements under the FASB’s disclosure framework project. ASU No. 2018-14 is effective for public entities for fiscal years beginning after December 15, 2020. ASU No. 2018-14 does not impact the interim disclosure requirements of Topic 715. Early adoption is permitted. The Company will adopt the disclosure requirements of this new guidance in fiscal year 2021.

Basis of Presentation and Sig_3

Basis of Presentation and Significant Accounting Policies - (Tables)	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Allowance for Doubtful Accounts Activity	Accounts receivable allowance for doubtful accounts and credit memos activity is presented in the table below: December 31, 2019 2018 Balance, beginning of period $ 1,364 $ 1,586 Add Provision charged to expense (a) 472 379 Recoveries 19 44 Less Charges against allowance (89) (645) Balance, end of period $ 1,766 $ 1,364 (a) Includes the net amount of credit memos reserved and issued.
Non-Cash Investing and Financing Activities and Supplemental Cash Flow Information	Non-cash investing and financing activities and supplemental disclosures of consolidated cash flow information are as follows: December 31, 2019 2018 Non-cash investing and financing activities: Capital expenditures financed by accounts payable $ 27 $ 115 Reclassification of interest paid in kind to additional 3,547 3,430 Cash paid during the period for: Interest 7,075 5,110 Income taxes 1,647 866 Cash received during the period for: Income tax refunds 952 37
Excess and Obsolete Inventory Allowance Activity	Excess and obsolete inventory allowance activity is presented in the table below: December 31, 2019 2018 Balance, beginning of period $ 3,274 $ 1,680 Adjustments to provision 1,967 3,612 Charges against allowance (1,085) (2,018) Balance, end of period $ 4,156 $ 3,274
Estimated Useful Lives of Plant and Equipment	The Company provides for depreciation of plant and equipment sufficient to amortize the cost over their estimated useful lives as follows: Buildings and building improvements 5 – 40 years Plant equipment 5 – 20 years Furniture and fixtures 2 – 10 years Vehicles and office equipment 3 – 10 years
Basic and Diluted Earnings Per Share Calculations	The following table is a reconciliation of the basic and diluted loss per common share calculations: December 31, 2019 2018 Numerator: Net loss $ (38,515) $ (37,145) Denominator: Weighted average common shares outstanding 2,186 2,000 Effect of dilutive securities: Outstanding common stock equivalents — — Denominator for diluted loss per share 2,186 2,000 Net basic loss per common share $ (17.62) $ (18.57) Net diluted loss per common share $ (17.62) $ (18.57) Excluded outstanding share-based awards having an anti-dilutive effect 1,429 1,803 The computation of diluted loss per common share does not include common shares issuable upon conversion of the Company’s outstanding Second Lien Notes, as they were anti-dilutive under the if-converted method.

Debt (Tables)

Debt (Tables)	12 Months Ended
Debt (Tables)	Dec. 31, 2019
Debt Disclosure [Abstract]
Long-term Debt	Long-term debt consisted of the following: December 31, 2019 2018 LONG-TERM DEBT 5.00% / 7.00% Second Lien Notes due August 31, 2022 (a) 193,660 180,894 Floating rate Revolving A Credit Facility due February 28, 2022 102,000 108,488 12.00% Revolving B Credit Facility due February 28, 2022 (b) 25,788 22,875 Less: unvested restricted Second Lien Notes (c) (323) (1,378) Less: unamortized discount (57,313) (64,491) Less: unamortized debt issuance costs (289) (422) Total long-term debt $ 263,523 $ 245,966 Less: current portion of long-term debt — — Total long-term portion $ 263,523 $ 245,966 (a) Included in balance is interest paid in kind of $28,991 as of December 31, 2019 and $15,992 as of December 31, 2018. (b) Included in balance is interest paid in kind of $4,288 as of December 31, 2019 and $1,375 as of December 31, 2018. (c) Represents unvested portion of restricted Second Lien Notes issued to certain members of management (see Note 6 - Share-based compensation ).

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
Fair Value Measurements (Tables)	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Schedule of Valuation Assumptions used in Determining Fair Value	The main inputs and assumptions into the fair value model for the Second Lien Notes at December 31, 2019 were as follows: Risk-free interest rate 1.61 % Credit spreads 22.86 % PIK premium spread 2.00 % Volatility 50.00 %

Lease Agreements - (Tables)

Lease Agreements - (Tables)	12 Months Ended
Lease Agreements - (Tables)	Dec. 31, 2019
Leases [Abstract]
Assets And Liabilities, Leases	Lease-related assets and liabilities consisted of the following: Classification on the Balance Sheet December 31, 2019 ASSETS Operating lease assets Operating right-of-use assets $ 29,423 Finance lease assets Property, plant and equipment, net 10,293 Total lease assets $ 39,716 LIABILITIES Current Operating Operating lease liabilities $ 6,537 Finance Current portion of finance leases 596 Noncurrent Operating Noncurrent operating lease liabilities 22,760 Finance Finance leases, less current portion 8,208 Total liabilities $ 38,101 Weighted average remaining lease term (years) Operating leases 5.5 Finance leases 10.9 Weighted average discount rate Operating leases 5.2 % Finance leases 4.7 %
Lease, Cost	Lease-related expenses were as follows: Year Ended December 31, 2019 Finance lease expense: Amortization of finance lease assets $ 1,046 Interest on finance lease liabilities 424 Operating lease expense 8,551 Variable lease expense 612 Short-term lease expense 34 Sublease income (1) (744) Total lease expense $ 9,923 (1) Relates primarily to one property subleased through September 2020. Lease-related supplemental cash flow information was as follows: Year Ended December 31, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases (8,633) Operating cash for finance leases (424) Financing cash flows for finance leases (611) Lease obligations obtained in exchange for right-of-use assets: Operating leases 1,713
Finance Lease, Liability, Maturity	Maturities of lease liabilities as of December 31, 2019 are as follows: Year ending December 31: Finance Leases Operating Leases 2020 $ 991 $ 7,716 2021 955 7,042 2022 975 6,010 2023 992 4,860 2024 1,012 2,176 Later years 6,365 5,866 Total lease payments 11,290 33,670 Less: imputed interest (2,486) (4,373) Total lease obligations $ 8,804 $ 29,297
Lessee, Operating Lease, Liability, Maturity	Maturities of lease liabilities as of December 31, 2019 are as follows: Year ending December 31: Finance Leases Operating Leases 2020 $ 991 $ 7,716 2021 955 7,042 2022 975 6,010 2023 992 4,860 2024 1,012 2,176 Later years 6,365 5,866 Total lease payments 11,290 33,670 Less: imputed interest (2,486) (4,373) Total lease obligations $ 8,804 $ 29,297
Schedule of Future Minimum Lease Payments for Capital Leases	Comparable future minimum rental payments under leases that have initial or remaining non-cancelable lease terms in excess of one year as previously disclosed under Account Standards Codification No. 840, (Leases) ("ASC 840") as of December 31, 2018 are as follows: Finance Leases Operating Leases Built-to-Suit Lease 2019 $ 119 $ 7,882 $ 915 2020 56 7,398 933 2021 2 6,414 952 2022 2 5,702 971 2023 1 4,828 990 Later years — 8,068 7,461 Total future minimum rental payments $ 180 $ 40,292 $ 12,222
Schedule of Future Minimum Rental Payments for Operating Leases	Comparable future minimum rental payments under leases that have initial or remaining non-cancelable lease terms in excess of one year as previously disclosed under Account Standards Codification No. 840, (Leases) ("ASC 840") as of December 31, 2018 are as follows: Finance Leases Operating Leases Built-to-Suit Lease 2019 $ 119 $ 7,882 $ 915 2020 56 7,398 933 2021 2 6,414 952 2022 2 5,702 971 2023 1 4,828 990 Later years — 8,068 7,461 Total future minimum rental payments $ 180 $ 40,292 $ 12,222

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
Stockholders' Equity (Tables)	Dec. 31, 2019
Stockholders' Equity Note [Abstract]
Components of Accumulated Other Comprehensive Loss	The components of accumulated other comprehensive loss are as follows: December 31, 2019 2018 Unrecognized pension and postretirement costs, net of tax $ (7,071) $ (9,153) Foreign currency translation losses, net of tax (6,303) (5,195) Total accumulated other comprehensive loss, net of tax $ (13,374) $ (14,348)
Schedule of Changes in Accumulated Other Comprehensive (Loss) Income	Changes in accumulated other comprehensive (loss) income by component are as follows: Defined Benefit Pension and Postretirement Items Foreign Currency Items Total Year Ended December 31, Year Ended December 31, Year Ended December 31, 2019 2018 2019 2018 2019 2018 Beginning Balance $ (9,153) $ 34 $ (5,195) $ (2,703) $ (14,348) $ (2,669) Other comprehensive income (loss) before reclassifications, net of tax 1,990 (9,187) (1,108) (2,492) 882 (11,679) Amounts reclassified from accumulated other comprehensive loss, net of tax (a) 92 — — — 92 — Net current period other comprehensive income (loss) 2,082 (9,187) (1,108) (2,492) 974 (11,679) Ending Balance $ (7,071) $ (9,153) $ (6,303) $ (5,195) $ (13,374) $ (14,348) (a) See reclassifications from accumulated other comprehensive loss table below for details of reclassification from accumulated other comprehensive loss for the years ended December 31, 2019 and December 31, 2018 .
Reclassifications From Accumulated Other Comprehensive Loss	Reclassifications from accumulated other comprehensive loss are as follows: December 31, 2019 2018 Unrecognized pension and postretirement benefit items: Prior service credit $ (2) $ — Actuarial loss 94 — Total before tax 92 — Tax effect — — Total reclassifications for the period, net of tax (a) $ 92 $ — (a) The total reclassifications for the period are included in other income, net.

