Hallador Energy (HNRG) 10-K9 Mar 212020 FY Annual reportFinancial data

Company Profile

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
Document And Entity Information - USD ($)	Dec. 31, 2020	Mar. 04, 2021	Jun. 30, 2020
Document Information [Line Items]
Entity Central Index Key	0000788965
Entity Registrant Name	HALLADOR ENERGY CO
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	001-3473
Entity Incorporation, State or Country Code	CO
Entity Tax Identification Number	84-1014610
Entity Address, Address Line One	1183 East Canvasback Drive
Entity Address, City or Town	Terre Haute
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	47802
City Area Code	812
Local Phone Number	299.2800
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	HNRG
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 13,999,757
Entity Common Stock, Shares Outstanding		30,612,572

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 8,041	$ 8,799
Restricted cash	4,030	4,512
Certificates of deposit	0	245
Accounts receivable	14,414	25,580
Prepaid income taxes	0	1,562
Inventory	24,663	28,297
Parts and supplies	8,903	11,775
Prepaid expenses	3,282	1,678
Total current assets	63,333	82,448
Property, plant and equipment, at cost:
Land and mineral rights	115,853	114,722
Buildings and equipment	352,115	351,614
Mine development	93,635	84,160
Total property, plant and equipment, at cost	561,603	550,496
Less - accumulated DD&A	(252,245)	(220,780)
Total property, plant and equipment, net	309,358	329,716
Investment in Sunrise Energy	3,181	3,139
Other assets	8,258	10,324
Total assets	384,130	425,627
Current liabilities:
Current portion of bank debt, net	34,311	33,044
Current portion of PPP note	5,490	0
Accounts payable and accrued liabilities	31,409	31,800
Total current liabilities	71,210	64,844
Long-term liabilities:
Bank debt, net	97,307	140,594
PPP note	4,510	0
Deferred income taxes	2,824	4,884
Asset retirement obligations	16,177	15,694
Other	2,842	4,081
Total long-term liabilities	123,660	165,253
Total liabilities	194,870	230,097
Redeemable noncontrolling interests	4,000	4,000
Stockholders' equity:
Preferred stock, $.10 par value, 10,000 shares authorized; none issued	0	0
Common stock, $.01 par value, 100,000 shares authorized; 30,610 and 30,420 issued and outstanding, respectively	306	304
Additional paid-in capital	103,399	102,215
Retained earnings	81,555	89,011
Total stockholders’ equity	185,260	191,530
Total liabilities, redeemable noncontrolling interests, and stockholders’ equity	$ 384,130	$ 425,627

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares shares in Thousands	Dec. 31, 2020	Dec. 31, 2019
Preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, shares authorized (in shares)	10,000	10,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000	100,000
Common stock, shares issued (in shares)	30,610	30,420
Common stock, shares outstanding (in shares)	30,610	30,420

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
REVENUE AND OTHER INCOME:
Coal sales		$ 242,084	$ 317,436
Other operating income		3,211	6,026
Total revenue and other income		245,295	323,462
COSTS AND EXPENSES:
Operating costs and expenses		185,957	247,866
DD&A		39,644	48,572
ARO accretion		1,381	1,272
Exploration costs		768	1,225
SG&A		11,594	12,848
Interest	[1]	13,030	15,998
Asset impairment		1,799	77,882
Total costs and expenses		254,173	405,663
LOSS BEFORE INCOME TAXES		(8,878)	(82,201)
Current		(598)	(525)
Deferred		(2,060)	(21,822)
Total income tax benefit		(2,658)	(22,347)
NET LOSS		$ (6,220)	$ (59,854)
NET LOSS PER SHARE:
Basic and diluted (in dollars per share)		$ (0.20)	$ (1.95)
WEIGHTED AVERAGE SHARES OUTSTANDING:
Basic and diluted (in shares)		30,446	30,253
(1) Bank interest		$ 10,653	$ 11,511
Non-cash interest:
Change in interest rate swap valuation		68	2,186
Amortization of debt issuance costs		2,296	2,095
Other		13	206
Total non-cash interest		2,377	4,487
Total interest	[1]	$ 13,030	$ 15,998

[1]	Bank interest

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
OPERATING ACTIVITIES:
Net loss	$ (6,220)	$ (59,854)
Deferred income taxes	(2,060)	(21,822)
Equity (income) loss – Sunrise Energy	(1,054)	527
Cash distribution - Sunrise Energy	1,125	0
DD&A	39,644	48,572
Asset impairment	1,799	77,882
Loss (gain) on sale of assets	38	(90)
Unrealized gain on marketable securities	(14)	(593)
Gain on sale of royalty interests in oil properties	0	(2,949)
Amortization and write off of deferred financing costs	2,296	2,095
Accretion of ARO	1,381	1,272
Stock-based compensation	1,211	1,833
Change in current assets and liabilities:
Accounts receivable	11,166	(7,312)
Inventory	2,893	(8,603)
Parts and supplies	2,872	(2,130)
Prepaid income taxes	1,562	1,044
Accounts payable and accrued liabilities	(1,405)	3,608
Other	(3,048)	2,577
Cash provided by operating activities	52,576	38,243
INVESTING ACTIVITIES:
Capital expenditures	(20,688)	(35,533)
Proceeds from sale of royalty interests in oil properties	0	2,949
Proceeds from sale of equipment	56	134
Proceeds from sale of marketable securities	2,310	2,007
Proceeds from maturities of certificates of deposit	245	245
Investment in Sunrise Energy	(113)	0
Cash used in investing activities	(18,190)	(30,198)
FINANCING ACTIVITIES:
Payments on bank debt	(49,662)	(42,063)
Borrowings of bank debt	7,250	33,750
Proceeds from PPP note	10,000	0
Deferred financing costs	(1,903)	(1,192)
Taxes paid on vesting of RSUs	(75)	(358)
Dividends	(1,236)	(4,965)
Cash used in financing activities	(35,626)	(14,828)
Decrease in cash, cash equivalents, and restricted cash	(1,240)	(6,783)
Cash, cash equivalents, and restricted cash, beginning of year	13,311	20,094
Cash, cash equivalents, and restricted cash, end of year	12,071	13,311
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH:
Cash and cash equivalents	8,041	8,799
Restricted cash	4,030	4,512
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance	12,071	13,311
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest	10,791	11,639
SUPPLEMENTAL NON-CASH FLOW INFORMATION:
Change in capital expenditures included in accounts payable and prepaid expense	1,199	5,849
Right-of-use assets acquired by operating lease	0	800
Interest Rate Swap [Member]
OPERATING ACTIVITIES:
Change in fair value of derivative	68	2,186
Fuel Hedge [Member]
OPERATING ACTIVITIES:
Change in fair value of derivative	$ 322	$ 0

Consolidated Statement of Stock

Consolidated Statement of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2018	30,245
Balance at Dec. 31, 2018	$ 302	$ 100,742	$ 153,830	$ 254,874
Stock-based compensation	$ 0	1,833	0	1,833
Stock issued on vesting of RSUs (in shares)	297
Stock issued on vesting of RSUs	$ 2	(2)	0	0
Taxes paid on vesting of RSUs (in shares)	(122)
Taxes paid on vesting of RSUs	$ 0	(358)	0	(358)
Dividends	0	0	(4,965)	(4,965)
Net income (loss)	$ 0	0	(59,854)	(59,854)
Balance (in shares) at Dec. 31, 2019	30,420
Balance at Dec. 31, 2019	$ 304	102,215	89,011	191,530
Stock-based compensation	$ 0	1,211	0	1,211
Stock issued on vesting of RSUs (in shares)	193
Stock issued on vesting of RSUs	$ 1	(1)	0	0
Taxes paid on vesting of RSUs (in shares)	(80)
Taxes paid on vesting of RSUs	$ 0	(75)	0	(75)
Dividends	0	0	(1,236)	(1,236)
Net income (loss)	$ 0	0	(6,220)	(6,220)
Other (in shares)	77
Other	$ 1	49	0	50
Balance (in shares) at Dec. 31, 2020	30,610
Balance at Dec. 31, 2020	$ 306	$ 103,399	$ 81,555	$ 185,260

