Heritage-Crystal Clean (HCCI) 10-Q19 Oct 222022 Q3 Quarterly reportFinancial data

Company Profile

Cover

Cover - shares	8 Months Ended
Cover - shares	Sep. 10, 2022	Oct. 18, 2022
Entity Addresses [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 10, 2022
Document Transition Report	false
Entity File Number	001-33987
Entity Registrant Name	HERITAGE-CRYSTAL CLEAN, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-0351454
Entity Address, Address Line One	2000 Center Drive
Entity Address, Address Line Two	Suite East C300
Entity Address, City or Town	Hoffman Estates
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60192
City Area Code	847
Local Phone Number	836-5670
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	HCCI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		24,177,299
Entity Central Index Key	0001403431
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Amendment Flag	false
Former Address
Entity Addresses [Line Items]
Entity Address, Address Line One	2175 Point Boulevard.
Entity Address, Address Line Two	Suite 375
Entity Address, City or Town	Elgin
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60123

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 10, 2022	Jan. 01, 2022
Current assets:
Cash and cash equivalents	$ 25,714	$ 56,269
Accounts receivable - net	118,716	62,513
Inventory - net	42,470	29,536
Assets held for sale	1,125	1,125
Other current assets	15,033	6,773
Total current assets	203,058	156,216
Property, plant and equipment - net	233,039	166,301
Right of use assets	117,430	83,865
Equipment at customers - net	26,010	24,146
Software and intangible assets - net	43,352	45,949
Goodwill	133,126	49,695
Investments at fair value	3,000	0
Other assets	0	692
Total assets	759,015	526,864
Current liabilities:
Accounts payable	56,753	36,179
Current portion of lease liabilities	26,709	20,146
Contract liabilities - net	2,637	2,094
Accrued salaries, wages, and benefits	11,926	8,980
Taxes payable	17,320	8,474
Other current liabilities	13,154	9,476
Revolving credit facility	99,324	0
Total current liabilities	227,823	85,349
Lease liabilities, net of current portion	93,952	65,041
Other long term liabilities	828	473
Contingent consideration	0	2,819
Deferred income taxes	34,467	31,126
Total liabilities	357,070	184,808
STOCKHOLDERS' EQUITY:
Common stock - 26,000,000 shares authorized at $0.01 par value, 23,595,968 and 23,473,931 shares issued and outstanding at September 10, 2022 and January 1, 2022, respectively	236	235
Additional paid-in capital	207,704	204,920
Retained earnings	194,253	137,067
Accumulated other comprehensive loss	(248)	(166)
Total stockholders' equity	401,945	342,056
Total liabilities and stockholders' equity	$ 759,015	$ 526,864

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 10, 2022	Jan. 01, 2022
Statement of Financial Position [Abstract]
Common stock, shares authorized (in shares)	26,000,000	26,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares issued (in shares)	23,595,968	23,473,931
Common stock, shares outstanding (in shares)	23,595,968	23,473,931

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		8 Months Ended
	Sep. 10, 2022	Sep. 11, 2021	Sep. 10, 2022	Sep. 11, 2021
Revenues
Revenues	$ 165,760	$ 117,450	$ 449,523	$ 328,998
Rental income	6,459	5,725	18,710	16,836
Total revenues	172,219	123,175	468,233	345,834
Operating expenses
Operating costs	114,147	79,486	320,684	234,584
Selling, general, and administrative expenses	17,086	13,294	45,846	38,522
Depreciation and amortization	8,262	5,767	21,546	15,168
Other (income) expense - net	(329)	(230)	462	(669)
Operating income	33,053	24,858	79,695	58,229
Interest expense – net	885	206	1,358	707
Income before income taxes	32,168	24,652	78,337	57,522
Provision for income taxes	8,967	6,144	21,151	14,697
Net income	$ 23,201	$ 18,508	$ 57,186	$ 42,825
Net income per share: basic (in dollars per share)	$ 0.98	$ 0.79	$ 2.43	$ 1.83
Net income per share: diluted (in dollars per share)	$ 0.98	$ 0.79	$ 2.42	$ 1.82
Number of weighted average shares outstanding: basic (in shares)	23,592	23,431	23,519	23,403
Number of weighted average shares outstanding: diluted (in shares)	23,674	23,570	23,651	23,548
Service revenues
Revenues
Revenues	$ 90,084	$ 59,737	$ 234,575	$ 177,469
Product revenues
Revenues
Revenues	$ 75,676	$ 57,713	$ 214,948	$ 151,529