Share-based Compensation (Table

Share-based Compensation (Tables)	12 Months Ended
Share-based Compensation (Tables)	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Summary of Activity Related to Restricted Shares	The following table summarizes the activity relating to the Company's Restricted Shares for the year ended December 31, 2019: Number of Shares Weighted-Average Beginning Balance 1,803 $ 3.19 Granted 15 1.77 Forfeited (168) 3.14 Vested (221) 3.52 Ending Balance 1,429 3.13 Expected to vest after December 31, 2019 1,429 3.13

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
Employee Benefit Plans (Tables)	Dec. 31, 2019
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Components of the Net Periodic Pension and Postretirement Benefit Cost	Components of net periodic pension plans benefit were as follows: Year Ended December 31, 2019 2018 Service cost $ 357 $ 434 Interest cost 5,233 4,858 Expected return on assets (6,124) (7,883) Amortization of actuarial loss 52 — Net periodic pension plans benefit $ (482) $ (2,591)
Schedule of Changes in Projected Benefit Obligations	The status of the Pension Plans was as follows: Year Ended December 31, 2019 2018 Change in projected benefit obligation: Projected benefit obligation at beginning of period $ 148,479 $ 157,427 Service cost 357 434 Interest cost 5,233 4,858 Benefit payments (12,380) (10,959) Actuarial loss (gain) 16,054 (3,631) Plan amendment resulting from change in collective bargaining agreement — 350 Projected benefit obligation at end of period $ 157,743 $ 148,479 Change in plan assets: Fair value of plan assets at beginning of period $ 145,065 $ 162,758 Actual return on assets 24,933 (7,105) Employer contributions 384 371 Benefit payments (12,380) (10,959) Fair value of plan assets at end of period $ 158,002 $ 145,065 Funded status – net asset (liability) $ 259 $ (3,414) Amounts recognized in the consolidated balance sheets consist of: Prepaid pension cost $ 5,758 $ 1,754 Accrued liabilities (390) (389) Pension benefit obligations (5,109) (4,779) Net amount recognized $ 259 $ (3,414) Pre-tax components of accumulated other comprehensive loss: Unrecognized actuarial gain $ 8,568 $ 11,322 Unrecognized prior service cost 298 350 Total $ 8,866 $ 11,672 Accumulated benefit obligation $ 157,698 $ 148,479
Schedule of Assumptions Used	The assumptions used to measure the projected benefit obligations of the Company’s Pension Plans were as follows: Year Ended December 31, 2019 2018 Discount rate 2.99% - 3.11% 4.00% - 4.06% Projected annual salary increases 3.00% 0% The assumptions used to determine net periodic pension cost of the Company’s Pension Plans were as follows: Year Ended December 31, 2019 2018 Discount rate 4.00% - 4.06% 3.51% - 3.58% Expected long-term rate of return on plan assets 5.00% 5.00%
Schedule of Fair Value of Plan Assets	The fair values of the assets of the Company-sponsored qualified pension plan fall within the following levels of the fair value hierarchy as of December 31, 2019: Level 1 Level 2 Level 3 Total Fixed income securities (a) $ 8,925 $ 172,293 $ — $ 181,218 Investments measured at net asset value 8,662 Accounts payable – pending trades (31,878) Total $ 158,002 (a) Fixed income securities are comprised of corporate bonds (72%), government bonds (17%), government agency securities (1%) and other fixed income securities (10%). The fair values of the assets of the Company-sponsored qualified pension plan fall within the following levels of the fair value hierarchy as of December 31, 2018: Level 1 Level 2 Level 3 Total Fixed income securities (b) $ 9,232 $ 136,778 $ — $ 146,010 Investments measured at net asset value 7,323 Accounts payable – pending trades (8,268) Total $ 145,065
Schedule of Expected Benefit Payments	The estimated future pension benefit payments are: 2020 $ 11,900 2021 10,810 2022 10,770 2023 10,180 2024 10,180 2024 — 2028 48,930
Other Postretirement Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Components of the Net Periodic Pension and Postretirement Benefit Cost	Components of net periodic postretirement plan benefit were as follows: Year Ended December 31, 2019 2018 Service cost $ 67 $ 35 Interest cost 56 41 Amortization of prior service credit (2) — Amortization of actuarial loss 42 — Net periodic postretirement plan cost $ 163 $ 76
Schedule of Changes in Projected Benefit Obligations	The status of the postretirement plan was as follows: Year Ended December 31, 2019 2018 Change in accumulated postretirement benefit obligations: Accumulated postretirement benefit obligation at beginning of period $ 1,627 $ 1,438 Service cost 67 35 Interest cost 56 41 Benefit payments (22) (426) Actuarial loss 32 556 Contribution change per collective bargaining agreement — (17) Accumulated postretirement benefit obligation at end of period $ 1,760 $ 1,627 Funded status – net liability $ (1,760) $ (1,627) Amounts recognized in the consolidated balance sheets consist of: Accrued liabilities $ (160) $ (85) Postretirement benefit obligations (1,600) (1,542) Net amount recognized $ (1,760) $ (1,627) Pre-tax components of accumulated other comprehensive loss: Unrecognized prior service cost $ (15) $ (17) Unrecognized actuarial loss 548 558 Total $ 533 $ 541
Schedule of Assumptions Used	The weighted average discount rate used to determine the net periodic postretirement benefit costs and the accumulated postretirement benefit obligations were as follows: Year Ended December 31, 2019 2018 Net periodic postretirement benefit costs 3.90% 3.45% Accumulated postretirement benefit obligations 2.92% 3.90%
Schedule of Assumed Health Care Cost and Trend Rates for Medical Plans	The assumed health care cost trend rates for medical plans were as follows: Year Ended December 31, 2019 2018 Medical cost trend rate 6.75% 7.00% Ultimate medical cost trend rate 4.50% 4.50% Year ultimate medical cost trend rate will be reached 2030 2027

Income Taxes - (Tables)

Income Taxes - (Tables)	12 Months Ended
Income Taxes - (Tables)	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Schedule of (Loss) Income before Income Tax, Domestic and Foreign	The components of (loss) income before income taxes were as follows: Year Ended December 31, 2019 2018 Domestic $ (49,024) $ (48,194) Foreign 5,610 6,270
Schedule of Components of Income Tax (Benefit) Expense	The income taxes benefit consisted of the following components: Year Ended December 31, 2019 2018 Federal current $ (99) $ (413) deferred (4,834) (5,000) State current (116) 296 deferred (1,189) (1,761) Foreign current 1,307 1,986 deferred 32 113 $ (4,899) $ (4,779)
Schedule of Effective Income Tax Rate Reconciliation	The items accounting for differences between the income tax benefit computed at the federal statutory rate and the provision for income taxes were as follows: Year Ended December 31, 2019 2018 Federal income tax at statutory rates $ (9,117) $ (8,804) State income taxes, net of federal income tax benefits (2,249) (1,536) Permanent items: Foreign inclusions 1,104 369 Other permanent differences 585 804 Rate differential on foreign income 262 452 Valuation allowance 3,667 (40,849) Provision to return adjustments 182 2,910 Net operating loss ("NOL") carryforward asset limitation — 41,767 Other 667 108 Income tax benefit $ (4,899) $ (4,779) Effective income tax benefit rate 11.3 % 11.4 %
Schedule of Deferred Tax Assets and Liabilities	Significant components of deferred tax assets and liabilities are as follows: December 31, 2019 2018 Deferred tax assets: Pension and postretirement benefits $ 1,208 $ 2,111 Deferred compensation 973 1,452 Restructuring related and other reserves 6 4 Operating lease liabilities 10,314 — Alternative minimum tax and net operating loss carryforward 19,529 11,227 Inventory 4,161 5,223 Intangible assets and goodwill 4,744 5,561 Other, net 1,741 1,841 Deferred tax assets before valuation allowance 42,676 27,419 Valuation allowance (14,344) (10,842) Total deferred tax assets $ 28,332 $ 16,577 Deferred tax liabilities: Depreciation $ 4,394 $ 5,372 Operating right-of-use asset 10,300 — Excess of book basis over tax basis in investments 318 225 Convertible debt discount 15,140 16,834 Other, net 421 425 Total deferred tax liabilities 30,573 22,856 Net deferred tax liabilities $ (2,241) $ (6,279)
Summary of Valuation Allowance	Activity in the Company's valuation allowances for the U.S. and non-U.S. operations were as follows: Year Ended December 31, 2019 2018 Domestic Balance, beginning of period $ 2,271 $ 43,037 Provision charged to expense 3,949 — Reduction due to Section 382 limitations — (40,766) Provision charged to discontinued operations and other comprehensive income (92) — Balance, end of period $ 6,128 $ 2,271 Foreign Balance, beginning of period $ 8,571 $ 9,116 Impact of foreign exchange on beginning of period balance 240 (437) Provision charged to expense (595) (108) Balance, end of period $ 8,216 $ 8,571

Segment Reporting - (Tables)

Segment Reporting - (Tables)	12 Months Ended
Segment Reporting - (Tables)	Dec. 31, 2019
Segment Reporting [Abstract]
Geographic Schedule of Revenue and Long-lived Assets	Company-wide geographic data is as follows: Year Ended December 31, 2019 2018 Net sales United States $ 360,748 $ 379,155 Canada 42,468 47,454 Mexico 49,915 62,431 France 53,644 50,900 China 34,897 25,288 All other countries 17,919 16,742 Total $ 559,591 $ 581,970 December 31, 2019 2018 Long-lived assets United States $ 38,482 $ 43,698 Canada 2,508 2,579 Mexico 3,233 3,549 France 1,961 2,162 China 374 384 All other countries 881 828 Total $ 47,439 $ 53,200