Note 1 - Summary of Significant

Note 1 - Summary of Significant Accounting Policies	12 Months Ended
Note 1 - Summary of Significant Accounting Policies	Dec. 31, 2020
Notes to Financial Statements
Significant Accounting Policies [Text Block]	( 1 Basis of Presentation and Consolidation The consolidated financial statements include the accounts of Hallador Energy Company (hereinafter known as, “we, us, or our”) and its wholly owned subsidiaries Sunrise Coal, LLC (Sunrise) and Hourglass Sands, LLC (Hourglass), and Sunrise’s wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. Sunrise is engaged in the production of steam coal from mines located in western Indiana. Segment Information The Company’s significant operating segment includes the two Allowance for Doubtful Accounts The Company evaluates the need for an allowance for uncollectible receivables based on a review of account balances that are likely to be uncollectible, as determined by such variables as customer creditworthiness, the age of the receivables and disputed amounts. Historically, credit losses have been insignificant. At December 31, 2020 2019 no Inventory Inventory and parts and supplies are valued at the lower of average cost or net realizable value determined using the first first Prepaid expenses Prepaid expenses include prepaid insurance, prepaid maintenance expense, and a prepaid balance with our primary parts and supplies vendor. Advanced Royalties Coal leases that require minimum annual or advance payments and are recoverable from future production are generally deferred and charged to expense as the coal is subsequently produced. Advance royalties are included in other assets. Mining Properties Mining properties are recorded at cost. Interest costs applicable to major asset additions are capitalized during the construction period. Expenditures that extend the useful lives or increase the productivity of the assets are capitalized. The cost of maintenance and repairs that do not three twenty-five If facts and circumstances suggest that a long-lived asset may not 2 Mine Development Costs of developing new mines, including asset retirement obligation assets, or significantly expanding the capacity of existing mines, are capitalized and amortized using the units-of-production method over estimated recoverable reserves. Asset Retirement Obligations (ARO) – Reclamation At the time they are incurred, legal obligations associated with the retirement of long-lived assets are reflected at their estimated fair value, with a corresponding charge to mine development. Obligations are typically incurred when we commence development of underground and surface mines and include reclamation of support facilities, refuse areas and slurry ponds. Obligations are reflected at the present value of their future cash flows. We reflect accretion of the obligations for the period from the date they are incurred through the date they are extinguished. The ARO assets are amortized using the units-of-production method over estimated recoverable (proved and probable) reserves. We are using credit-adjusted risk-free discount rates ranging from 5.0% to 10% to discount the obligation. Federal and state laws require that mines be reclaimed in accordance with specific standards and approved reclamation plans, as outlined in mining permits. Activities include reclamation of pit and support acreage at surface mines, sealing portals at underground mines, and reclamation of refuse areas and slurry ponds. We review our ARO at least annually and reflect revisions for permit changes, changes in our estimated reclamation costs and changes in the estimated timing of such costs. In the event we are not The table below (in thousands) reflects the changes to our ARO: Year Ended December 31, 2020 2019 Balance, beginning of year $ 15,764 $ 14,646 Accretion 1,381 1,272 Revisions — 95 Payments (868 ) (249 ) Balance, end of year 16,277 15,764 Less current portion (100 ) (70 ) Long-term balance, end of year $ 16,177 $ 15,694 Interest Rate Swaps The Company generally utilizes derivative instruments to manage exposures to interest rate risk on long-term debt. The Company enters into interest rate swaps in order to achieve a mix of fixed and variable rate debt that it deems appropriate. These interest rate swaps have not Statement of Cash Flows Cash equivalents include investments with maturities when purchased of three Income Taxes Income taxes are provided based on the liability method of accounting. The provision for income taxes is based on pretax financial income. Deferred tax assets and liabilities are recognized for the future expected tax consequences of temporary differences between income tax and financial reporting and principally relate to differences in the tax basis of assets and liabilities and their reported amounts, using enacted tax rates in effect for the year in which differences are expected to reverse. Net Income (Loss) per Share Basic net income (loss) per share is computed on the basis of the weighted average number of shares of common stock outstanding during the period using the two two Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with generally accepted accounting principles requires us 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 amounts could differ from those estimates. The most significant estimates included in the preparation of the financial statements relate to: (i) deferred income tax accounts, (ii) coal reserves, (iii) depreciation, depletion, and amortization, (iv) estimates relating to interest rate swaps, and (v) estimates used in our impairment analysis and measurement of impairments. Long-term Contracts As of December 31, 2020 For 2020 four 10% four 10% December 31, 2020 For 2019 four 10% three 10% December 31, 2019 Stock-based Compensation Stock-based compensation is measured at the grant date based on the fair value of the award and is recognized as expense over the applicable vesting period of the stock award (generally two four

Note 2 - Long-lived Asset Impai

Note 2 - Long-lived Asset Impairments	12 Months Ended
Note 2 - Long-lived Asset Impairments	Dec. 31, 2020
Notes to Financial Statements
Asset Impairment Charges [Text Block]	( 2 Long-lived assets are reviewed for impairment whenever events or changes in circumstance indicate that the carrying amount of the assets may not 19 December 31, 2020, no 19 Carlisle Mine Due to softness in the market in Q4 2019 Q4 2019 2020, December 31, 2019. December 31, 2019, $1.8 December 31, 2019. Q1 2020 2020 Q1 Q2 2020. not not 205 20. Bulldog Reserves As a result of the Carlisle Mine impairment, we determined that an impairment of the Bulldog Reserves was also necessary. With the closure of the Carlisle Mine, it became apparent that the likelihood of construction and opening of Bulldog was reduced. Based on our review, we recorded an impairment of $9.2 million as of December 31, 2019, Hourglass Sands We recorded an impairment of $2.9 million as of December 31, 2019, December 31, 2019. August 2020, third 2020,

Note 3 - Inventory

Note 3 - Inventory	12 Months Ended
Note 3 - Inventory	Dec. 31, 2020
Notes to Financial Statements
Inventory Disclosure [Text Block]	( 3 Inventory is valued at lower of average cost or net realizable value (NRV). As of December 31, 2020 December 31, 2019

Note 4 - Other Long-term Assets

Note 4 - Other Long-term Assets	12 Months Ended
Note 4 - Other Long-term Assets	Dec. 31, 2020
Notes to Financial Statements
Other Assets Disclosure [Text Block]	( 4 December 31, 2020 2019 Advanced coal royalties $ 6,449 $ 6,105 Marketable equity securities available for sale, at fair value (restricted)* — 2,296 Other 1,809 1,923 Total other assets $ 8,258 $ 10,324 * Held by Sunrise Indemnity, Inc., our wholly owned captive insurance company.