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		8 Months Ended
	Sep. 10, 2022	Sep. 11, 2021	Sep. 10, 2022	Sep. 11, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 23,201	$ 18,508	$ 57,186	$ 42,825
Other comprehensive loss:
Currency translation adjustments	(7)	(143)	(82)	(143)
Total other comprehensive loss:	(7)	(143)	(82)	(143)
Comprehensive income	$ 23,194	$ 18,365	$ 57,104	$ 42,682

Condensed Consolidated Statem_3

Condensed Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid–in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Jan. 02, 2021		23,340,700
Beginning balance at Jan. 02, 2021	$ 277,500	$ 233	$ 201,148	$ 76,119	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	42,825			42,825
Currency translation adjustment	(143)				(143)
Issuance of common stock – ESPP (in shares)		15,146
Issuance of common stock – ESPP	371		371
Share-based compensation (in shares)		95,023
Share repurchases to satisfy tax withholding obligations	3,607	$ 1	3,606
Share repurchases to satisfy tax withholding obligations	(1,596)		(1,596)
Ending balance (in shares) at Sep. 11, 2021		23,450,869
Ending balance at Sep. 11, 2021	322,564	$ 234	203,529	118,944	(143)
Beginning balance (in shares) at Jun. 19, 2021		23,410,606
Beginning balance at Jun. 19, 2021	304,026	$ 234	203,356	100,436	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	18,508			18,508
Currency translation adjustment	(143)				(143)
Distribution	0
Issuance of common stock – ESPP (in shares)		4,324
Issuance of common stock – ESPP	124		124
Share-based compensation (in shares)		35,939
Share repurchases to satisfy tax withholding obligations	916		916
Share repurchases to satisfy tax withholding obligations	(867)		(867)
Ending balance (in shares) at Sep. 11, 2021		23,450,869
Ending balance at Sep. 11, 2021	$ 322,564	$ 234	203,529	118,944	(143)
Beginning balance (in shares) at Jan. 01, 2022	23,473,931	23,473,931
Beginning balance at Jan. 01, 2022	$ 342,056	$ 235	204,920	137,067	(166)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	57,186			57,186
Currency translation adjustment	(82)				(82)
Issuance of common stock – ESPP (in shares)		110,550
Issuance of common stock – ESPP	397	$ 1	396
Share-based compensation (in shares)		11,487
Share repurchases to satisfy tax withholding obligations	3,790		3,790
Share repurchases to satisfy tax withholding obligations	$ (1,402)		(1,402)
Ending balance (in shares) at Sep. 10, 2022	23,595,968	23,595,968
Ending balance at Sep. 10, 2022	$ 401,945	$ 236	207,704	194,253	(248)
Beginning balance (in shares) at Jun. 18, 2022		23,494,045
Beginning balance at Jun. 18, 2022	377,342	$ 235	206,296	171,052	(241)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	23,201			23,201
Currency translation adjustment	(7)				(7)
Distribution	0
Issuance of common stock – ESPP (in shares)		101,923
Issuance of common stock – ESPP	146	$ 1	145
Share repurchases to satisfy tax withholding obligations	1,263		1,263
Share repurchases to satisfy tax withholding obligations	$ 0
Ending balance (in shares) at Sep. 10, 2022	23,595,968	23,595,968
Ending balance at Sep. 10, 2022	$ 401,945	$ 236	$ 207,704	$ 194,253	$ (248)

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		8 Months Ended		12 Months Ended
	Sep. 10, 2022	Sep. 11, 2021	Sep. 10, 2022	Sep. 11, 2021	Jan. 01, 2022
Cash flows from Operating Activities:
Net income	$ 23,201	$ 18,508	$ 57,186	$ 42,825
Depreciation and amortization	8,262	5,767	21,546	15,168
Provision for civil action settlement			1,100	0
Uncollectible provision			1,115	1,069	$ 1,930
Share-based compensation			4,166	3,922
Deferred taxes			2,292	6,068
Other, net			1,063	(165)
Changes in operating assets and liabilities:
(Increase) in accounts receivable			(31,013)	(12,883)
(Increase) in inventory			(12,934)	(2,803)
(Increase) in other current assets			(6,314)	(1,032)
Increase in accounts payable			15,084	2,254
Increase in accrued liabilities			5,092	8,704
Cash provided by operating activities			58,383	63,127
Cash flows from Investing Activities:
Capital expenditures			(24,156)	(12,039)
Proceeds from sale of assets			177	1,612
Investment in Retriev			(3,000)	0
Business acquisitions, net of cash acquired			(157,854)	(11,373)
Cash used in investing activities			(184,833)	(21,800)
Cash flows from Financing Activities:
Payment of Term Loan			0	(30,000)
Net change in line of credit			100,000	0
Debt issuance costs			(100)	(822)
Repayment of principal on finance leases			(3,000)	(1,582)
Share repurchases to satisfy tax withholding obligations			(1,402)	(1,596)
Proceeds from the issuance of common stock			397	371
Cash provided by (used in) financing activities			95,895	(33,629)
Net (decrease) increase in cash and cash equivalents			(30,555)	7,698
Cash and cash equivalents, beginning of period			56,269	67,575	67,575
Cash and cash equivalents, end of period	$ 25,714	$ 75,273	25,714	75,273	$ 56,269
Supplemental disclosure of cash flow information:
Income taxes paid			11,796	637
Cash paid for interest			627	125
Supplemental disclosure of non-cash information:
Payables for construction in progress			$ 2,865	$ 719