Guarantor Financial Informati_2

Guarantor Financial Information (Tables)	12 Months Ended
Guarantor Financial Information (Tables)	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Condensed Consolidated Statements of Operations and Comprehensive Loss	Condensed Consolidated Statements of Operations and Comprehensive Loss For the year ended December 31, 2019 Parent Guarantors Non-Guarantors Eliminations Consolidated Net sales $ 361,232 $ 92,576 $ 106,528 $ (745) $ 559,591 Costs and expenses: Cost of materials (exclusive of depreciation) 257,387 73,347 88,817 (745) 418,806 Warehouse, processing and delivery expense 59,569 11,152 6,846 — 77,567 Sales, general and administrative expense 53,467 4,782 6,308 — 64,557 Depreciation expense 7,128 982 649 — 8,759 Total costs and expenses 377,551 90,263 102,620 (745) 569,689 Operating (loss) income (16,319) 2,313 3,908 — (10,098) Interest expense, net 38,792 1,076 34 — 39,902 Other income, net (6,085) (1,173) 672 — (6,586) (Loss) income before income taxes (49,026) 2,410 3,202 — (43,414) Income tax (benefit) expense (5,894) 236 759 — (4,899) Equity in earnings of subsidiaries (4,617) — — 4,617 — Net (loss) income $ (38,515) $ 2,174 $ 2,443 $ (4,617) $ (38,515) Comprehensive (loss) income $ (37,541) $ 1,075 $ 2,434 $ (3,509) $ (37,541) Condensed Consolidated Statements of Operations and Comprehensive Loss For the year ended December 31, 2018 Parent Guarantors Non-Guarantors Eliminations Consolidated Net sales $ 379,213 $ 109,922 $ 92,934 $ (99) $ 581,970 Costs and expenses: Cost of materials (exclusive of depreciation) 274,037 84,970 78,144 (99) 437,052 Warehouse, processing and delivery expense 63,660 12,807 7,168 — 83,635 Sales, general and administrative expense 58,352 4,762 5,819 — 68,933 Depreciation expense 7,462 922 698 — 9,082 Total costs and expenses 403,511 103,461 91,829 (99) 598,702 Operating (loss) income (24,298) 6,461 1,105 — (16,732) Interest expense, net 31,787 1,061 324 — 33,172 Other income, net (7,894) 1,970 (2,056) — (7,980) (Loss) income before income taxes (48,191) 3,430 2,837 — (41,924) Income tax (benefit) expense (6,714) 1,593 342 — (4,779) Equity in earnings of subsidiaries (4,332) — — 4,332 — Net (loss) income $ (37,145) $ 1,837 $ 2,495 $ (4,332) $ (37,145) Comprehensive (loss) income $ (48,824) $ 2,082 $ (242) $ (1,840) $ (48,824)
Condensed Consolidating Balance Sheet	Condensed Consolidating Balance Sheet Parent Guarantors Non-Guarantors Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 1,000 $ 2,295 $ 3,138 $ — $ 6,433 Accounts receivable, less allowance for doubtful accounts 43,321 16,147 15,229 — 74,697 Inventories 95,252 26,154 23,005 — 144,411 Prepaid expenses and other current assets 4,074 4,190 3,399 — 11,663 Total current assets 143,647 48,786 44,771 — 237,204 Goodwill and intangible assets 8,176 — — — 8,176 Operating right-of-use assets 18,825 6,259 4,339 — 29,423 Other non-current assets 8,362 234 (512) — 8,084 Investment in subsidiaries 95,599 — — (95,599) — Receivables from affiliates 60,388 60,547 8,551 (129,486) — Property, plant and equipment, net 38,483 5,741 3,215 — 47,439 Total assets $ 373,480 $ 121,567 $ 60,364 $ (225,085) $ 330,326 Liabilities and Stockholders’ (Deficit) Equity Current liabilities: Accounts payable $ 32,280 $ 5,800 $ 3,665 $ — $ 41,745 Other current liabilities 12,615 4,231 2,048 — 18,894 Short-term borrowings — — 2,888 — 2,888 Total current liabilities 44,895 10,031 8,601 — 63,527 Long-term debt, less current portion 263,523 — — — 263,523 Payables due to affiliates 69,098 48,174 12,214 (129,486) — Deferred income taxes 3,637 — 138 — 3,775 Non-current operating lease liabilities 15,590 3,894 3,276 — 22,760 Other non-current liabilities 17,807 — 4 — 17,811 Stockholders’ (deficit) equity (41,070) 59,468 36,131 (95,599) (41,070) Total liabilities and stockholders’ (deficit) equity $ 373,480 $ 121,567 $ 60,364 $ (225,085) $ 330,326 Condensed Consolidating Balance Sheet Parent Guarantors Non-Guarantors Eliminations Consolidated Assets Current assets: Cash and cash equivalents $ 3,079 $ 4,030 $ 1,559 $ — $ 8,668 Accounts receivable, less allowance for doubtful accounts 44,327 18,754 16,676 — 79,757 Receivables from affiliates 7 — — (7) — Inventories 104,882 28,191 27,613 — 160,686 Prepaid expenses and other current assets 6,263 6,205 3,144 — 15,612 Total current assets 158,558 57,180 48,992 (7) 264,723 Goodwill and intangible assets 8,176 — — — 8,176 Other non-current assets 3,789 188 316 — 4,293 Investment in subsidiaries 92,065 — — (92,065) — Receivables from affiliates 68,169 60,547 4,954 (133,670) — Property, plant and equipment, net 43,698 6,128 3,374 — 53,200 Total assets $ 374,455 $ 124,043 $ 57,636 $ (225,742) $ 330,392 Liabilities and Stockholders’ (Deficit) Equity Current liabilities: Accounts payable $ 31,802 $ 6,014 $ 4,903 $ — $ 42,719 Payables due to affiliates — 7 — (7) — Other current liabilities 13,484 4,171 684 — 18,339 Short-term borrowings — — 5,498 — 5,498 Total current liabilities 45,286 10,192 11,085 (7) 66,556 Long-term debt, less current portion 245,966 — — — 245,966 Payables due to affiliates 65,502 55,412 12,756 (133,670) — Deferred income taxes 7,421 — 119 — 7,540 Other non-current liabilities 19,641 44 6 — 19,691 Stockholders’ (deficit) equity (9,361) 58,395 33,670 (92,065) (9,361) Total liabilities and stockholders’ (deficit) equity $ 374,455 $ 124,043 $ 57,636 $ (225,742) $ 330,392
Condensed Consolidating Statement of Cash Flows	Condensed Consolidating Statement of Cash Flows Parent Guarantors Non-Guarantors Eliminations Consolidated Operating activities: Net (loss) income $ (38,515) $ 2,174 $ 2,443 $ (4,617) $ (38,515) Equity in earnings of subsidiaries (4,617) — — 4,617 — Adjustments to reconcile net (loss) income to net cash from (used in) operating activities 38,892 4,113 6,334 — 49,339 Net cash from (used in) operating activities (4,240) 6,287 8,777 — 10,824 Investing activities: Capital expenditures (2,154) (1,337) (530) — (4,021) Proceeds from sale of property, plant and equipment 8 434 — — 442 Net advances to subsidiaries 11,377 — — (11,377) — Net cash used in investing activities 9,231 (903) (530) (11,377) (3,579) Financing activities: Proceeds from long-term debt including credit facilities 3,500 — — — 3,500 Repayments of long-term debt including credit facilities (9,988) — — — (9,988) Net intercompany (repayments) borrowings — (7,238) (4,139) 11,377 — Other financing (582) — (2,490) — (3,072) Net cash (used in) from financing activities (7,070) (7,238) (6,629) 11,377 (9,560) Effect of exchange rate changes on cash and cash equivalents — 119 (39) — 80 Net change in cash and cash equivalents (2,079) (1,735) 1,579 — (2,235) Cash and cash equivalents—beginning of year 3,079 4,030 1,559 — 8,668 Cash and cash equivalents—end of year $ 1,000 $ 2,295 $ 3,138 $ — $ 6,433 Condensed Consolidating Statement of Cash Flows Parent Guarantors Non-Guarantors Eliminations Consolidated Operating activities: Net (loss) income $ (37,145) $ 1,837 $ 2,495 $ (4,332) $ (37,145) Equity in earnings of subsidiaries (4,332) — — 4,332 — Adjustments to reconcile net (loss) income to net cash (used in) from operating activities 17,961 (416) (4,181) — 13,364 Net cash (used in) from operating activities (23,516) 1,421 (1,686) — (23,781) Investing activities: Capital expenditures (4,130) (848) (709) — (5,687) Proceeds from sale of property, plant and equipment 8 — 69 — 77 Net advances to subsidiaries 392 — — (392) — Net cash from (used in) investing activities (3,730) (848) (640) (392) (5,610) Financing activities: Proceeds from long-term debt including credit facilities 49,954 — — — 49,954 Repayments of long-term debt including credit facilities (21,130) — — — (21,130) Net intercompany (repayments) borrowings — 58 (450) 392 — Other financing (1,396) — (115) — (1,511) Net cash from (used in) financing activities 27,428 58 (565) 392 27,313 Effect of exchange rate changes on cash and cash equivalents — (261) (97) — (358) Net change in cash and cash equivalents 182 370 (2,988) — (2,436) Cash and cash equivalents—beginning of year 2,897 3,660 4,547 — 11,104 Cash and cash equivalents—end of year $ 3,079 $ 4,030 $ 1,559 $ — $ 8,668