Note 5 - Bank Debt

Note 5 - Bank Debt	12 Months Ended
Note 5 - Bank Debt	Dec. 31, 2020
Notes to Financial Statements
Debt Disclosure [Text Block]	( 5 On April 15, 2020, 2020 2.0X. During 2020, December 31, 2020 December 31, 2020) December 31, 2020). March 2023. September 2023. Liquidity As of December 31, 2020, December 31, 2020 Fees Unamortized bank fees and other costs incurred in connection with the initial facility and subsequent amendments totaled $7.9 million as of our amendment in April 2020. December 31, 2020 2019 April 15 Bank debt, less debt issuance costs, is presented below (in thousands): December 31, 2020 2019 Current bank debt $ 36,750 $ 34,912 Less unamortized debt issuance cost (2,439 ) (1,868 ) Net current portion $ 34,311 $ 33,044 Long-term bank debt $ 100,988 $ 145,238 Less unamortized debt issuance cost (3,681 ) (4,644 ) Net long-term portion $ 97,307 $ 140,594 Total bank debt $ 137,738 $ 180,150 Less total unamortized debt issuance cost (6,120 ) (6,512 ) Net bank debt $ 131,618 $ 173,638 Covenants The credit facility includes a Maximum Leverage Ratio (consolidated funded debt / trailing twelve twelve not Fiscal Periods Ending Ratio December 31, 2020 3.50 to 1.00 March 31, 2021 and June 30, 2021 3.25 to 1.00 September 30, 2021 and December 31, 2021 3.00 to 1.00 March 31, 2022 and each fiscal quarter thereafter 2.50 to 1.00 As of December 31, 2020 The credit facility also requires a Minimum Debt Service Coverage Ratio (consolidated adjusted EBITDA / annual debt service) calculated as of the end of each fiscal quarter for the trailing twelve 1.00 December 31, 2021, 1.00 As of December 31, 2020 Interest Rate The interest rate on the facility ranges from LIBOR plus 2.75% to LIBOR plus 4.00%, depending on our Leverage Ratio, with a LIBOR floor of 0.50%. We entered into swap agreements to fix the LIBOR component of the interest rate at 2.92% on the declining term loan balance and on $53 million of the revolver. At December 31, 2020 Future Maturities (in thousands): 2021 36,750 2022 25,725 2023 75,263 Total $ 137,738 Paycheck Protection Program On April 16, 2020, The annual interest rate on the PPP Note is 1.00%. six 2021. not ~$1.1 August 2021 April 2022. may Under the terms of the CARES Act, PPP loan recipients can apply for and be granted forgiveness for all or a portion of the loan granted under the PPP. Such forgiveness will be determined, subject to limitations, based on the use of loan proceeds for payment of payroll costs and any covered payments of mortgage interest, rent, and utilities. In the event the PPP Loan, or any portion thereof, is forgiven pursuant to the PPP, the amount forgiven is applied to outstanding principal. The Company used all proceeds from the PPP Loan to maintain payroll and utility payments. At December 31, 2020 December 2020, January 8, 2021, no If the SBA determines that the Company was not not

Note 6 - Accounts Payable and A

Note 6 - Accounts Payable and Accrued Liabilities	12 Months Ended
Note 6 - Accounts Payable and Accrued Liabilities	Dec. 31, 2020
Notes to Financial Statements
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	( 6 December 31, 2020 2019 Accounts payable $ 14,785 $ 16,115 Accrued property taxes 2,566 2,835 Accrued payroll 1,621 2,151 Workers' compensation reserve 2,988 3,446 Group health insurance 1,800 2,500 Other 7,649 4,753 Total accounts payable and accrued liabilities $ 31,409 $ 31,800

Note 7 - Revenue

Note 7 - Revenue	12 Months Ended
Note 7 - Revenue	Dec. 31, 2020
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	( 7 Effective January 1, 2018, 2014 09. not Revenue from Contracts with Customers We account for a contract with a customer when the parties have approved the contract and are committed to performing their respective obligations, the rights of each party are identified, payment terms are identified, the contract has commercial substance, and collectability of consideration is probable. We recognize revenue when we satisfy a performance obligation by transferring control of a good or service to a customer. We utilize the normal purchase normal sales exception for all long-term sales contracts. Our revenue is derived from sales to customers of coal produced at our facilities. Our customers purchase coal directly from our mine sites and our Princeton Loop, where the sale occurs and where title, risk of loss, and control typically pass to the customer at that point. Our customers arrange for and bear the costs of transporting their coal from our mines to their plants or other specified discharge points. Our customers are typically domestic utility companies. Our coal sales agreements with our customers are fixed-priced, fixed-volume supply contracts, or include a predetermined escalation in price for each year. Price re-opener and index provisions may may Coal sales agreements will typically contain coal quality specifications. With coal quality specifications in place, the raw coal sold by us to the customer at the delivery point must be substantially free of magnetic material and other foreign material impurities and crushed to a maximum size as set forth in the respective coal sales agreement. Price adjustments are made and billed in the month the coal sale was recognized based on quality standards that are specified in the coal sales agreement, such as Btu factor, moisture, ash, and sulfur content and can result in either increases or decreases in the value of the coal shipped. Disaggregation of Revenue Revenue is disaggregated by primary geographic markets, as we believe this best depicts how the nature, amount, timing, and uncertainty of our revenue and cash flows are affected by economic factors. 74% and 74% of our coal revenue for the years ended December 31, 2020 2019 Performance Obligations A performance obligation is a promise in a contract with a customer to provide distinct goods or services. Performance obligations are the unit of account for purposes of applying the revenue recognition standard and therefore determine when and how revenue is recognized. In most of our contracts, the customer contracts with us to provide coal that meets certain quality criteria. We consider each ton of coal a separate performance obligation and allocate the transaction price based on the base price per the contract, increased or decreased for quality adjustments. We recognize revenue at a point in time as the customer does not We have remaining performance obligations relating to fixed priced contracts of approximately $493 million, which represent the average fixed prices on our committed contracts as of December 31, 2020 2021 2022, We have remaining performance obligations relating to contracts with price reopeners of approximately $237 million, which represents our estimate of the expected re-opener price on committed contracts as of December 31, 2020 2022. The tons used to determine the remaining performance obligations are subject to adjustment in instances of force majeure and exercise of customer options to either take additional tons or reduce tonnage if such option exists in the customer contract. Contract Balances Under ASC 606, not not not December 31, 2020 one

Note 8 - Other Operating Income

Note 8 - Other Operating Income	12 Months Ended
Note 8 - Other Operating Income	Dec. 31, 2020
Notes to Financial Statements
Other Operating Income and Expense [Text Block]	( 8 Year Ended December 31, 2020 2019 Equity income (loss) - Sunrise Energy $ 1,054 $ (527 ) MSHA reimbursements 400 575 Gain on sale of royalty interests in oil properties — 2,949 Miscellaneous 1,757 3,029 $ 3,211 $ 6,026

Note 9 - Income Taxes

Note 9 - Income Taxes	12 Months Ended
Note 9 - Income Taxes	Dec. 31, 2020
Notes to Financial Statements
Income Tax Disclosure [Text Block]	( 9 Our income tax is different than the expected amount computed using the applicable federal statutory income tax rate of 21%. The reasons for and effects of such differences for the years ended December 31 2020 2019 Expected amount $ (1,865 ) $ (17,262 ) State income taxes, net of federal benefit (644 ) (3,831 ) Percentage depletion (2,154 ) (1,475 ) Valuation allowance 1,275 — Stock-based compensation 67 326 Return to provision adjustments (60 ) (78 ) Other 723 (27 ) $ (2,658 ) $ (22,347 ) The deferred tax assets and liabilities resulting from temporary differences between book and tax basis are comprised of the following at December 31 2020 2019 Long-term deferred tax assets: Net operating loss $ 24,081 $ 18,956 Valuation allowance (1,275 ) — Interest limitation carryforward — 1,801 Capital loss carryforward 525 555 Alternative minimum tax credit — 524 Stock-based compensation 179 135 Other 529 1,029 Total long-term deferred tax assets: 24,039 23,000 Coal properties (26,863 ) (27,884 ) Net deferred tax liability $ (2,824 ) $ (4,884 ) Our effective tax rate (ETR) for 2020 2019 December 31, 2020 2019 not not We recognize deferred tax assets to the extent that we believe that these assets are more likely than not not not December 31, 2020 2019, We have analyzed our filing positions in all of the federal and state jurisdictions where we are required to file income tax returns, as well as all open tax years in these jurisdictions, to determine whether the positions will be more likely than not not not not not not three At December 31, 2020 2017 20 2018 2035 2037 not 20 2034 2040 not