ORGANIZATION AND NATURE OF OPER

ORGANIZATION AND NATURE OF OPERATIONS	8 Months Ended
ORGANIZATION AND NATURE OF OPERATIONS	Sep. 10, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ORGANIZATION AND NATURE OF OPERATIONS	ORGANIZATION AND NATURE OF OPERATIONS Heritage-Crystal Clean, Inc., a Delaware corporation and its subsidiaries (collectively the “Company”), provide parts cleaning, used oil re-refining, hazardous and non-hazardous waste disposal, emergency and spill response, and industrial and field services to vehicle maintenance businesses, manufacturers and other industrial businesses, as well as utilities and governmental entities. The Company owns and operates a used oil re-refinery where it re-refines used oils and sells high quality base oil for use in the manufacture of finished lubricants as well as other re-refinery products. The Company also has multiple locations where it dehydrates used oil. The oil processed at these locations is primarily sold as recycled fuel oil. The Company also operates ten non-hazardous waste processing facilities, as well as five antifreeze recycling facilities at which it produces virgin-quality antifreeze. The Company's locations are in the United States and Ontario, Canada. The Company conducts its primary business operations through Heritage-Crystal Clean, LLC, its wholly owned subsidiary, and all intercompany balances have been eliminated in consolidation. The Company has two reportable segments: "Environmental Services" and "Oil Business." The Environmental Services segment consists of the Company's parts cleaning, hazardous and non-hazardous waste disposal, wastewater vacuum, antifreeze recycling activities, emergency and spill response, and industrial and field services. The Oil Business segment consists of the Company's used oil collection, recycled fuel oil sales, used oil re-refining activities, and used oil filter removal and disposal services. No customer represented greater than 10% of consolidated revenues for any of the periods presented. There were no intersegment revenues. Both segments operate in the United States and, to an immaterial degree, in Ontario, Canada. As such, the Company is not disclosing operating results by geographic segment. The Company’s fiscal year ends on the Saturday closest to December 31. The most recent fiscal year ended on January 1, 2022. Each of the Company's first three fiscal quarters consists of twelve weeks while the last fiscal quarter consists of sixteen or seventeen weeks. In the Company's Environmental Services segment, product revenues include sales of solvent, machines, absorbent, accessories, and antifreeze; service revenues include servicing of parts cleaning machines, hazardous and non-hazardous waste removal services, wastewater vacuum services, emergency and spill response, and industrial and field services; rental income includes embedded lease income from certain of our parts cleaning contracts. In the Company's Oil Business segment, product revenues primarily consist of sales of re-refined base oil, re-refinery co-products and recycled fuel oil; service revenues include revenues from used oil collection activities, collecting and disposing of wastewater and removal and disposal of used oil filters. Due to the Company's integrated business model, it is impracticable to separately present costs of tangible products and costs of services. COVID-19 Pandemic We are closely monitoring the spread and impact of the COVID-19 pandemic and are continually assessing its potential effects on our business and our financial performance as well as the businesses of our customers and vendors. The Company cannot predict the duration or severity of the COVID-19 pandemic, and we cannot reasonably estimate the financial impact the COVID-19 outbreak will have on our results and significant estimates going forward. The ultimate impact of the COVID-19 pandemic on our business, results of operations, financial condition and cash flows is highly uncertain and cannot be accurately predicted and is dependent on future developments, including the duration of the pandemic and the related length of its impact on the global economy, and any new information that may emerge concerning the COVID-19 outbreak and the actions to contain it or treat its impact. In fiscal 2021, the continued impact on our business as a result of COVID-19 pandemic resulted in additional lost work hours which negatively impacted our ability to service our customers on a timely basis, the effect of which is included in the fiscal 2021 financial operations in this filing. Although no material impact on our business occurred during the third quarter of 2022 or during the first three quarters of 2022, the continued impact on our business as a result of the COVID-19 pandemic could result in a material adverse effect on our business, results of operations, financial condition, prospects and the trading prices of our securities in the near-term and throughout 2022.