Basis of Presentation and Sig_4

Basis of Presentation and Significant Accounting Policies - Narrative (Details) $ / shares in Units, shares in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)Service_Center$ / sharesshares	Dec. 31, 2018USD ($)	Jan. 01, 2019USD ($)
Accounting Policies [Line Items]
Service centers \| Service_Center	19
Warehouse, processing and delivery expenses	$ 23,807,000	$ 26,704,000
Original maturity cash and equivalents	90 days
Depreciation	$ 8,759,000	9,082,000
Goodwill	2,676,000	2,676,000
Goodwill impairment	0
Impairment charges related to indefinite-lived intangible assets	0
Undistributed earnings of foreign subsidiaries	0
Uncertain tax positions	0
Accrued interest and penalties associated with unrecognized tax benefits	0
Operating right-of-use assets	29,423,000
Total lease obligations	29,297,000
Cumulative effect from adoption of the new lease standard (Leases: Topic 842) (Note 1)			$ 246,000
Trade name
Accounting Policies [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	$ 5,500,000	$ 5,500,000
Convertible Debt Securities \| 5.25% Convertible Notes due December 30, 2019
Accounting Policies [Line Items]
Earnings per share for dilutive shares (in dollars per share) \| $ / shares	$ 3.77
Potentially dilutive shares (in shares) \| shares	51,400
Maximum
Accounting Policies [Line Items]
Percentage of revenue recognized at time of shipment (less than)	1.00%	1.00%
Maximum \| Customer Concentration Risk
Accounting Policies [Line Items]
Concentration of sales (as a percent)	5.00%	5.00%
North America
Accounting Policies [Line Items]
Service centers \| Service_Center	15
Europe
Accounting Policies [Line Items]
Service centers \| Service_Center	2
Asia
Accounting Policies [Line Items]
Service centers \| Service_Center	2
United States \| Geographic Concentration Risk
Accounting Policies [Line Items]
Concentration of sales (as a percent)	64.00%	65.00%
Accounting Standards Update 2016-02
Accounting Policies [Line Items]
Operating right-of-use assets			35,508,000
Total lease obligations			35,470,000
Cumulative effect from adoption of the new lease standard (Leases: Topic 842) (Note 1)			$ 246,000

Basis of Presentation and Sig_5

Basis of Presentation and Significant Accounting Policies - Allowance for Doubtful Accounts Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance, beginning of period	$ 1,364	$ 1,586
Add Provision charged to expense	472	379
Recoveries	19	44
Less Charges against allowance	(89)	(645)
Balance, end of period	$ 1,766	$ 1,364

Basis of Presentation and Sig_6

Basis of Presentation and Significant Accounting Policies - Non-Cash Investing and Financing Activities and Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Non-cash investing and financing activities:
Capital expenditures financed by accounts payable	$ 27	$ 115
Reclassification of interest paid in kind to additional paid in capital (Note 5)	3,547	3,430
Cash paid during the period for:
Interest	7,075	5,110
Income taxes	1,647	866
Cash received during the period for:
Income tax refunds	$ 952	$ 37

Basis of Presentation and Sig_7

Basis of Presentation and Significant Accounting Policies - Excess and Obsolete Inventory Allowance Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Inventory Adjustments [Roll Forward]
Balance, beginning of period	$ 3,274	$ 1,680
Adjustments to provision	1,967	3,612
Charges against allowance	(1,085)	(2,018)
Balance, end of period	$ 4,156	$ 3,274

Basis of Presentation and Sig_8

Basis of Presentation and Significant Accounting Policies - Estimated Useful Lives of Plant and Equipment (Details)	12 Months Ended
	Dec. 31, 2019
Buildings and building improvements \| Minimum
Property, Plant and Equipment [Line Items]
Useful lives	5 years
Buildings and building improvements \| Maximum
Property, Plant and Equipment [Line Items]
Useful lives	40 years
Plant equipment \| Minimum
Property, Plant and Equipment [Line Items]
Useful lives	5 years
Plant equipment \| Maximum
Property, Plant and Equipment [Line Items]
Useful lives	20 years
Furniture and fixtures \| Minimum
Property, Plant and Equipment [Line Items]
Useful lives	2 years
Furniture and fixtures \| Maximum
Property, Plant and Equipment [Line Items]
Useful lives	10 years
Vehicles and office equipment \| Minimum
Property, Plant and Equipment [Line Items]
Useful lives	3 years
Vehicles and office equipment \| Maximum
Property, Plant and Equipment [Line Items]
Useful lives	10 years

Basis of Presentation and Sig_9

Basis of Presentation and Significant Accounting Policies - Basic and Diluted Earnings Per Share Calculations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net loss	$ (38,515)	$ (37,145)
Denominator:
Weighted average common shares outstanding	2,186	2,000
Effect of dilutive securities:
Outstanding common stock equivalents (in shares)	0	0
Denominator for diluted (loss) earnings per share (in shares)	2,186	2,000
Net basic loss earnings per common share (in dollars per share)	$ (17.62)	$ (18.57)
Net diluted loss earnings per common share (in dollars per share)	$ (17.62)	$ (18.57)
Excluded outstanding share-based awards having an anti-dilutive effect (in shares)	1,429	1,803

Debt - Long-term Debt (Details)

Debt - Long-term Debt (Details) - USD ($) $ in Thousands	7 Months Ended	12 Months Ended		16 Months Ended	19 Months Ended	28 Months Ended
Debt - Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2019	Aug. 31, 2017
Debt Instrument [Line Items]
Finance leases, less current portion	$ 61		$ 61	$ 61
Less: unamortized discount	(64,491)	$ (57,313)	(64,491)	(64,491)	$ (57,313)	$ (57,313)
Less: unamortized debt issuance costs	(422)	(289)	(422)	(422)	(289)	(289)
Total long-term debt	245,966	263,523	245,966	245,966	263,523	263,523
Less: current portion of long-term debt	0	0	0	0	0	0
Total long-term portion	245,966	263,523	245,966	245,966	$ 263,523	$ 263,523
Paid-in-Kind Interest		$ 15,912	13,502
5.25% Convertible Notes due December 30, 2019
Debt Instrument [Line Items]
Stated interest rate (as a percent)		12.00%			12.00%	12.00%
5.00% / 7.00% Second Lien Notes due August 31, 2022(a)
Debt Instrument [Line Items]
Convertible debt	180,894	$ 193,660	180,894	180,894	$ 193,660	$ 193,660
Paid-in-Kind Interest				15,992		$ 28,991
5.00% / 7.00% Second Lien Notes due August 31, 2022(a) \| Minimum
Debt Instrument [Line Items]
Stated interest rate (as a percent)		5.00%			5.00%	5.00%
5.00% / 7.00% Second Lien Notes due August 31, 2022(a) \| Maximum
Debt Instrument [Line Items]
Stated interest rate (as a percent)		7.00%			7.00%	7.00%
Less: unvested restricted Notes
Debt Instrument [Line Items]
Less: unvested restricted Second Lien Notes	(1,378)	$ (323)	(1,378)	(1,378)	$ (323)	$ (323)
Line of Credit \| Floating rate Revolving A Credit Facility due February 28, 2022
Debt Instrument [Line Items]
Line of credit	108,488	102,000	108,488	108,488	102,000	102,000
Line of Credit \| 12.00% Revolving B Credit Facility due February 28, 2022(b)
Debt Instrument [Line Items]
Line of credit	22,875	25,788	22,875	22,875	25,788	25,788
Total long-term debt	22,875	$ 25,788	$ 22,875	$ 22,875	$ 25,788	$ 25,788
Stated interest rate (as a percent)		12.00%			12.00%	12.00%
Paid-in-Kind Interest	$ 1,375	$ 2,913			$ 4,288
A.M. Castle & Co. 2017 Management Incentive Plan \| Less: unvested restricted Notes
Debt Instrument [Line Items]
Convertible debt		$ 2,300			$ 2,300	$ 2,300	$ 2,400

Debt - Narrative (Details)

Debt - Narrative (Details)	Aug. 31, 2017USD ($)subsidiary	Dec. 31, 2018USD ($)	May 31, 2020	Dec. 31, 2019USD ($)Day$ / shares	Dec. 31, 2018USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2019USD ($)$ / shares	Dec. 31, 2019USD ($)$ / shares	Dec. 31, 2019EUR (€)	Jun. 01, 2018USD ($)
Debt Instrument [Line Items]
Number of subsidiaries \| subsidiary	4
Unamortized debt issuance costs		$ 422,000		$ 289,000	$ 422,000	$ 422,000	$ 289,000	$ 289,000
Reclassification of debt to equity, tax effect				1,086,000
Conversion of convertible notes				3,547,000	3,430,000
Noncash interest paid in kind				15,912,000	13,502,000
5.00% / 7.00% Second Lien Notes due August 31, 2022(a)
Debt Instrument [Line Items]
Convertible debt		180,894,000		$ 193,660,000	180,894,000	180,894,000	$ 193,660,000	193,660,000
Redemption Price on Second Lien Notes				100.00%
Noncash interest paid in kind						15,992,000		$ 28,991,000
5.00% / 7.00% Second Lien Notes due August 31, 2022(a) \| Minimum
Debt Instrument [Line Items]
Stated interest rate (as a percent)				5.00%			5.00%	5.00%	5.00%
5.00% / 7.00% Second Lien Notes due August 31, 2022(a) \| Maximum
Debt Instrument [Line Items]
Stated interest rate (as a percent)				7.00%			7.00%	7.00%	7.00%
Convertible Debt \| 5.00% / 7.00% Second Lien Notes due August 31, 2022(a)
Debt Instrument [Line Items]
Aggregate principal amount	$ 164,902,000
Debt term				5 years
Debt conversion price (in dollars per share) \| $ / shares				$ 3.77			$ 3.77	$ 3.77
Principal amount for conversion price calculation				$ 1			$ 1	$ 1
Percentage of voting power acquired by a person or group				50.00%			50.00%	50.00%	50.00%
Trading days observation period \| Day				20
Noncash interest paid in kind				$ 12,999,000	12,127,000
Convertible Debt \| 5.00% / 7.00% Second Lien Notes due August 31, 2022(a) \| Minimum
Debt Instrument [Line Items]
Stated interest rate (as a percent)				5.00%			5.00%	5.00%	5.00%
Convertible Debt \| 5.00% / 7.00% Second Lien Notes due August 31, 2022(a) \| Maximum
Debt Instrument [Line Items]
Stated interest rate (as a percent)				7.00%			7.00%	7.00%	7.00%
Line of Credit \| Floating rate Revolving A Credit Facility due February 28, 2022
Debt Instrument [Line Items]
Line of credit		108,488,000		$ 102,000,000	108,488,000	108,488,000	$ 102,000,000	$ 102,000,000
Line of Credit \| Revolving A Credit Facility \| LIBOR
Debt Instrument [Line Items]
Interest rate margin (as a percent)				3.00%
Line of Credit \| Revolving B Credit Facility
Debt Instrument [Line Items]
Stated interest rate (as a percent)				12.00%			12.00%	12.00%	12.00%
Noncash interest paid in kind		1,375,000		$ 2,913,000			$ 4,288,000
Line of credit		22,875,000		25,788,000	22,875,000	22,875,000	25,788,000	$ 25,788,000
Foreign Line of Credit
Debt Instrument [Line Items]
Line of credit capacity \| €									€ 6,500,000
Line of credit		$ 5,498,000		$ 2,888,000	5,498,000	$ 5,498,000	$ 2,888,000	$ 2,888,000
Percent of eligible accounts factored for credit facility borrowing				100.00%
Factoring fee percentage				0.16%
Foreign Line of Credit \| Euribor
Debt Instrument [Line Items]
Interest rate margin (as a percent)				1.00%
Foreign Line of Credit \| LIBOR
Debt Instrument [Line Items]
Interest rate margin (as a percent)				1.00%
Additional Paid-in Capital
Debt Instrument [Line Items]
Reclassification of debt to equity, tax effect					1,208,000
Conversion of convertible notes				$ 3,547,000	$ 3,430,000
Scenario, Forecast \| Line of Credit \| Floating rate Revolving A Credit Facility due February 28, 2022
Debt Instrument [Line Items]
Fee for early termination or payment reduction (as a percentage)			0.25%
Revolving Credit Facility \| Line of Credit \| Floating rate Revolving A Credit Facility due February 28, 2022
Debt Instrument [Line Items]
Line of credit capacity	125,000,000
Commitment fee on unused capacity (as a percent)				0.25%
Average daily revolving facility threshold (as a percent)				50.00%
Interest rate during period (as a percent)				5.32%
Fixed charge ratio				1			1	1	1
Covenant borrowing threshold				$ 12,500,000
Revolving Credit Facility \| Line of Credit \| Floating rate Revolving A Credit Facility due February 28, 2022 \| Maximum
Debt Instrument [Line Items]
Commitment fee on unused capacity (as a percent)				0.375%
Revolving Credit Facility \| Line of Credit \| Revolving B Credit Facility
Debt Instrument [Line Items]
Line of credit capacity										$ 25,000,000
A.M. Castle & Co. 2017 Management Incentive Plan \| Less: unvested restricted Notes
Debt Instrument [Line Items]
Convertible debt	$ 2,400,000			$ 2,300,000			$ 2,300,000	$ 2,300,000