Note 10 - Stock Compensation Pl

Note 10 - Stock Compensation Plans	12 Months Ended
Note 10 - Stock Compensation Plans	Dec. 31, 2020
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	( 10 Restricted Stock Units (RSUs) The table below shows the number of RSUs available for issuance at December 31, 2020 Total authorized RSUs in Plan approved by shareholders 4,850,000 Stock issued out of the Plan from vested grants (3,091,049 ) Non-vested grants (324,250 ) RSUs available for future issuance 1,434,701 Non-vested grants at December 31, 2018 789,250 Granted – weighted average share price on grant date was $3.98 17,000 Vested – weighted average share price on vesting date was $2.95 (297,250 ) Forfeited (20,500 ) Non-vested grants at December 31, 2019 488,500 Granted – weighted average share price on grant date was $.90 40,000 Vested – weighted average share price on vesting date was $.92 (193,250 ) Forfeited (11,000 ) Non-vested grants at December 31, 2020 324,250 RSU Vesting Schedule Vesting Year RSUs Vesting 2021 305,250 2022 9,000 2023 10,000 324,250 Vested shares had a value of $0.2 million for 2020 2019 The outstanding RSUs have a value of $0.5 million based on the March 4, 2021 For the years ended December 31, 2020 2019 2021, 2022 2023. Stock Options We have no stock options outstanding. Stock Bonus Plan Our stock bonus plan was authorized in late 2009

Note 11 - Employee Benefits

Note 11 - Employee Benefits	12 Months Ended
Note 11 - Employee Benefits	Dec. 31, 2020
Notes to Financial Statements
Compensation and Employee Benefit Plans [Text Block]	( 11 We have no 401 first not not Our employee benefit expenses for the years ended December 31 2020 2019 Health benefits, including premiums $ 13,173 $ 16,228 401(k) matching 1,797 2,510 Deferred bonus plan 679 727 Total $ 15,649 $ 19,465 Of the amounts in the above table, $15.0 million and $18.9 million are recorded in operating costs and expenses for 2020 2019 Our mine employees are also covered by workers’ compensation and such costs for 2020 2019 no

Note 12 - Leases

Note 12 - Leases	12 Months Ended
Note 12 - Leases	Dec. 31, 2020
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	( 12 We have operating leases for office space and processing facilities with remaining lease terms ranging from less than one five not not Information related to leases was as follows as of December 31 ( 2020 Operating lease information: Operating cash outflows from operating leases $ 235 Weighted average remaining lease term in years 3.18 Weighted average discount rate 6.0 % Future minimum lease payments under non-cancellable leases as of December 31, 2020 Year Amount 2021 $ 203 2022 206 2023 173 2024 60 Total minimum lease payments $ 642 Less imputed interest (40 ) Total operating lease liability $ 602 As reflected on balance sheet: Other long-term liabilities $ 602 At December 31, 2020

Note 13 - Self-insurance

Note 13 - Self-insurance	12 Months Ended
Note 13 - Self-insurance	Dec. 31, 2020
Notes to Financial Statements
Self Insurance [Text Block]	( 13 We self-insure our underground mining equipment. Such equipment is allocated among seven December 31, 2020 December 31, 2019 Restricted cash of $4.0 million and $4.5 million as of December 31, 2020 December 31, 2019 third

Note 14 - Net Loss Per Share

Note 14 - Net Loss Per Share	12 Months Ended
Note 14 - Net Loss Per Share	Dec. 31, 2020
Notes to Financial Statements
Earnings Per Share [Text Block]	( 14 We compute net loss per share using the two The following table (in thousands, except per share amounts) sets forth the computation of net loss per share: Year Ended December 31, 2020 2019 Numerator: Net loss $ (6,220 ) $ (59,854 ) Less loss allocated to RSUs 94 907 Net loss allocated to common shareholders $ (6,126 ) $ (58,947 ) Denominator: Weighted average number of common shares outstanding 30,446 30,253 Net loss per share: Basic and diluted $ (0.20 ) $ (1.95 )

Note 15 - Fair Value Measuremen

Note 15 - Fair Value Measurements	12 Months Ended
Note 15 - Fair Value Measurements	Dec. 31, 2020
Notes to Financial Statements
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]	( 15 We account for certain assets and liabilities at fair value. The hierarchy below lists three one three Level 1: 1 Level 2: not no 2 Level 3: no 3 two December 31, 2020, May 2022. $1.79/gallon $2.00/gallon December 2021. third not 2. Q3 2020 3 2. The following table summarizes our financial assets and liabilities measured on a recurring basis at fair value at December 31, 2020 2019 Level 1 Level 2 Level 3 Total December 31, 2020 Liabilities: Fuel hedge $ — $ — $ 297 $ 297 Interest rate swaps — — 3,893 3,893 $ — $ — $ 4,190 $ 4,190 December 31, 2019 Assets: Fuel hedge $ — $ — $ 25 $ 25 Marketable securities - restricted (Note 4) 2,296 — — 2,296 $ 2,296 $ — $ 25 $ 2,321 Liabilities: Interest rate swaps $ — $ — $ 3,825 $ 3,825 The table below highlights the change in fair value of the fuel hedges and interest rate swaps which are based on a discounted future cash flow model (in thousands): Ending balance, December 31, 2018 $ (1,639 ) Change in estimated fair value (2,161 ) Ending balance, December 31, 2019 (3,800 ) Change in estimated fair value (390 ) Ending balance, December 31, 2020* $ (4,190 ) ------------------------------- *Recorded in accounts payable and accrued liabilities and other liabilities in the Balance Sheet to these Consolidated Financial Statements.

Note 16 - Equity Method Investm

Note 16 - Equity Method Investments	12 Months Ended
Note 16 - Equity Method Investments	Dec. 31, 2020
Notes to Financial Statements
Equity Method Investments and Joint Ventures Disclosure [Text Block]	( 16 Sunrise Energy, LLC We own a 50% interest in Sunrise Energy, LLC, which owns gas reserves and gathering equipment with plans to develop and operate such reserves. Sunrise Energy also plans to develop and explore for oil, gas, and coal-bed methane gas reserves on or near our underground coal reserves. The carrying value of the investment included in our consolidated balance sheets as of December 31, 2020 December 31, 2019 Sunrise Energy plans to develop and explore for oil, gas, and coal-bed methane gas reserves on or near our underground coal reserves.

Note 17 - Hourglass Sands

Note 17 - Hourglass Sands	12 Months Ended
Note 17 - Hourglass Sands	Dec. 31, 2020
Notes to Financial Statements
Business Combination Disclosure [Text Block]	( 17 In February 2018, not In February 2018, one may In December 2019, August 2020, 2