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	8 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	Sep. 10, 2022
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The Company's significant accounting policies are described in Note 2, "Summary of Significant Accounting Policies," in the Company's Annual Report on Form 10-K for the fiscal year ended January 1, 2022. There have been no material changes in these policies or their application during the third quarter of fiscal 2022.

BUSINESS COMBINATIONS

BUSINESS COMBINATIONS	8 Months Ended
BUSINESS COMBINATIONS	Sep. 10, 2022
Business Combination and Asset Acquisition [Abstract]
BUSINESS COMBINATIONS	BUSINESS COMBINATIONS On August 3, 2022, Heritage-Crystal Clean, LLC, completed its acquisition of all of the issued and outstanding shares of the capital stock of Patriot Environmental Services, Inc. ("Patriot"), a leading provider of environmental services across the Western United States specializing in emergency response, industrial services, OSRO spill response and a wide variety of waste services. Total consideration for the acquisition was approximately $157.9 million in cash subject to various adjustments such as a working capital adjustment and seller indemnification obligations. To date, there have been no adjustments to the purchase price. Goodwill recognized from the acquisition of Patriot, represents the excess of the estimated purchase consideration transferred over the estimated fair value of the assets acquired and liabilities assumed. The Company has not yet completed the fair value valuation with a 3rd party specialist and therefore is still in the process of finalizing the purchase price allocation for the acquisition as of September 10, 2022. Furthermore, acquisition deferred taxes are not yet finalized as of September 10, 2022. Factors leading to goodwill being recognized are the Company’s expectation of synergies from combining operations of Patriot, and the Company as well as the value of intangible assets that are not separately recognized, such as the assembled workforce. Transaction costs incurred in conjunction with the acquisition of Patriot were approximately $0.9 million. The results of Patriot are consolidated into the Company’s Environmental Services segment from the date of acquisition. On September 27, 2021, the Company completed the acquisition of Source Environmental, Inc., ("Source Environmental"), which increased the Company's penetration in the hazardous and non-hazardous waste business in several markets in the Western U.S. This transaction also provided the Company with the opportunity to internalize the performance of certain field service activities in the Western U.S. Total consideration for the acquisition was approximately $20.4 million. To date, there have been no adjustments to the purchase price. Factors leading to goodwill being recognized are the Company’s expectation of synergies from combining operations of Source Environmental, and the Company as well as the value of intangible assets that are not separately recognized, such as the assembled workforce. Transaction costs incurred in conjunction with the acquisition of Source Environmental were immaterial. The results of Source Environmental are consolidated into the Company’s Environmental Services segment from the date of acquisition. On September 13, 2021, the Company completed the acquisition of Raider Environmental Services of Florida, Inc., ("Raider Environmental"), which expanded the Company's network of wastewater processing, oil collection and non-hazardous waste consolidation and solidification to better serve the Company's customers in Florida and throughout the Southern United States. Total consideration for the acquisition was approximately $13.7 million. To date, there have been no adjustments to the purchase price. This acquisition provided the Company another wastewater treatment facility as well as assets to help further the Company's initiative to increase its non-hazardous containerized waste processing capabilities. This also provided the Company with exposure to industry verticals in which it didn't previously participate. Factors leading to goodwill being recognized are the Company’s expectation of synergies from combining operations of Raider Environmental, and the Company as well as the value of intangible assets that are not separately recognized, such as the assembled workforce. Transaction costs