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	$ 263,523	$ 245,966
Convertible Debt \| 5.00% / 7.00% Second Lien Notes due August 31, 2022(a)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt	136,085	174,063
Long-term debt	193,660	180,894
Line of Credit \| Revolving B Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt	25,082	22,124
Long-term debt	$ 25,788	$ 22,875

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Valuation Assumptions used in Determining Fair Value (Details) - Convertible Debt - 5.00% / 7.00% Second Lien Notes due August 31, 2022(a) - Level 3	Dec. 31, 2019
Measurement Input, Risk Free Interest Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Instrument, Measurement Input	0.0161
Measurement Input, Credit Spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Instrument, Measurement Input	0.2286
Measurement Input, Control Premium
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Instrument, Measurement Input	0.0200
Measurement Input, Price Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Instrument, Measurement Input	0.5000

Lease Agreements - Lease-relate

Lease Agreements - Lease-related assets and liabilities (Details) $ in Thousands	Dec. 31, 2019USD ($)
ASSETS
Operating lease assets	$ 29,423
Finance lease assets	10,293
Total lease assets	39,716
Current
Operating	6,537
Finance	596
Noncurrent
Operating	22,760
Finance	8,208
Total liabilities	$ 38,101
Weighted average remaining lease term (years)
Operating leases	5 years 6 months
Finance leases	10 years 10 months 24 days
Weighted average discount rate
Operating leases	5.20%
Finance leases	4.70%

Lease Agreements - Lease relate

Lease Agreements - Lease related expenses (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Finance lease expense:
Amortization of finance lease assets	$ 1,046
Interest on finance lease liabilities	424
Operating lease expense	8,551
Variable lease expense	612
Short-term lease expense	34
Sublease Income	(744)
Total lease expense	$ 9,923

Lease Agreements - Supplemental

Lease Agreements - Supplemental cash flow information related to leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$ (8,633)
Operating cash for finance leases	(424)
Financing cash flows for finance leases	(611)
Lease obligations obtained in exchange for right-of-use assets:
Operating leases	$ 1,713

Lease Agreements - Finance and

Lease Agreements - Finance and Operating Lease Maturity Schedules (Details) $ in Thousands	Dec. 31, 2019USD ($)
Finance Leases
2020	$ 991
2021	955
2022	975
2023	992
2024	1,012
Later years	6,365
Total lease payments	11,290
Less: imputed interest	(2,486)
Total lease obligations	8,804
Operating Leases
2020	7,716
2021	7,042
2022	6,010
2023	4,860
2024	2,176
Later years	5,866
Total lease payments	33,670
Less: imputed interest	(4,373)
Total lease obligations	$ 29,297

Lease Agreements - Future Minim

Lease Agreements - Future Minimum Rental Payments for Operating and Capital Leases under ASC 840 (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Finance Leases
2019	$ 119
2020	56
2021	2
2022	2
2023	1
Later years	0
Total future minimum rental payments	180
Operating Leases
2019	7,882
2020	7,398
2021	6,414
2022	5,702
2023	4,828
Later years	8,068
Total future minimum rental payments	40,292
Built-to-Suit Lease
2019	915
2020	933
2021	952
2022	971
2023	990
Later years	7,461
Total future minimum rental payments	12,222
Rental payments charged to expense	$ 8,377

Stockholders' Equity - Narrativ

Stockholders' Equity - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Conversion of convertible notes	$ 3,547	$ 3,430
Reclassification of debt to equity, tax effect	1,086
Additional Paid-in Capital
Derivative Instruments, Gain (Loss) [Line Items]
Conversion of convertible notes	$ 3,547	3,430
Reclassification of debt to equity, tax effect		$ 1,208

Stockholders' Equity - Componen

Stockholders' Equity - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Components of accumulated other comprehensive loss
Unrecognized pension and postretirement costs, net of tax	$ (7,071)	$ (9,153)
Foreign currency translation losses, net of tax	(6,303)	(5,195)
Total accumulated other comprehensive loss, net of tax	$ (13,374)	$ (14,348)

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Changes in Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ (9,361)	$ 33,985
Other comprehensive income (loss) before reclassifications, net of tax	882	(11,679)
Amounts reclassified from accumulated other comprehensive loss, net of tax	92	0
Net current period other comprehensive income (loss)	974	(11,679)
Ending Balance	(41,070)	(9,361)
Defined Benefit Pension and Postretirement Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(9,153)	34
Other comprehensive income (loss) before reclassifications, net of tax	1,990	(9,187)
Amounts reclassified from accumulated other comprehensive loss, net of tax	92	0
Net current period other comprehensive income (loss)	2,082	(9,187)
Ending Balance	(7,071)	(9,153)
Foreign Currency Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(5,195)	(2,703)
Other comprehensive income (loss) before reclassifications, net of tax	(1,108)	(2,492)
Amounts reclassified from accumulated other comprehensive loss, net of tax	0	0
Net current period other comprehensive income (loss)	(1,108)	(2,492)
Ending Balance	(6,303)	(5,195)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(14,348)	(2,669)
Ending Balance	$ (13,374)	$ (14,348)

Stockholders' Equity - Reclassi

Stockholders' Equity - Reclassifications From Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period, net of tax(a)	$ (92)	$ 0
Prior service credit
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	2	0
Actuarial loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	(94)	0
Defined Benefit Pension and Postretirement Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	(92)	0
Tax effect	0	0
Total reclassifications for the period, net of tax(a)	$ (92)	$ 0

Share-based Compensation - Narr

Share-based Compensation - Narrative (Details) $ / shares in Units, shares in Thousands	Apr. 25, 2018	Sep. 01, 2017	Dec. 31, 2019USD ($)shares$ / shares	Dec. 31, 2018USD ($)$ / shares	Aug. 31, 2017USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense			$ 2,862,000	$ 2,784,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense			$ 585,000
Weighted average recognition period			9 months 18 days
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of PSUs outstanding (in shares) \| shares			791
Recognized compensation expense related to PSUs			$ 0
A.M. Castle & Co. 2017 Management Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum shares issuable under stock plans (in shares) \| shares			3,952
A.M. Castle & Co. 2017 Management Incentive Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares convertible (in shares) \| shares			610
Cliff vesting period (in years)	1 year	3 years
Unvested grant date fair value (in dollars per share) \| $ / shares			$ 3.13	$ 3.19
Granted (in dollars per share) \| $ / shares			$ 1.77
Performance share unit awards granted (in shares) \| shares			15
Less: unvested restricted Notes \| A.M. Castle & Co. 2017 Management Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Convertible debt			$ 2,300,000		$ 2,400,000
Unrecognized compensation expense			$ 214,000
Second lien note weighted average recognition period			8 months 12 days
Vesting period (in years)			3 years
Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage vesting based defined enterprise value			50.00%
Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage vesting based defined enterprise value			50.00%

Share-based Compensation - Summ

Share-based Compensation - Summary of Activity Related to Restricted Shares (Details) - A.M. Castle & Co. 2017 Management Incentive Plan - Restricted Stock shares in Thousands	12 Months Ended
	Dec. 31, 2019$ / sharesshares
Number of Shares
Beginning balance (in shares) \| shares	1,803
Granted (in shares) \| shares	15
Forfeited (in shares) \| shares	(168)
Vested (in shares) \| shares	(221)
Ending balance (in shares) \| shares	1,429
Expected to vest after December 31, 2019 (in shares) \| shares	1,429
Weighted-Average Grant Date Fair Value
Unvested fair value beginning of period (in dollars per share) \| $ / shares	$ 3.19
Granted (in dollars per share) \| $ / shares	1.77
Forfeited (in dollars per share) \| $ / shares	3.14
Vested (in dollars per share) \| $ / shares	3.52
Unvested fair value end of period (in dollars per share) \| $ / shares	3.13
Expected to vest after December 31, 2019 (in dollars per share) \| $ / shares	$ 3.13