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
Significant Accounting Policies (Policies)	Dec. 31, 2020
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	Basis of Presentation and Consolidation The consolidated financial statements include the accounts of Hallador Energy Company (hereinafter known as, “we, us, or our”) and its wholly owned subsidiaries Sunrise Coal, LLC (Sunrise) and Hourglass Sands, LLC (Hourglass), and Sunrise’s wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. Sunrise is engaged in the production of steam coal from mines located in western Indiana.
Segment Reporting, Policy [Policy Text Block]	Segment Information The Company’s significant operating segment includes the two
Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block]	Allowance for Doubtful Accounts The Company evaluates the need for an allowance for uncollectible receivables based on a review of account balances that are likely to be uncollectible, as determined by such variables as customer creditworthiness, the age of the receivables and disputed amounts. Historically, credit losses have been insignificant. At December 31, 2020 2019 no
Inventory Supplies, Policy [Policy Text Block]	Inventory Inventory and parts and supplies are valued at the lower of average cost or net realizable value determined using the first first
Receivables and Portions of Securitizations that can be Prepaid at Potential Loss, Policy [Policy Text Block]	Prepaid expenses Prepaid expenses include prepaid insurance, prepaid maintenance expense, and a prepaid balance with our primary parts and supplies vendor.
Advance Royalties [Policy Text Block]	Advanced Royalties Coal leases that require minimum annual or advance payments and are recoverable from future production are generally deferred and charged to expense as the coal is subsequently produced. Advance royalties are included in other assets.
Mining Properties [Policy Text Block]	Mining Properties Mining properties are recorded at cost. Interest costs applicable to major asset additions are capitalized during the construction period. Expenditures that extend the useful lives or increase the productivity of the assets are capitalized. The cost of maintenance and repairs that do not three twenty-five If facts and circumstances suggest that a long-lived asset may not 2
Mine Development [Policy Text Block]	Mine Development Costs of developing new mines, including asset retirement obligation assets, or significantly expanding the capacity of existing mines, are capitalized and amortized using the units-of-production method over estimated recoverable reserves.
Asset Retirement Obligation [Policy Text Block]	Asset Retirement Obligations (ARO) – Reclamation At the time they are incurred, legal obligations associated with the retirement of long-lived assets are reflected at their estimated fair value, with a corresponding charge to mine development. Obligations are typically incurred when we commence development of underground and surface mines and include reclamation of support facilities, refuse areas and slurry ponds. Obligations are reflected at the present value of their future cash flows. We reflect accretion of the obligations for the period from the date they are incurred through the date they are extinguished. The ARO assets are amortized using the units-of-production method over estimated recoverable (proved and probable) reserves. We are using credit-adjusted risk-free discount rates ranging from 5.0% to 10% to discount the obligation. Federal and state laws require that mines be reclaimed in accordance with specific standards and approved reclamation plans, as outlined in mining permits. Activities include reclamation of pit and support acreage at surface mines, sealing portals at underground mines, and reclamation of refuse areas and slurry ponds. We review our ARO at least annually and reflect revisions for permit changes, changes in our estimated reclamation costs and changes in the estimated timing of such costs. In the event we are not The table below (in thousands) reflects the changes to our ARO: Year Ended December 31, 2020 2019 Balance, beginning of year $ 15,764 $ 14,646 Accretion 1,381 1,272 Revisions — 95 Payments (868 ) (249 ) Balance, end of year 16,277 15,764 Less current portion (100 ) (70 ) Long-term balance, end of year $ 16,177 $ 15,694
Derivatives, Policy [Policy Text Block]	Interest Rate Swaps The Company generally utilizes derivative instruments to manage exposures to interest rate risk on long-term debt. The Company enters into interest rate swaps in order to achieve a mix of fixed and variable rate debt that it deems appropriate. These interest rate swaps have not
Statement of Cash Flows [Policy Text Block]	Statement of Cash Flows Cash equivalents include investments with maturities when purchased of three
Income Tax, Policy [Policy Text Block]	Income Taxes Income taxes are provided based on the liability method of accounting. The provision for income taxes is based on pretax financial income. Deferred tax assets and liabilities are recognized for the future expected tax consequences of temporary differences between income tax and financial reporting and principally relate to differences in the tax basis of assets and liabilities and their reported amounts, using enacted tax rates in effect for the year in which differences are expected to reverse.
Earnings Per Share, Policy [Policy Text Block]	Net Income (Loss) per Share Basic net income (loss) per share is computed on the basis of the weighted average number of shares of common stock outstanding during the period using the two two
Use of Estimates, Policy [Policy Text Block]	Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with generally accepted accounting principles requires us 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 amounts could differ from those estimates. The most significant estimates included in the preparation of the financial statements relate to: (i) deferred income tax accounts, (ii) coal reserves, (iii) depreciation, depletion, and amortization, (iv) estimates relating to interest rate swaps, and (v) estimates used in our impairment analysis and measurement of impairments.
Insurance, Long-Duration Contract [Policy Text Block]	Long-term Contracts As of December 31, 2020 For 2020 four 10% four 10% December 31, 2020 For 2019 four 10% three 10% December 31, 2019
Share-based Payment Arrangement [Policy Text Block]	Stock-based Compensation Stock-based compensation is measured at the grant date based on the fair value of the award and is recognized as expense over the applicable vesting period of the stock award (generally two four

Note 1 - Summary of Significa_2

Note 1 - Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2020
Notes Tables
Schedule of Asset Retirement Obligations [Table Text Block]	Year Ended December 31, 2020 2019 Balance, beginning of year $ 15,764 $ 14,646 Accretion 1,381 1,272 Revisions — 95 Payments (868 ) (249 ) Balance, end of year 16,277 15,764 Less current portion (100 ) (70 ) Long-term balance, end of year $ 16,177 $ 15,694

Note 4 - Other Long-term Asse_2

Note 4 - Other Long-term Assets (Tables)	12 Months Ended
Note 4 - Other Long-term Assets (Tables)	Dec. 31, 2020
Notes Tables
Schedule of Other Assets, Noncurrent [Table Text Block]	December 31, 2020 2019 Advanced coal royalties $ 6,449 $ 6,105 Marketable equity securities available for sale, at fair value (restricted)* — 2,296 Other 1,809 1,923 Total other assets $ 8,258 $ 10,324

Note 5 - Bank Debt (Tables)

Note 5 - Bank Debt (Tables)	12 Months Ended
Note 5 - Bank Debt (Tables)	Dec. 31, 2020
Notes Tables
Schedule of Debt [Table Text Block]	December 31, 2020 2019 Current bank debt $ 36,750 $ 34,912 Less unamortized debt issuance cost (2,439 ) (1,868 ) Net current portion $ 34,311 $ 33,044 Long-term bank debt $ 100,988 $ 145,238 Less unamortized debt issuance cost (3,681 ) (4,644 ) Net long-term portion $ 97,307 $ 140,594 Total bank debt $ 137,738 $ 180,150 Less total unamortized debt issuance cost (6,120 ) (6,512 ) Net bank debt $ 131,618 $ 173,638
Schedule of Line of Credit Facilities [Table Text Block]	Fiscal Periods Ending Ratio December 31, 2020 3.50 to 1.00 March 31, 2021 and June 30, 2021 3.25 to 1.00 September 30, 2021 and December 31, 2021 3.00 to 1.00 March 31, 2022 and each fiscal quarter thereafter 2.50 to 1.00
Schedule of Maturities of Long-term Debt [Table Text Block]	Future Maturities (in thousands): 2021 36,750 2022 25,725 2023 75,263 Total $ 137,738

Note 6 - Accounts Payable and_2

Note 6 - Accounts Payable and Accrued Liabilities (Tables)	12 Months Ended
Note 6 - Accounts Payable and Accrued Liabilities (Tables)	Dec. 31, 2020
Notes Tables
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]	December 31, 2020 2019 Accounts payable $ 14,785 $ 16,115 Accrued property taxes 2,566 2,835 Accrued payroll 1,621 2,151 Workers' compensation reserve 2,988 3,446 Group health insurance 1,800 2,500 Other 7,649 4,753 Total accounts payable and accrued liabilities $ 31,409 $ 31,800

Note 8 - Other Operating Inco_2

Note 8 - Other Operating Income (Tables)	12 Months Ended
Note 8 - Other Operating Income (Tables)	Dec. 31, 2020
Notes Tables
Schedule of Other Operating Income (Expense) [Table Text Block]	Year Ended December 31, 2020 2019 Equity income (loss) - Sunrise Energy $ 1,054 $ (527 ) MSHA reimbursements 400 575 Gain on sale of royalty interests in oil properties — 2,949 Miscellaneous 1,757 3,029 $ 3,211 $ 6,026

Note 9 - Income Taxes (Tables)

Note 9 - Income Taxes (Tables)	12 Months Ended
Note 9 - Income Taxes (Tables)	Dec. 31, 2020
Notes Tables
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	2020 2019 Expected amount $ (1,865 ) $ (17,262 ) State income taxes, net of federal benefit (644 ) (3,831 ) Percentage depletion (2,154 ) (1,475 ) Valuation allowance 1,275 — Stock-based compensation 67 326 Return to provision adjustments (60 ) (78 ) Other 723 (27 ) $ (2,658 ) $ (22,347 )
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	2020 2019 Long-term deferred tax assets: Net operating loss $ 24,081 $ 18,956 Valuation allowance (1,275 ) — Interest limitation carryforward — 1,801 Capital loss carryforward 525 555 Alternative minimum tax credit — 524 Stock-based compensation 179 135 Other 529 1,029 Total long-term deferred tax assets: 24,039 23,000 Coal properties (26,863 ) (27,884 ) Net deferred tax liability $ (2,824 ) $ (4,884 )