incurred in conjunction with the acquisition of Raider Environmental were immaterial. The results of Raider Environmental are consolidated primarily into the Company’s Environmental Services segment and an immaterial amount in the Oil Business segment from the date of acquisition. On August 24, 2021, Heritage-Crystal Clean completed the acquisition of certain assets of Bakersfield Transfer, Inc., and Cole’s Services, Inc., together known as ("Cole's Environmental"), which processed, stored, and disposed of hazardous waste within the state of California. The purchase price was $17.3 million subject to certain adjustments, including a contingent consideration provision. Goodwill recognized from the acquisition of Cole's Environmental, represents the excess of the estimated purchase consideration transferred over the estimated fair value of the assets acquired and liabilities assumed. To date, there have been no adjustments to the purchase price. Factors leading to goodwill being recognized are the Company’s expectation of synergies from combining operations of Cole's Environmental, and the Company as well as the value of intangible assets that are not separately recognized, such as the assembled workforce. The results of Cole's Environmental are consolidated primarily into the Company’s Environmental Services segment and an immaterial amount in the Oil Business segment from the date of acquisition. The following table summarizes the estimated fair values of the assets acquired, net of cash acquired, related to each acquisition as of September 10, 2022: As of September 10, 2022 (thousands) Source Environmental, Inc. (1) Raider Environmental Services of Florida, Inc. (1) Cole's Environmental (1) Patriot Environmental Services, Inc. (2) Accounts receivable $ 1,064 $ 488 $ — $ 26,305 Inventory — — 73 — Other current assets 6 162 — 1,947 Property, plant, & equipment 174 4,404 2,455 57,932 Intangible assets 13,692 6,056 9,620 — Goodwill 6,174 2,835 5,144 83,431 Accounts payable and accruals (677) (218) — (11,761) Total purchase price, net of cash acquired $ 20,433 $ 13,727 $ 17,292 $ 157,854 Less: contingent consideration — — 4,464 — Less: placed in escrow — — 100 2,780 Net cash paid $ 20,433 $ 13,727 $ 12,728 $ 155,074 (1) The above purchase price allocations are final as of September 10, 2022. (2) The Company is still in the process of finalizing the purchase price allocation for the acquisition and therefore all balances are provisional. Unaudited Pro Forma Financial Information The pro forma financial information in the table below presents the combined results of the Company as if the Patriot acquisition had occurred on January 2, 2021. The pro forma information is shown for illustrative purposes only and is not necessarily indicative of future results of operations of the Company or results of operations of the Company that would have actually occurred had the transactions been in effect for the periods presented. Third Quarter Ended, (thousands, except per share data) September 10, 2022 September 11, 2021 Total revenues $ 179,832 $ 148,005 Net income $ 21,796 $ 20,744 Net income per share: basic $ 0.92 $ 0.89 Net income per share: diluted $ 0.92 $ 0.88 First Three Quarters Ended, (thousands, except per share data) September 10, 2022 September 11, 2021 Total revenues $ 541,008 $ 418,878 Net income $ 56,409 $ 44,734 Net income per share: basic $ 2.40 $ 1.91 Net income per share: diluted $ 2.39 $ 1.90 The following sets forth certain adjustments made in the preparation of the unaudited pro forma financial statements. All pro forma adjustments are based on preliminary estimates and assumptions and are subject to revision upon finalization of the purchase accounting for the Acquisition: • Reflects adjustments to selling, general, and administrative expenses to exclude transaction costs of $0.9 million incurred to execute the purchase that were expensed in the first three quarters of fiscal 2022. Additional adjustment of estimated cost savings of $3.6 million related to layoffs of personnel as a result of the acquisition. • Pro forma adjustment related to estimated additional depreciation expense as a result of the $31.8 million of step up to fair value of the property, plant, and equipment with an average estimated useful life of 7 years. • Pro forma adjustment related to estimated additional interest expense as a result of the draw on the line of credit in order to fund the acquisition.