Employee Benefit Plans - Narrat

Employee Benefit Plans - Narrative (Details) - USD ($)	12 Months Ended
Employee Benefit Plans - Narrative (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Multiemployer plans, withdrawal obligation	$ 3,134,000
Multiemployer plans, current withdrawal obligation	240,000
Multiemployer plans, noncurrent withdrawal obligations	2,894,000
Other Postretirement Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Expected amortization of pension prior service cost	$ 2,000
Maximum term of coverage for postretirement benefit plans	3 years
Expected amortization of gain/loss next fiscal year	$ 49,000
Effect of one percentage point increase on accumulated postretirement benefit obligation	57,000
Effect of one percentage point decrease on accumulated postretirement benefit obligation	$ 53,000
Employer matching contribution, allowable matching percentage based on terms of the plan (as a percent)	100.00%
Employer matching contribution (as a percent)	3.00%
Employer matching contribution, allowable matching percentage after initial match (as a percent)	50.00%
Employer matching contribution, after initial match (as a percent)	2.00%
Employer matching contribution, discretionary match	4.00%
Cliff vesting period	2 years
Amounts expensed	$ 1,672,000	$ 2,114,000
Other Postretirement Benefit Plan \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Medical postretirement plans, qualifying retirement age range	62 years
Other Postretirement Benefit Plan \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Medical postretirement plans, qualifying retirement age range	65 years
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Lump sum payout options	$ 3,375,000	1,931,000
Expected amortization of pension prior service cost	52,000
Accumulated benefit obligation in excess of plan assets	5,499,000	148,479,000
Accumulated benefit obligation	5,499,000	148,479,000
Fair value of plan assets	$ 0	$ 145,065,000
Projected annual salary increase (as a percent)	3.00%	0.00%
Expected return on assets	$ (6,124,000)	$ (7,883,000)
Projected amortization of actuarial gains for the next fiscal year	$ 0
Pension Plans \| Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Target portfolio allocation (as a percent)	100.00%
Pension Plans \| Corporate Bond Securities
Defined Benefit Plan Disclosure [Line Items]
Fixed income securities allocation (as a percent)	72.00%	75.00%
Pension Plans \| US Treasury and Government
Defined Benefit Plan Disclosure [Line Items]
Fixed income securities allocation (as a percent)	17.00%	17.00%
Pension Plans \| Agency Securities
Defined Benefit Plan Disclosure [Line Items]
Fixed income securities allocation (as a percent)	1.00%	2.00%
Pension Plans \| Other fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Fixed income securities allocation (as a percent)	10.00%	6.00%

Employee Benefit Plans - Compon

Employee Benefit Plans - Components of the Net Periodic Pension and Postretirement Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Pension Plans
Components of net period pension plans benefit
Service cost	$ 357	$ 434
Interest cost	5,233	4,858
Expected return on assets	(6,124)	(7,883)
Amortization of actuarial loss	52	0
Net periodic pension plans benefit	(482)	(2,591)
Components of net periodic postretirement plan benfit
Service cost	357	434
Interest cost	5,233	4,858
Amortization of actuarial loss	52	0
Net periodic pension plans benefit	(482)	(2,591)
Other Postretirement Benefit Plan
Components of net period pension plans benefit
Service cost	67	35
Interest cost	56	41
Amortization of actuarial loss	42	0
Net periodic pension plans benefit	163	76
Components of net periodic postretirement plan benfit
Service cost	67	35
Interest cost	56	41
Amortization of prior service credit	(2)	0
Amortization of actuarial loss	42	0
Net periodic pension plans benefit	$ 163	$ 76

Employee Benefit Plans - Schedu

Employee Benefit Plans - Schedule of Changes in Projected Benefit Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Change in projected benefit obligation:
Plan amendment resulting from change in collective bargaining agreement	$ 0	$ 350
Amounts recognized in the consolidated balance sheets consist of:
Prepaid pension cost	5,758	1,754
Pension Plans
Change in projected benefit obligation:
Projected benefit obligation at beginning of period	148,479	157,427
Service cost	357	434
Interest cost	5,233	4,858
Benefit payments	(12,380)	(10,959)
Actuarial loss (gain)	16,054	(3,631)
Projected benefit obligation at end of period	157,743	148,479
Change in plan assets:
Fair value of plan assets at beginning of period	145,065	162,758
Actual return on assets	24,933	(7,105)
Employer contributions	384	371
Benefit payments	(12,380)	(10,959)
Fair value of plan assets at end of period	158,002	145,065
Funded status – net asset (liability)	259	(3,414)
Amounts recognized in the consolidated balance sheets consist of:
Prepaid pension cost	5,758	1,754
Accrued liabilities	(390)	(389)
Pension benefit obligations	(5,109)	(4,779)
Net amount recognized	259	(3,414)
Pre-tax components of accumulated other comprehensive loss:
Unrecognized actuarial gain	8,568	11,322
Unrecognized prior service cost	298	350
Total	8,866	11,672
Accumulated benefit obligation	157,698	148,479
Other Postretirement Benefit Plan
Change in projected benefit obligation:
Projected benefit obligation at beginning of period	1,627	1,438
Service cost	67	35
Interest cost	56	41
Benefit payments	(22)	(426)
Actuarial loss (gain)	32	556
Plan amendment resulting from change in collective bargaining agreement	0	(17)
Projected benefit obligation at end of period	1,760	1,627
Change in plan assets:
Funded status – net asset (liability)	(1,760)	(1,627)
Amounts recognized in the consolidated balance sheets consist of:
Accrued liabilities	(160)	(85)
Pension benefit obligations	(1,600)	(1,542)
Net amount recognized	(1,760)	(1,627)
Pre-tax components of accumulated other comprehensive loss:
Unrecognized actuarial gain	548	558
Unrecognized prior service cost	(15)	(17)
Total	$ 533	$ 541

Employee Benefit Plans - Sche_2

Employee Benefit Plans - Schedule of Assumptions Used (Details) - Pension Plans	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Projected annual salary increases	3.00%	0.00%
Expected long-term rate of return on plan assets	5.00%	5.00%
Minimum
Defined Benefit Plan Disclosure [Line Items]
Discount rate (as a percent)	2.99%	4.00%
Discount rate (as a percent)	4.00%	3.51%
Maximum
Defined Benefit Plan Disclosure [Line Items]
Discount rate (as a percent)	3.11%	4.06%
Discount rate (as a percent)	4.06%	3.58%

Employee Benefit Plans - Sche_3

Employee Benefit Plans - Schedule of Fair Value of Plan Assets (Details) - Pension Plans - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Total	$ 158,002	$ 145,065	$ 162,758
Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Fixed income securities	181,218	146,010
Investments measured at net asset value	8,662	7,323
Accounts payable – pending trades	(31,878)	(8,268)
Total	158,002	145,065
Fixed income securities \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fixed income securities	8,925	9,232
Fixed income securities \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fixed income securities	172,293	136,778
Fixed income securities \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fixed income securities	$ 0	$ 0
Corporate Bond Securities
Defined Benefit Plan Disclosure [Line Items]
Fixed income securities allocation (as a percent)	72.00%	75.00%
US Treasury and Government
Defined Benefit Plan Disclosure [Line Items]
Fixed income securities allocation (as a percent)	17.00%	17.00%
Agency Securities
Defined Benefit Plan Disclosure [Line Items]
Fixed income securities allocation (as a percent)	1.00%	2.00%
Other fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Fixed income securities allocation (as a percent)	10.00%	6.00%

Employee Benefit Plans - Sche_4

Employee Benefit Plans - Schedule of Expected Benefit Payments (Details) - Pension Plans $ in Thousands	Dec. 31, 2019USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2020	$ 11,900
2021	10,810
2022	10,770
2023	10,180
2024	10,180
2024-2028	$ 48,930

Employee Benefit Plans - Sche_5

Employee Benefit Plans - Schedule of Assumed Health Care Cost and Trend Rates for Medical Plans (Details) - Other Postretirement Benefit Plan	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Medical cost trend rate (as a percent)	6.75%	7.00%
Ultimate medical cost trend rate (as a percent)	4.50%	4.50%
Year ultimate medical cost trend rate will be reached	2030	2027

Employee Benefit Plans - Weight

Employee Benefit Plans - Weighted Average Discount Rate Used to Determine the Net Periodic Postretirement Benefit Costs (Details) - Other Postretirement Benefit Plan	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Net periodic postretirement benefit costs	3.90%	3.45%
Accumulated postretirement benefit obligations	2.92%	3.90%

Income Taxes - Schedule of (Los

Income Taxes - Schedule of (Loss) Income before Income Tax, Domestic and Foreign (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Domestic and Foreign Income (Loss) before Income Taxes and income (loss) in equity method investments. [Line Items]
(Loss) income before income taxes	$ (43,414)	$ (41,924)
Domestic
Domestic and Foreign Income (Loss) before Income Taxes and income (loss) in equity method investments. [Line Items]
(Loss) income before income taxes	(49,024)	(48,194)
Foreign
Domestic and Foreign Income (Loss) before Income Taxes and income (loss) in equity method investments. [Line Items]
(Loss) income before income taxes	$ 5,610	$ 6,270

Income Taxes - Components of In

Income Taxes - Components of Income Tax (Benefit) Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Federal
current	$ (99)	$ (413)
deferred	(4,834)	(5,000)
State
current	(116)	296
deferred	(1,189)	(1,761)
Foreign
current	1,307	1,986
deferred	32	113
Income tax benefit	$ (4,899)	$ (4,779)