Note 10 - Stock Compensation _2

Note 10 - Stock Compensation Plans (Tables)	12 Months Ended
Note 10 - Stock Compensation Plans (Tables)	Dec. 31, 2020
Notes Tables
Nonvested Restricted Stock Shares Activity [Table Text Block]	Total authorized RSUs in Plan approved by shareholders 4,850,000 Stock issued out of the Plan from vested grants (3,091,049 ) Non-vested grants (324,250 ) RSUs available for future issuance 1,434,701
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]	Non-vested grants at December 31, 2018 789,250 Granted – weighted average share price on grant date was $3.98 17,000 Vested – weighted average share price on vesting date was $2.95 (297,250 ) Forfeited (20,500 ) Non-vested grants at December 31, 2019 488,500 Granted – weighted average share price on grant date was $.90 40,000 Vested – weighted average share price on vesting date was $.92 (193,250 ) Forfeited (11,000 ) Non-vested grants at December 31, 2020 324,250
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]	Vesting Year RSUs Vesting 2021 305,250 2022 9,000 2023 10,000 324,250

Note 11 - Employee Benefits (Ta

Note 11 - Employee Benefits (Tables)	12 Months Ended
Note 11 - Employee Benefits (Tables)	Dec. 31, 2020
Notes Tables
Schedule of Expected Benefit Payments [Table Text Block]	2020 2019 Health benefits, including premiums $ 13,173 $ 16,228 401(k) matching 1,797 2,510 Deferred bonus plan 679 727 Total $ 15,649 $ 19,465

Note 12 - Leases (Tables)

Note 12 - Leases (Tables)	12 Months Ended
Note 12 - Leases (Tables)	Dec. 31, 2020
Notes Tables
Lease, Cost [Table Text Block]	2020 Operating lease information: Operating cash outflows from operating leases $ 235 Weighted average remaining lease term in years 3.18 Weighted average discount rate 6.0 %
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Year Amount 2021 $ 203 2022 206 2023 173 2024 60 Total minimum lease payments $ 642 Less imputed interest (40 ) Total operating lease liability $ 602 As reflected on balance sheet: Other long-term liabilities $ 602

Note 14 - Net Loss Per Share (T

Note 14 - Net Loss Per Share (Tables)	12 Months Ended
Note 14 - Net Loss Per Share (Tables)	Dec. 31, 2020
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Year Ended December 31, 2020 2019 Numerator: Net loss $ (6,220 ) $ (59,854 ) Less loss allocated to RSUs 94 907 Net loss allocated to common shareholders $ (6,126 ) $ (58,947 ) Denominator: Weighted average number of common shares outstanding 30,446 30,253 Net loss per share: Basic and diluted $ (0.20 ) $ (1.95 )

Note 15 - Fair Value Measurem_2

Note 15 - Fair Value Measurements (Tables)	12 Months Ended
Note 15 - Fair Value Measurements (Tables)	Dec. 31, 2020
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	Level 1 Level 2 Level 3 Total December 31, 2020 Liabilities: Fuel hedge $ — $ — $ 297 $ 297 Interest rate swaps — — 3,893 3,893 $ — $ — $ 4,190 $ 4,190 December 31, 2019 Assets: Fuel hedge $ — $ — $ 25 $ 25 Marketable securities - restricted (Note 4) 2,296 — — 2,296 $ 2,296 $ — $ 25 $ 2,321 Liabilities: Interest rate swaps $ — $ — $ 3,825 $ 3,825
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	Ending balance, December 31, 2018 $ (1,639 ) Change in estimated fair value (2,161 ) Ending balance, December 31, 2019 (3,800 ) Change in estimated fair value (390 ) Ending balance, December 31, 2020* $ (4,190 )

Note 1 - Summary of Significa_3

Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands, T in Millions	12 Months Ended
	Dec. 31, 2020USD ($)T	Dec. 31, 2019USD ($)
Accounts Receivable, Allowance for Credit Loss, Ending Balance \| $	$ 0	$ 0
Surety bonds \| $	$ 27,000
Coal Supply Commitment (US Ton) \| T	21.6
Year Supply Commitments End	2027
Priced Coal Supply Commitment (US Ton) \| T	13.7
Revenue, Product and Service Benchmark [Member] \| Customer Concentration Risk [Member] \| Coal [Member]
Number of Major Customers	4	4
Revenue, Product and Service Benchmark [Member] \| Customer Concentration Risk [Member] \| Four Customers [Member] \| Coal [Member]
Concentration Risk, Percentage	79.00%	70.00%
Accounts Receivable [Member] \| Customer Concentration Risk [Member] \| Coal [Member]
Number of Major Customers	4	3
Accounts Receivable [Member] \| Customer Concentration Risk [Member] \| Four Customers [Member] \| Coal [Member]
Concentration Risk, Percentage	87.00%
Accounts Receivable [Member] \| Customer Concentration Risk [Member] \| Three Customers [Member] \| Coal [Member]
Concentration Risk, Percentage		68.00%
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	2 years
Minimum [Member] \| Measurement Input, Discount Rate [Member]
ARO measurement input	0.050
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	25 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	4 years
Maximum [Member] \| Measurement Input, Discount Rate [Member]
ARO measurement input	0.10
Southwestern Indiana [Member]
Number of Underground Mines Included in the Significant Operating Segment	2

Note 1 - Summary of Significa_4

Note 1 - Summary of Significant Accounting Policies - Changes to Asset Retirement Obligation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Balance, beginning of year	$ 15,764	$ 14,646
Accretion	1,381	1,272
Revisions	0	95
Payments	(868)	(249)
Balance, end of year	16,277	15,764
Less current portion	(100)	(70)
Long-term balance, end of year	$ 16,177	$ 15,694

Note 2 - Long-lived Asset Imp_2

Note 2 - Long-lived Asset Impairments (Details Textual) $ in Thousands	1 Months Ended		3 Months Ended				12 Months Ended
	Aug. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Asset Impairment Charges, Total							$ 1,799	$ 77,882
Carlisle Mine [Member]
Asset Impairment Charges, Total						$ 65,700	$ 0
Mineral Properties, Net, Total		$ 1,800				$ 1,800		$ 1,800
Equipment, Redeployed					$ 23,000
Carlisle Mine [Member] \| Closing of Mine [Member]
Restructuring and Related Costs, Incurred Cost, Total				$ 1,100	$ 1,100
Carlisle Mine [Member] \| Measurement Input, Discount Rate [Member] \| Valuation Technique, Discounted Cash Flow [Member]
Asset Impairment, Measurement Input		0.10				0.10		0.10
Bulldog Reserves [Member]
Asset Impairment Charges, Total						$ 9,200
Hourglass Sands [Member]
Asset Impairment Charges, Total	$ 1,800	$ 2,900	$ 1,800					$ 2,900
Mineral Properties, Net, Total		$ 1,900				$ 1,900		$ 1,900

Note 3 - Inventory (Details Tex

Note 3 - Inventory (Details Textual) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Inventory Adjustments, Total	$ 1.6	$ 2

Note 4 - Other Long-term Asse_3

Note 4 - Other Long-term Assets - Other Long-term Assets (Details) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Advanced coal royalties		$ 6,449	$ 6,105
Marketable equity securities available for sale, at fair value (restricted)*	[1]	0	2,296
Other		1,809	1,923
Total other assets		$ 8,258	$ 10,324

[1]	Held by Sunrise Indemnity, Inc., our wholly owned captive insurance company.