REVENUE

REVENUE	8 Months Ended
REVENUE	Sep. 10, 2022
Revenue from Contract with Customer [Abstract]
REVENUE	REVENUE We account for a contract when it has approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability of consideration is probable. Revenue is recognized when our performance obligations under the terms of a contract with our customers are satisfied. Recognition occurs when the Company transfers control by completing the specified services at the point in time the customer benefits from the services performed or once our products are delivered. The majority of revenue is recognized at a point in time, except for rental income which is recognized on an over time basis. The Company measures progress toward complete satisfaction of a performance obligation satisfied over time using a cost-based input method. This method of measuring progress provides a faithful depiction of the transfer of goods or services because the costs incurred are expected to be substantially proportionate to the Company’s satisfaction of the performance obligation. Revenue is measured as the amount of consideration we expect to receive in exchange for completing our performance obligations. Sales tax and other taxes we collect with revenue-producing activities are excluded from revenue. In the case of contracts with multiple performance obligations, the Company allocates the transaction price to each performance obligation based on the relative stand-alone selling prices of the various goods and/or services encompassed by the contract. We do not have any material significant payment terms as payment is generally due within 30 days after the performance obligation has been satisfactorily completed. The Company has elected the practical expedient to recognize the incremental costs of obtaining a contract as an expense when incurred if the amortization period of the asset that we otherwise would have recognized is one year or less. In applying the guidance in Topic 606, there were no judgments or estimates made that the Company deems significant. Contract Balances — Contract assets primarily relate to the Company’s rights to consideration for work completed in relation to its services performed but not billed at the reporting date. Contract liabilities primarily consist of advance payments of performance obligations yet to be fully satisfied in the period reported. Our contract liabilities and contract assets are reported in a net position at the end of each reporting period. We disaggregate our revenue from contracts with customers by major lines of business for each of our segments, as we believe it best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. The following table disaggregates our revenue by major lines: Third Quarter Ended, September 10, 2022 September 11, 2021 Total Net Sales by Major Lines of Business (thousands) Environmental Services Oil Business Total Environmental Services Oil Business Total Parts Cleaning, Containerized Waste, & related products/services $ 51,731 $ — $ 51,731 $ 40,232 $ — $ 40,232 Wastewater Vacuum Services 21,169 — 21,169 15,131 — 15,131 Field Services 19,822 — 19,822 5,063 — 5,063 Antifreeze Business 7,036 — 7,036 5,730 — 5,730 Environmental Services - Other 475 — 475 458 — 458 Re-Refinery Product Sales — 62,618 62,618 — 45,275 45,275 Oil Collection Services & RFO — 1,712 1,712 — 4,425 4,425 Oil Filter Business — 1,197 1,197 — 1,136 1,136 Revenues from Contracts with Customers 100,233 65,527 165,760 66,614 50,836 117,450 Rental income 6,445 14 6,459 5,725 — 5,725 Total Revenues $ 106,678 $ 65,541 $ 172,219 $ 72,339 $ 50,836 $ 123,175 First Three Quarters Ended, September 10, 2022 September 11, 2021 Total Net Sales by Major Lines of Business (thousands) Environmental Services Oil Business Total Environmental Services Oil Business Total Parts cleaning, containerized waste, & related products/services $ 148,908 $ — $ 148,908 $ 119,805 $ — $ 119,805 Wastewater Vacuum Services 59,710 — 59,710 43,671 — 43,671 Field Services 32,651 — 32,651 13,908 — 13,908 Antifreeze Business 21,810 — 21,810 19,003 — 19,003 Environmental Services - Other 1,456 — 1,456 1,306 — 1,306 Re-refinery Product Sales — 165,955 165,955 — 114,158 114,158 Oil Collection Services & RFO — 15,278 15,278 — 13,594 13,594 Oil Filter Business — 3,755 3,755 — 3,553 3,553 Revenues from Contracts with Customers 264,535 184,988 449,523 197,693 131,305 328,998 Rental income 18,673 37 18,710 16,818 18 16,836 Total Revenues $ 283,208 $ 185,025 $ 468,233 $ 214,511 $ 131,323 $ 345,834 The following table provides information about contract assets and contract liabilities from contracts with customers: (thousands) September 10, 2022 January 1, 2022 Contract assets $ 84 $ 268 Contract liabilities 2,721 2,362 Contract liabilities - net $ 2,637 $ 2,094 During the fiscal quarter ended September 10, 2022, the Company recognized no revenue that was included in the contract liabilities balance as of January 1, 2022. During the first three quarters ended September 10, 2022, the Company recognized $2.4 million of revenue that was included in the contract liabilities balance as of January 1, 2022. The Company has no assets recognized from costs to obtain or fulfill a contract with a customer. We do not disclose the value of unsatisfied performance obligations for contracts with an original expected length of one year or less.

ACCOUNTS RECEIVABLE

ACCOUNTS RECEIVABLE	8 Months Ended
ACCOUNTS RECEIVABLE	Sep. 10, 2022
Accounts Receivable, after Allowance for Credit Loss [Abstract]
ACCOUNTS RECEIVABLE	ACCOUNTS RECEIVABLE Accounts Receivable — Net, includes amounts billed to and currently due from customers. The amounts due are stated at their net estimated realizable value. The allowance for uncollectible accounts is our best estimate of the amount of probable lifetime-expected credit losses in existing accounts receivable and is determined based on our historical collections experience, age of the receivable, knowledge of the customer and the condition of the general economy and industry as a whole. The Company does not have any off-balance-sheet credit exposure related to its customers. Accounts receivable for the third quarter ended September 10, 2022, and the fiscal year ended January 1, 2022 consisted of the following: (thousands) September 10, January 1, Trade $ 115,278 $ 59,132 Less: allowance for uncollectible accounts 5,169 2,928 Trade - net 110,109 56,204 Related parties 7,817 5,410 Other 790 899 Total accounts receivable - net $ 118,716 $ 62,513 The following table provides the changes in the Company’s allowance for uncollectible accounts for the first three quarters ended September 10, 2022, and the fiscal year ended January 1, 2022: (thousands) September 10, January 1, Balance at beginning of period $ 2,928 $ 2,502 Provision for uncollectible accounts 1,115 1,930 Additions through acquisitions 1,586 — Accounts written off, net of recoveries (460) (1,504) Balance at end of period $ 5,169 $ 2,928