Income Taxes - Effective Income

Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Federal income tax at statutory rates	$ (9,117)	$ (8,804)
State income taxes, net of federal income tax benefits	(2,249)	(1,536)
Permanent items:
Foreign inclusions	1,104	369
Other permanent differences	585	804
Rate differential on foreign income	262	452
Valuation allowance	3,667	(40,849)
Provision to return adjustments	182	2,910
Net operating loss ("NOL") carryforward asset limitation	0	41,767
Other	667	108
Income tax benefit	$ (4,899)	$ (4,779)
Effective income tax (benefit) rate (as a percent)	11.30%	11.40%

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Pension and postretirement benefits	$ 1,208	$ 2,111
Deferred compensation	973	1,452
Restructuring related and other reserves	6	1,841
Operating lease liabilities	10,314
Alternative minimum tax and net operating loss carryforward	19,529	4
Inventory	4,161	5,223
Intangible assets and goodwill	4,744	5,561
Other, net	1,741	11,227
Deferred tax assets before valuation allowance	42,676	27,419
Valuation allowance	(14,344)	(10,842)
Total deferred tax assets	28,332	16,577
Deferred tax liabilities:
Depreciation	4,394	5,372
Excess of book basis over tax basis in investments	318	225
Convertible debt discount	15,140	16,834
Other, net	421	425
Total deferred tax liabilities	30,573	22,856
Net deferred tax liabilities	(2,241)	$ (6,279)
Deferred Tax Liabilities, Leasing Arrangements	$ 10,300

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Tax Credit Carryforward [Line Items]
Income tax benefit, global intangible low-taxed income	$ 1,304
Reclassification of debt to equity, tax effect	1,086
Deferred tax assets before valuation allowance	42,676	$ 27,419
Domestic
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	12,307
Domestic \| Federal AMT
Tax Credit Carryforward [Line Items]
Federal AMT credit	1,005
Foreign
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	33,119
State and Local Jurisdiction
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	10,257
State and Local Jurisdiction \| Federal AMT
Tax Credit Carryforward [Line Items]
Federal AMT credit	$ 546
Additional Paid-in Capital
Tax Credit Carryforward [Line Items]
Reclassification of debt to equity, tax effect		$ 1,208

Income Taxes - Summary of Valua

Income Taxes - Summary of Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of period	$ 10,842
Balance, end of period	14,344	$ 10,842
Domestic
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of period	2,271	43,037
Balance, end of period	6,128	2,271
Foreign
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of period	8,571	9,116
Balance, end of period	8,216	8,571
Provision charged to expense \| Domestic
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Increase (decrease) in valuation allowance	3,949	0
Provision charged to expense \| Foreign
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Increase (decrease) in valuation allowance	(595)	(108)
Net Operating Loss Carryforward \| Domestic
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Increase (decrease) in valuation allowance	0	(40,766)
Provision charged to discontinued operations and other comprehensive income \| Domestic
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Increase (decrease) in valuation allowance	(92)	0
Impact of foreign exchange on beginning of period balance \| Foreign
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Increase (decrease) in valuation allowance	$ 240	$ (437)

Segment Reporting - Narrative (

Segment Reporting - Narrative (Details)	12 Months Ended
Segment Reporting - Narrative (Details)	Dec. 31, 2019Segment
Segment Reporting [Abstract]
Number of reportable segments	1

Segment Reporting - Geographic

Segment Reporting - Geographic Schedule of Revenue and Long-lived Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 559,591	$ 581,970
Long-lived assets	47,439	53,200
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	360,748	379,155
Long-lived assets	38,482	43,698
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	42,468	47,454
Long-lived assets	2,508	2,579
Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	49,915	62,431
Long-lived assets	3,233	3,549
France
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	53,644	50,900
Long-lived assets	1,961	2,162
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	34,897	25,288
Long-lived assets	374	384
All other countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	17,919	16,742
Long-lived assets	$ 881	$ 828

Guarantor Financial Informati_3

Guarantor Financial Information - Additional Information (Details) - Convertible Notes 3.00 % Cash/5..00% PIK Due 2024 - Senior Notes - Subsequent Event	Feb. 24, 2020
Condensed Financial Statements, Captions [Line Items]
Stated interest rate (as a percent)	3.00%
Paid in kind interest rate (as a percent)	5.00%

Condensed Consolidating Stateme

Condensed Consolidating Statement of Operations and Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net sales	$ 559,591	$ 581,970
Costs and Expenses [Abstract]
Cost of materials (exclusive of depreciation)	418,806	437,052
Warehouse, processing and delivery expense	77,567	83,635
Sales, general and administrative expense	64,557	68,933
Depreciation	8,759	9,082
Total costs and expenses	569,689	598,702
Operating (loss) income	(10,098)	(16,732)
Interest expense, net	39,902	33,172
Other income, net	(6,586)	(7,980)
Loss before income taxes	(43,414)	(41,924)
Income tax (benefit) expense	(4,899)	(4,779)
Equity in earnings of subsidiaries	0	0
Net loss	(38,515)	(37,145)
Comprehensive loss	(37,541)	(48,824)
Consolidation, Eliminations
Income Statement [Abstract]
Net sales	(745)	(99)
Costs and Expenses [Abstract]
Cost of materials (exclusive of depreciation)	(745)	(99)
Warehouse, processing and delivery expense	0	0
Sales, general and administrative expense	0	0
Depreciation	0	0
Total costs and expenses	(745)	(99)
Operating (loss) income	0	0
Interest expense, net	0	0
Other income, net	0	0
Loss before income taxes	0	0
Income tax (benefit) expense	0	0
Equity in earnings of subsidiaries	(4,617)	(4,332)
Net loss	(4,617)	(4,332)
Comprehensive loss	(3,509)	(1,840)
Subsidiaries \| Reportable Legal Entities
Income Statement [Abstract]
Net sales	361,232	379,213
Costs and Expenses [Abstract]
Cost of materials (exclusive of depreciation)	257,387	274,037
Warehouse, processing and delivery expense	59,569	63,660
Sales, general and administrative expense	53,467	58,352
Depreciation	7,128	7,462
Total costs and expenses	377,551	403,511
Operating (loss) income	(16,319)	(24,298)
Interest expense, net	38,792	31,787
Other income, net	(6,085)	(7,894)
Loss before income taxes	(49,026)	(48,191)
Income tax (benefit) expense	(5,894)	(6,714)
Equity in earnings of subsidiaries	4,617	4,332
Net loss	(38,515)	(37,145)
Comprehensive loss	(37,541)	(48,824)
Guarantor Subsidiaries \| Reportable Legal Entities
Income Statement [Abstract]
Net sales	92,576	109,922
Costs and Expenses [Abstract]
Cost of materials (exclusive of depreciation)	73,347	84,970
Warehouse, processing and delivery expense	11,152	12,807
Sales, general and administrative expense	4,782	4,762
Depreciation	982	922
Total costs and expenses	90,263	103,461
Operating (loss) income	2,313	6,461
Interest expense, net	1,076	1,061
Other income, net	(1,173)	1,970
Loss before income taxes	2,410	3,430
Income tax (benefit) expense	236	1,593
Equity in earnings of subsidiaries	0	0
Net loss	2,174	1,837
Comprehensive loss	1,075	2,082
Non-Guarantor Subsidiaries \| Reportable Legal Entities
Income Statement [Abstract]
Net sales	106,528	92,934
Costs and Expenses [Abstract]
Cost of materials (exclusive of depreciation)	88,817	78,144
Warehouse, processing and delivery expense	6,846	7,168
Sales, general and administrative expense	6,308	5,819
Depreciation	649	698
Total costs and expenses	102,620	91,829
Operating (loss) income	3,908	1,105
Interest expense, net	34	324
Other income, net	672	(2,056)
Loss before income taxes	3,202	2,837
Income tax (benefit) expense	759	342
Equity in earnings of subsidiaries	0	0
Net loss	2,443	2,495
Comprehensive loss	$ 2,434	$ (242)