Note 5 - Bank Debt (Details Tex

Note 5 - Bank Debt (Details Textual) $ in Thousands	Jan. 08, 2021USD ($)	Apr. 16, 2020USD ($)	Apr. 15, 2020USD ($)	Apr. 30, 2022USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Apr. 30, 2020USD ($)
Long-term Debt, Gross					$ 137,738	$ 180,150
Debt Issuance Costs, Net, Total					$ 6,120	6,512
Leverage Ratio					2.68
Debt Service Coverage Ratio					1.22
Proceeds from Notes Payable, Total					$ 10,000	0
Interest Rate Swap [Member]
Derivative, Fixed Interest Rate					2.92%
Derivative, Variable Interest Rate					6.42%
Derivative, Amount of Hedged Item					$ 121,000
Interest Rate Swap [Member] \| Not Designated as Hedging Instrument [Member]
Debt Instrument, Interest Rate, Effective Percentage Unhedged Amount					3.50%
London Interbank Offered Rate (LIBOR) Swap Rate [Member] \| Interest Rate Swap [Member]
Derivative, Basis Spread on Variable Rate					3.50%
Credit Agreement [Member]
Debt Instrument, Covenant, Maximum Annual Capital Expenditures, Remainder of Fiscal Year			$ 30,000
Debt Instrument, Covenant, Maximum Annual Capital Expenditures, Next Fiscal Year and Thereafter			$ 25,000
Debt Instrument, Covenant, Maximum Leverage Ratio for Dividends			2
Debt Instrument, Increase (Decrease), Net, Total					$ (42,400)
Long-term Debt, Gross					137,700
Debt Instrument, Unused Borrowing Capacity, Amount					43,800
Debt Instrument, Liquidity					51,800
Letters of Credit Outstanding, Amount					5,700
Debt Issuance Costs, Net, Total			$ 1,900		6,100	$ 6,500	$ 7,900
Debt Instrument, Unhedged Portion					$ 16,700
Credit Agreement [Member] \| Interest Rate Swap [Member]
Derivative, Fixed Interest Rate					2.92%
Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Variable Rate Floor			0.50%
Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate			2.75%
Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate			4.00%
Credit Agreement [Member] \| Through December 31, 2021 [Member]
Debt Instrument, Covenant, Minimum Debt Service Coverage Ratio			1.05
Credit Agreement [Member] \| After December 31, 2021 [Member]
Debt Instrument, Covenant, Minimum Debt Service Coverage Ratio			1.25
Credit Agreement [Member] \| Term Loan [Member]
Long-term Debt, Gross					$ 68,000
Credit Agreement [Member] \| Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity					120,000
Long-term Line of Credit, Total					69,700
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Interest Rate Swap [Member]
Derivative, Notional Amount					53,000
Paycheck Protection Program CARES Act [Member]
Proceeds from Notes Payable, Total		$ 10,000
Notes Payable, Total					10,000
Notes Payable, Amount of Forgiveness Applied For					$ 10,000
Paycheck Protection Program CARES Act [Member] \| Subsequent Event [Member]
Notes Payable, Amount of Forgiveness Pending	$ 10,000
Forgiveness of Notes Payable, Period from Receipt of Forgiveness Application During Which Lender Will Determine Forgiveness Amount (Day)	90 days
Paycheck Protection Program CARES Act [Member] \| Forecast [Member]
Debt Instrument, Monthly Payment if Debt Instrument is Not Forgiven				$ 1,100

Note 5 - Bank Debt - Bank Debt,

Note 5 - Bank Debt - Bank Debt, Less Debt Issuance Costs (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current bank debt	$ 36,750	$ 34,912
Less unamortized debt issuance cost	(2,439)	(1,868)
Net current portion	34,311	33,044
Long-term bank debt	100,988	145,238
Less unamortized debt issuance cost	(3,681)	(4,644)
Net long-term portion	97,307	140,594
Total	137,738	180,150
Less total unamortized debt issuance cost	(6,120)	(6,512)
Net bank debt	$ 131,618	$ 173,638

Note 5 - Bank Debt - Maximum Le

Note 5 - Bank Debt - Maximum Leverage Ratio (Details) - Credit Agreement [Member]	Dec. 31, 2020
Periods Ended September 30, 2020 ad December 31, 2020 [Member]
Maximum Leverage Ratio	3.50
Periods Ended March 31, 2021 and June 30, 2021 [Member]
Maximum Leverage Ratio	3.25
Periods Ended September 30, 2021 and December 31, 2021 [Member]
Maximum Leverage Ratio	3
Period Ended March 31, 2022 and Thereafter [Member]
Maximum Leverage Ratio	2.50

Note 5 - Bank Debt - Schedule o

Note 5 - Bank Debt - Schedule of Future Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
2021	$ 36,750
2022	25,725
2023	75,263
Total	$ 137,738	$ 180,150

Note 6 - Accounts Payable and_3

Note 6 - Accounts Payable and Accrued Liabilities - Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts payable	$ 14,785	$ 16,115
Accrued property taxes	2,566	2,835
Accrued payroll	1,621	2,151
Workers' compensation reserve	2,988	3,446
Group health insurance	1,800	2,500
Other	7,649	4,753
Total accounts payable and accrued liabilities	$ 31,409	$ 31,800

Note 7 - Revenue 1 (Details Tex

Note 7 - Revenue 1 (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Contract with Customer, Liability, Current	$ 0.3
Coal [Member] \| INDIANA \| Revenue from Contract with Customer Benchmark [Member] \| Geographic Concentration Risk [Member]
Concentration Risk, Percentage	74.00%	74.00%

Note 7 - Revenue 2 (Details Tex

Note 7 - Revenue 2 (Details Textual) $ in Millions	Dec. 31, 2020USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 \| Fixed-price Contract [Member]
Revenue, Remaining Performance Obligation, Amount	$ 493
Revenue, Remaining Performance Obligation, Percentage	78.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 \| Contracts with Price Reopeners [Member]
Revenue, Remaining Performance Obligation, Amount	$ 237
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)	1 year

Note 8 - Other Operating Inco_3

Note 8 - Other Operating Income - Other Operating Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Equity income (loss) - Sunrise Energy	$ 1,054	$ (527)
MSHA reimbursements	400	575
Gain on sale of royalty interests in oil properties	0	2,949
Miscellaneous	1,757	3,029
Other Operating Income	$ 3,211	$ 6,026

Note 9 - Income Taxes (Details

Note 9 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Effective Income Tax Rate Reconciliation, Percent, Total	30.00%	27.00%
Deferred Tax Assets, Valuation Allowance, Total	$ 1,275	$ 0
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	89,000
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	$ 123,000

Note 9 - Income Taxes - Differe

Note 9 - Income Taxes - Difference Between Expected Amount and Actual Amount, Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Expected amount	$ (1,865)	$ (17,262)
State income taxes, net of federal benefit	(644)	(3,831)
Percentage depletion	(2,154)	(1,475)
Valuation allowance	1,275	0
Stock-based compensation	67	326
Return to provision adjustments	(60)	(78)
Other	723	(27)
Total income tax benefit	$ (2,658)	$ (22,347)

Note 9 - Income Taxes - Deferre

Note 9 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Long-term deferred tax assets:
Net operating loss	$ 24,081	$ 18,956
Valuation allowance	(1,275)	0
Interest limitation carryforward	0	1,801
Capital loss carryforward	525	555
Alternative minimum tax credit	0	524
Stock-based compensation	179	135
Other	529	1,029
Total long-term deferred tax assets:	24,039	23,000
Coal properties	(26,863)	(27,884)
Net deferred tax liability	$ (2,824)	$ (4,884)

Note 10 - Stock Compensation _3

Note 10 - Stock Compensation Plans (Details Textual) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Mar. 04, 2021	Dec. 31, 2009
Share-based Payment Arrangement, Expense		$ 1.2	$ 1.8
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)		0
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)					250,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)		86,383
Forecast [Member]
Share-based Payment Arrangement, Expense	$ 1.1
Subsequent Event [Member]
Share Price (in dollars per share)				$ 1.63
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value		$ 0.2	$ 0.9
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)		4,850,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)		1,434,701
Restricted Stock Units (RSUs) [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding				$ 0.5

Note 10 - Stock Compensation _4

Note 10 - Stock Compensation Plans - Schedule of Restricted Stock Units (Details) - shares	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2009
Total authorized RSUs in Plan approved by shareholders (in shares)				250,000
RSUs available for future issuance (in shares)	86,383
Restricted Stock Units (RSUs) [Member]
Total authorized RSUs in Plan approved by shareholders (in shares)	4,850,000
Stock issued out of the Plan from vested grants (in shares)	(3,091,049)
Non-vested grants (in shares)	(324,250)	(488,500)	(789,250)
RSUs available for future issuance (in shares)	1,434,701