INVENTORY

INVENTORY	8 Months Ended
INVENTORY	Sep. 10, 2022
Inventory Disclosure [Abstract]
INVENTORY	INVENTORY The carrying value of inventory consisted of the following: (thousands) September 10, January 1, Solvents and solutions $ 11,600 $ 7,704 Used oil and processed oil 17,109 9,361 Machines 5,415 4,995 Drums and supplies 6,322 5,731 Other 2,464 2,246 Total inventory 42,910 30,037 Less: machine refurbishing reserve 440 501 Total inventory - net $ 42,470 $ 29,536 Inventory consists primarily of used oil, processed oil, solvents and solutions, new and refurbished parts cleaning machines, drums and supplies, and other items. Inventories are valued at the lower of first-in, first-out (FIFO) cost or net realizable value, net of any reserves for excess, obsolete, or unsalable inventory. The Company monitors its inventory levels at each of its locations and evaluates inventories for excess or slow-moving items. If circumstances indicate the cost of inventories exceed their recoverable value, inventories are reduced to net realizable value. The Company had no inventory write downs during the third quarter of fiscal 2022 or 2021.

GOODWILL AND OTHER INTANGIBLE A

GOODWILL AND OTHER INTANGIBLE ASSETS	8 Months Ended
GOODWILL AND OTHER INTANGIBLE ASSETS	Sep. 10, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER INTANGIBLE ASSETS	GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill is measured as a residual amount as of the acquisition date, which in most cases results in measuring goodwill as an excess of the purchase consideration transferred plus the fair value of any noncontrolling interest in the acquiree over the fair value of the net assets acquired, including any contingent consideration. The Company tests goodwill for impairment annually in the fourth quarter and in interim periods if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. The Company's determination of fair value requires certain assumptions and estimates, such as margin expectations, market conditions, growth expectations, expected changes in working capital, etc., regarding expected future profitability and expected future cash flows. The Company reports and tests goodwill for impairment only in its Environmental Services reporting unit as the Oil Business segment has no recorded goodwill. The following table shows changes to our goodwill balances by segment from January 1, 2022 to September 10, 2022: (thousands) Environmental Services Total Goodwill at January 1, 2022 Gross carrying amount $ 49,695 $ 49,695 Accumulated impairment loss — — Net book value at January 1, 2022 $ 49,695 $ 49,695 Acquisitions 83,431 83,431 Goodwill at September 10, 2022 Gross carrying amount 133,126 $ 133,126 Accumulated impairment loss — — Net book value at September 10, 2022 $ 133,126 $ 133,126 The following is a summary of software and other intangible assets: September 10, 2022 January 1, 2022 (thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer & supplier relationships $ 47,168 $ 23,888 $ 23,280 $ 47,167 $ 20,725 $ 26,442 Permits 13,590 1,425 12,165 13,590 879 12,711 Software 13,411 7,057 6,354 11,721 6,399 5,322 Non-compete agreements 4,427 3,580 847 4,048 3,340 708 Patents, formulae, and licenses 1,769 951 818 1,769 906 863 Other* 606 718 (112) 996 1,093 (97) Total software and intangible assets $ 80,971 $ 37,619 $ 43,352 $ 79,291 $ 33,342 $ 45,949 *Other intangibles include an above market lease acquired in September 2021 that had a fair value of ($0.7) million upon acquisition and is being accreted over the remaining useful life of the lease. Amortization expense was $1.5 million for the third quarter ended September 10, 2022, and $1.1 million for the third quarter ended September 11, 2021. Amortization expense was $4.3 million for the first three quarters ended September 10, 2022, and $3.4 million for the first three quarters ended September 11, 2021. The weighted average useful lives of software and other intangibles are as follows: Weighted Average Useful Life (years) Permits 16 Patents, formulae, & licenses 15 Customer and supplier relationships 12 Software 9 Non-compete agreements 5 Other 7 The estimated amortization expense for the remainder of fiscal 2022 and each of the five succeeding fiscal years is as follows: (millions) Fiscal Year Amortization Expense 2022 $1.9 2023 5.7 2024 4.1 2025 3.1 2026 2.5 2027 2.5 The preceding expected amortization expense is an estimate. Actual amounts of amortization expense may differ from estimated amounts due to additional intangible asset acquisitions, the finalization of the fair value of intangible assets that have been acquired from business combinations, disposal of intangible assets, accelerated amortization of intangible assets, and other events.