Condensed Consolidating Balance

Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 6,433	$ 8,668
Accounts receivable, less allowance for doubtful accounts	74,697	79,757
Receivables from affiliates		0
Inventories	144,411	160,686
Prepaid expenses and other current assets	11,663	15,612
Total current assets	237,204	264,723
Goodwill and intangible assets	8,176	8,176
Other non-current assets	8,084	4,293
Investment in subsidiaries	0	0
Receivables from affiliates	0	0
Property, plant and equipment, net	47,439	53,200
Total assets	330,326	330,392
Current liabilities:
Accounts payable	41,745	42,719
Payables due to affiliates		0
Other current liabilities	18,894	18,339
Short-term borrowings	2,888	5,498
Total current liabilities	63,527	66,556
Long-term debt, less current portion		245,966
Long-term debt, less current portion	263,523	245,966
Payables due to affiliates	0	0
Deferred income taxes	3,775	7,540
Other non-current liabilities	17,811
Other non-current liabilities		19,691
Stockholders’ (deficit) equity	(41,070)	(9,361)	$ 33,985
Total liabilities and stockholders’ deficit	330,326	330,392
Operating right-of-use assets	29,423
Noncurrent operating lease liabilities	22,760
Consolidation, Eliminations
Current assets:
Cash and cash equivalents	0	0
Accounts receivable, less allowance for doubtful accounts	0	0
Receivables from affiliates		(7)
Inventories	0	0
Prepaid expenses and other current assets	0	0
Total current assets	0	(7)
Goodwill and intangible assets	0	0
Other non-current assets	0	0
Investment in subsidiaries	(95,599)	(92,065)
Receivables from affiliates	(129,486)	(133,670)
Property, plant and equipment, net	0	0
Total assets	(225,085)	(225,742)
Current liabilities:
Accounts payable	0	0
Payables due to affiliates		(7)
Other current liabilities	0	0
Short-term borrowings	0	0
Total current liabilities	0	(7)
Long-term debt, less current portion		0
Long-term debt, less current portion	0
Payables due to affiliates	(129,486)	(133,670)
Deferred income taxes	0	0
Other non-current liabilities	0
Other non-current liabilities		0
Stockholders’ (deficit) equity	(95,599)	(92,065)
Total liabilities and stockholders’ deficit	(225,085)	(225,742)
Operating right-of-use assets	0
Noncurrent operating lease liabilities	0
Subsidiaries \| Reportable Legal Entities
Current assets:
Cash and cash equivalents	1,000	3,079
Accounts receivable, less allowance for doubtful accounts	43,321	44,327
Receivables from affiliates		7
Inventories	95,252	104,882
Prepaid expenses and other current assets	4,074	6,263
Total current assets	143,647	158,558
Goodwill and intangible assets	8,176	8,176
Other non-current assets	8,362	3,789
Investment in subsidiaries	95,599	92,065
Receivables from affiliates	60,388	68,169
Property, plant and equipment, net	38,483	43,698
Total assets	373,480	374,455
Current liabilities:
Accounts payable	32,280	31,802
Payables due to affiliates		0
Other current liabilities	12,615	13,484
Short-term borrowings	0	0
Total current liabilities	44,895	45,286
Long-term debt, less current portion		245,966
Long-term debt, less current portion	263,523
Payables due to affiliates	69,098	65,502
Deferred income taxes	3,637	7,421
Other non-current liabilities	17,807
Other non-current liabilities		19,641
Stockholders’ (deficit) equity	(41,070)	(9,361)
Total liabilities and stockholders’ deficit	373,480	374,455
Operating right-of-use assets	18,825
Noncurrent operating lease liabilities	15,590
Guarantor Subsidiaries \| Reportable Legal Entities
Current assets:
Cash and cash equivalents	2,295	4,030
Accounts receivable, less allowance for doubtful accounts	16,147	18,754
Receivables from affiliates		0
Inventories	26,154	28,191
Prepaid expenses and other current assets	4,190	6,205
Total current assets	48,786	57,180
Goodwill and intangible assets	0	0
Other non-current assets	234	188
Investment in subsidiaries	0	0
Receivables from affiliates	60,547	60,547
Property, plant and equipment, net	5,741	6,128
Total assets	121,567	124,043
Current liabilities:
Accounts payable	5,800	6,014
Payables due to affiliates		7
Other current liabilities	4,231	4,171
Short-term borrowings	0	0
Total current liabilities	10,031	10,192
Long-term debt, less current portion		0
Long-term debt, less current portion	0
Payables due to affiliates	48,174	55,412
Deferred income taxes	0	0
Other non-current liabilities	0
Other non-current liabilities		44
Stockholders’ (deficit) equity	59,468	58,395
Total liabilities and stockholders’ deficit	121,567	124,043
Operating right-of-use assets	6,259
Noncurrent operating lease liabilities	3,894
Non-Guarantor Subsidiaries \| Reportable Legal Entities
Current assets:
Cash and cash equivalents	3,138	1,559
Accounts receivable, less allowance for doubtful accounts	15,229	16,676
Receivables from affiliates		0
Inventories	23,005	27,613
Prepaid expenses and other current assets	3,399	3,144
Total current assets	44,771	48,992
Goodwill and intangible assets	0	0
Other non-current assets	(512)	316
Investment in subsidiaries	0	0
Receivables from affiliates	8,551	4,954
Property, plant and equipment, net	3,215	3,374
Total assets	60,364	57,636
Current liabilities:
Accounts payable	3,665	4,903
Payables due to affiliates		0
Other current liabilities	2,048	684
Short-term borrowings	2,888	5,498
Total current liabilities	8,601	11,085
Long-term debt, less current portion		0
Long-term debt, less current portion	0
Payables due to affiliates	12,214	12,756
Deferred income taxes	138	119
Other non-current liabilities	4
Other non-current liabilities		6
Stockholders’ (deficit) equity	36,131	33,670
Total liabilities and stockholders’ deficit	60,364	$ 57,636
Operating right-of-use assets	4,339
Noncurrent operating lease liabilities	$ 3,276

Condensed Consolidating State_2

Condensed Consolidating Statement of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating activities:
Net (loss) income	$ (38,515)	$ (37,145)
Equity in earnings of subsidiaries	0	0
Adjustments to reconcile net (loss) income to net cash (used in) from operating activities	49,339	13,364
Net cash from (used in) operating activities	10,824	(23,781)
Investing activities:
Capital expenditures	(4,021)	(5,687)
Proceeds from sale of property, plant and equipment	442	77
Payments for Advance to Affiliate	0	0
Net cash used in investing activities	(3,579)	(5,610)
Financing activities:
Proceeds from long-term debt including credit facilities	3,500	49,954
Repayments of long-term debt including credit facilities	(9,988)	(21,130)
Net intercompany (repayments) borrowings	0	0
Other financing	(3,072)	(1,511)
Net cash (used in) from financing activities	(9,560)	27,313
Effect of exchange rate changes on cash and cash equivalents	80	(358)
Net change in cash and cash equivalents	(2,235)	(2,436)
Cash and cash equivalents—beginning of year	8,668	11,104
Cash and cash equivalents—end of year	6,433	8,668
Consolidation, Eliminations
Operating activities:
Net (loss) income	(4,617)	(4,332)
Equity in earnings of subsidiaries	4,617	4,332
Adjustments to reconcile net (loss) income to net cash (used in) from operating activities	0	0
Net cash from (used in) operating activities	0	0
Investing activities:
Capital expenditures	0	0
Proceeds from sale of property, plant and equipment	0	0
Payments for Advance to Affiliate	(11,377)	(392)
Net cash used in investing activities	(11,377)	(392)
Financing activities:
Proceeds from long-term debt including credit facilities	0	0
Repayments of long-term debt including credit facilities	0	0
Net intercompany (repayments) borrowings	11,377	392
Other financing	0	0
Net cash (used in) from financing activities	11,377	392
Effect of exchange rate changes on cash and cash equivalents	0	0
Net change in cash and cash equivalents	0	0
Cash and cash equivalents—beginning of year	0	0
Cash and cash equivalents—end of year	0	0
Subsidiaries \| Reportable Legal Entities
Operating activities:
Net (loss) income	(38,515)	(37,145)
Equity in earnings of subsidiaries	(4,617)	(4,332)
Adjustments to reconcile net (loss) income to net cash (used in) from operating activities	38,892	17,961
Net cash from (used in) operating activities	(4,240)	(23,516)
Investing activities:
Capital expenditures	(2,154)	(4,130)
Proceeds from sale of property, plant and equipment	8	8
Payments for Advance to Affiliate	11,377	392
Net cash used in investing activities	9,231	(3,730)
Financing activities:
Proceeds from long-term debt including credit facilities	3,500	49,954
Repayments of long-term debt including credit facilities	(9,988)	(21,130)
Net intercompany (repayments) borrowings	0	0
Other financing	(582)	(1,396)
Net cash (used in) from financing activities	(7,070)	27,428
Effect of exchange rate changes on cash and cash equivalents	0	0
Net change in cash and cash equivalents	(2,079)	182
Cash and cash equivalents—beginning of year	3,079	2,897
Cash and cash equivalents—end of year	1,000	3,079
Guarantor Subsidiaries \| Reportable Legal Entities
Operating activities:
Net (loss) income	2,174	1,837
Equity in earnings of subsidiaries	0	0
Adjustments to reconcile net (loss) income to net cash (used in) from operating activities	4,113	(416)
Net cash from (used in) operating activities	6,287	1,421
Investing activities:
Capital expenditures	(1,337)	(848)
Proceeds from sale of property, plant and equipment	434	0
Payments for Advance to Affiliate	0	0
Net cash used in investing activities	(903)	(848)
Financing activities:
Proceeds from long-term debt including credit facilities	0	0
Repayments of long-term debt including credit facilities	0	0
Net intercompany (repayments) borrowings	(7,238)	58
Other financing	0	0
Net cash (used in) from financing activities	(7,238)	58
Effect of exchange rate changes on cash and cash equivalents	119	(261)
Net change in cash and cash equivalents	(1,735)	370
Cash and cash equivalents—beginning of year	4,030	3,660
Cash and cash equivalents—end of year	2,295	4,030
Non-Guarantor Subsidiaries \| Reportable Legal Entities
Operating activities:
Net (loss) income	2,443	2,495
Equity in earnings of subsidiaries	0	0
Adjustments to reconcile net (loss) income to net cash (used in) from operating activities	6,334	(4,181)
Net cash from (used in) operating activities	8,777	(1,686)
Investing activities:
Capital expenditures	(530)	(709)
Proceeds from sale of property, plant and equipment	0	69
Payments for Advance to Affiliate	0	0
Net cash used in investing activities	(530)	(640)
Financing activities:
Proceeds from long-term debt including credit facilities	0	0
Repayments of long-term debt including credit facilities	0	0
Net intercompany (repayments) borrowings	(4,139)	(450)
Other financing	(2,490)	(115)
Net cash (used in) from financing activities	(6,629)	(565)
Effect of exchange rate changes on cash and cash equivalents	(39)	(97)
Net change in cash and cash equivalents	1,579	(2,988)
Cash and cash equivalents—beginning of year	1,559	4,547
Cash and cash equivalents—end of year	$ 3,138	$ 1,559

Subsequent Events (Details)

Subsequent Events (Details) - Subsequent Event - Convertible Notes 3.00 % Cash/5..00% PIK Due 2024 - Senior Notes	Feb. 24, 2020$ / sharesRate
Subsequent Event [Line Items]
Stated interest rate (as a percent)	3.00%
Paid in kind interest rate (as a percent)	5.00%
Debt conversion price (in dollars per share) \| $ / shares	$ 491.8619000
Debt conversion ratio, (in shares) \| Rate	36325.85%

Uncategorized Items - ctam-2019

Label	Element	Value
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 246,000