Note 10 - Stock Compensation _5

Note 10 - Stock Compensation Plans - RSU Activity (Details) - Restricted Stock Units (RSUs) [Member] - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Non-vested grants (in shares)	488,500	789,250
Granted (in shares)	40,000	17,000
Vested (in shares)	(193,250)	(297,250)
Forfeited (in shares)	(11,000)	(20,500)
Non-vested grants (in shares)	324,250	488,500

Note 10 - Stock Compensation _6

Note 10 - Stock Compensation Plans - Vesting of Non-vested RSU Grants (Details) - Restricted Stock Units (RSUs) [Member]	Dec. 31, 2020shares
RSUs vesting (in shares)	324,250
Vesting in 2021 [Member]
RSUs vesting (in shares)	305,250
Vesting in 2022 [Member]
RSUs vesting (in shares)	9,000
Vesting in 2023 [Member]
RSUs vesting (in shares)	10,000

Note 11 - Employee Benefits (De

Note 11 - Employee Benefits (Details Textual)	12 Months Ended
Note 11 - Employee Benefits (Details Textual)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	100.00%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	4.00%
Participants in Employee Health Plan	2,221
Health Care Cap Per Person	$ 200,000
Insured Capped Maximum Exposure, Health Care	19,000,000
Employee Benefit Costs	15,649,000	$ 19,465,000
Workers' compensation costs	1,900,000	3,100,000
Insured Maximum Exposure Per Employee	1,000,000
Aggregate Insurance Deductible for Employees	$ 4,000,000
Percentage Claims Are Below Average of Peers, Underground Coal Mining	24.00%
Operating Expense [Member]
Employee Benefit Costs	$ 15,000,000	$ 18,900,000

Note 11 - Employee Benefits - E

Note 11 - Employee Benefits - Employee Benefit Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Health benefits, including premiums	$ 13,173	$ 16,228
401(k) matching	1,797	2,510
Deferred bonus plan	679	727
Total	$ 15,649	$ 19,465

Note 12 - Leases (Details Textu

Note 12 - Leases (Details Textual)	Dec. 31, 2020USD ($)
Buildings and Equipment [Member]
Operating Lease, Right-of-Use Asset	$ 602,000
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	5 years

Note 12 - Leases - Information

Note 12 - Leases - Information Related to Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Operating cash outflows from operating leases	$ 235
Weighted average remaining lease term in years (Year)	3 years 2 months 4 days
Weighted average discount rate	6.00%

Note 12 - Leases - Future Minim

Note 12 - Leases - Future Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2020USD ($)
2021	$ 203
2022	206
2023	173
2024	60
Total minimum lease payments	642
Less imputed interest	(40)
Other Noncurrent Liabilities [Member]
Total operating lease liability	602
Other long-term liabilities	$ 602

Note 13 - Self-insurance (Detai

Note 13 - Self-insurance (Details Textual) $ in Thousands	Dec. 31, 2020USD ($)item	Dec. 31, 2019USD ($)
Property, Plant and Equipment, Gross, Ending Balance	$ 561,603	$ 550,496
Restricted Cash and Cash Equivalents, Total	4,030	4,512
Future Workers' Compensation Claim Payments [Member]
Restricted Cash and Cash Equivalents, Total	$ 4,000	4,500
Mining Properties and Mineral Rights [Member]
Number of Mining Units	7
Area of Real Estate Property \| item	10
Property, Plant and Equipment, Gross, Ending Balance	$ 269,000	$ 273,000

Note 14 - Net Loss Per Share -

Note 14 - Net Loss Per Share - Computation of Net Income(Loss) Allocated to Common Shareholders (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Net loss	$ (6,220)	$ (59,854)
Less loss allocated to RSUs	94	907
Net loss allocated to common shareholders	$ (6,126)	$ (58,947)
Weighted average number of common shares outstanding (in shares)	30,446	30,253
Basic and diluted (in dollars per share)	$ (0.20)	$ (1.95)

Note 15 - Fair Value Measurem_3

Note 15 - Fair Value Measurements (Details Textual) gal in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)$ / galgal
Interest Rate Swap [Member]
Derivative, Number of Instruments Held, Total	2
Interest Rate Swap, One [Member]
Derivative, Notional Amount \| $	$ 53
Interest Rate Swap, Two [Member]
Derivative, Notional Amount \| $	$ 68
Fuel Hedge [Member]
Derivative, Nonmonetary Notional Amount, Volume (Gallon) \| gal	1
Fuel Hedge [Member] \| Minimum [Member]
Underlying, Derivative Volume (in USD per Gallon) \| $ / gal	1.79
Fuel Hedge [Member] \| Maximum [Member]
Underlying, Derivative Volume (in USD per Gallon) \| $ / gal	2

Note 15 - Fair Value Measurem_4

Note 15 - Fair Value Measurements - Financial Assets and Liabilities Measured on a Recurring Basis at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Derivate liabilities	$ 4,190
Marketable securities - restricted (Note 4)		$ 2,296
Assets, Fair Value Disclosure		2,321
Fuel Hedge [Member]
Derivate liabilities	297
Fuel hedge		25
Interest Rate Swap [Member]
Derivate liabilities	3,893	3,825
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Derivate liabilities	0
Marketable securities - restricted (Note 4)		2,296
Assets, Fair Value Disclosure		2,296
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Fuel Hedge [Member]
Derivate liabilities	0
Fuel hedge		0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Interest Rate Swap [Member]
Derivate liabilities	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Derivate liabilities	0
Marketable securities - restricted (Note 4)		0
Assets, Fair Value Disclosure		0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Fuel Hedge [Member]
Derivate liabilities	0
Fuel hedge		0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest Rate Swap [Member]
Derivate liabilities	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Derivate liabilities	4,190
Marketable securities - restricted (Note 4)		0
Assets, Fair Value Disclosure		25
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Fuel Hedge [Member]
Derivate liabilities	297
Fuel hedge		25
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Interest Rate Swap [Member]
Derivate liabilities	$ 3,893	$ 3,825

Note 15 - Fair Value Measurem_5

Note 15 - Fair Value Measurements - Change in Fair Value of the Fuel Hedges and Interest Rate Swaps (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019
Balance	$ (3,800)		$ (1,639)
Change in estimated fair value	(390)		(2,161)
Balance	$ (4,190)	[1]	$ (3,800)

[1]	Recorded in accounts payable and accrued liabilities and other liabilities in the Balance Sheet to these Consolidated Financial Statements.

Note 16 - Equity Method Inves_2

Note 16 - Equity Method Investments (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Equity Method Investments	$ 3,181	$ 3,139
Sunrise Energy, LLC [Member]
Equity Method Investment, Ownership Percentage	50.00%
Equity Method Investments	$ 3,200	$ 3,100

Note 17 - Hourglass Sands (Deta

Note 17 - Hourglass Sands (Details Textual) - USD ($) $ in Thousands	1 Months Ended			2 Months Ended	3 Months Ended	12 Months Ended
	Aug. 31, 2020	Dec. 31, 2019	Feb. 28, 2018	Feb. 28, 2018	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Asset Impairment Charges, Total						$ 1,799	$ 77,882
Hourglass Sands [Member]
Asset Impairment Charges, Total	$ 1,800	$ 2,900			$ 1,800		$ 2,900
Hourglass Sands [Member]
Capitalization, Long-term Debt and Equity, Total			$ 8,000	$ 8,000
Capital Unit, Class A [Member] \| Hourglass Sands [Member]
Noncontrolling Interest, Ownership Percentage by Parent						100.00%
Percentage of Profit Until Capital Investment and Interest is Returned						100.00%
Percentage of Profit After Capital Investment and Interest is Returned						90.00%
Hourglass Sands LLC [Member]
Business Combination, Consideration Transferred, Total			4,000	$ 4,000
Hourglass Sands LLC [Member] \| Director [Member]
Business Combination, Consideration Transferred, Total			$ 4,000