ACCOUNTS PAYABLE

ACCOUNTS PAYABLE	8 Months Ended
ACCOUNTS PAYABLE	Sep. 10, 2022
Payables and Accruals [Abstract]
ACCOUNTS PAYABLE	ACCOUNTS PAYABLE Accounts payable consisted of the following: (thousands) September 10, January 1, Accounts payable $ 56,065 $ 35,613 Accounts payable - related parties 688 566 Total accounts payable $ 56,753 $ 36,179

DEBT AND FINANCING ARRANGEMENTS

DEBT AND FINANCING ARRANGEMENTS	8 Months Ended
DEBT AND FINANCING ARRANGEMENTS	Sep. 10, 2022
Debt Disclosure [Abstract]
DEBT AND FINANCING ARRANGEMENTS	DEBT AND FINANCING ARRANGEMENTS Bank Credit Facility On March 18, 2021, Heritage-Crystal Clean, LLC, (the “Company”), entered into an Amended and Restated Credit Agreement (the "Agreement"), by and among the Company, its parent, Heritage-Crystal Clean, Inc., and the Company’s subsidiaries identified therein and Bank of America, N.A., as administrative agent, JPMorgan Chase Bank, N.A., and Wells Fargo Bank, National Association. The Agreement replaced the Company's previous Credit Agreement dated as of February 21, 2017. During the first quarter of 2021 the Company paid down its previous term loan, in full, of $30.0 million. The Agreement provided for borrowings of up to $100.0 million, in the form of a revolving facility, of which $15 million can be used in the form of a Swing Line loan. The Agreement also provided for up to an additional $50.0 million of borrowings using an accordion feature upon approval of the lenders. On August 3, 2022, the Company entered into an Amendment (Amendment No. 1 to the Agreement "the Amendment") which increased the amount of borrowing under the revolving credit line to $150.0 million. The Company then utilized the credit line to finance $115.0 million of the acquisition of Patriot Environmental Services Inc. (see Note 3). The Amendment also provides for up to an additional $50.0 million of borrowings under an accordion feature upon approval of the lenders. Loans made under the Agreement, as amended, may be Base Rate Loans or Secured Overnight Financing Rate ("SOFR") Loans, at the election of the Borrower subject to certain exceptions. Base Rate Loans have an interest rate equal to (i) the higher of (a) the federal funds rate plus 0.5%, (b) the SOFR plus a margin of 1%, or (c) Bank of America's prime rate, plus a margin of 1.00%. SOFR rate loans have an interest rate equal to (i) the SOFR rate plus (ii) a variable margin of between 1.50% and 2.25% depending on the Company's total leverage ratio. Amounts borrowed under the Agreement are secured by a security interest in substantially all of the Company's tangible and intangible assets. The Company incurred $0.8 million of debt issuance costs related to the amended credit agreement in the first three quarters ended 2021. The Company incurred an additional $0.1 million of debt issuance costs related to the amendment of the credit agreement and drawdown. The Company's weighted average interest rate for all debt for the first three quarters ended September 10, 2022 was 2.7%. The Credit Agreement contains customary terms and provisions (including representations, covenants, and conditions) for transactions of this type. Certain covenants, among other things, restrict the Company's and its subsidiaries' ability to incur indebtedness, grant liens, make investments and sell assets. The Credit Agreement also contains customary events of default, covenants and representations and warranties. Financial covenants include: • An interest coverage ratio (based on interest expense and EBITDA) of at least 3.5 to 1.0; • A total leverage ratio no greater than 3.0 to 1.0, provided that in the event of a permitted acquisition having an aggregate consideration equal to $10.0 million or more, at the Borrower’s election, the foregoing 3.00 to 1.00 shall be deemed to be 3.50 to 1.00 for the fiscal quarter in which such permitted acquisition occurs and the three immediately following fiscal quarters and will thereafter revert to 3.00 to 1.00. The Credit Agreement places certain limitations on acquisitions and the payment of dividends. Debt at September 10, 2022 and January 1, 2022 consisted of the following: (thousands) September 10, 2022 January 1, 2022 Principal amount (revolving loan) $ 100,000 $ — Less: unamortized debt issuance costs 676 — Revolving loan, net of debt issuance costs $ 99,324 $ — For the third quarter ended September 10, 2022, the Company recorded interest expense of $0.9 million with respect to our credit line and related amortization of debt issuance costs. For the third quarter ended September 11, 2021, the Company recorded interest expense of $0.2 million with respect to our credit line, and related amortization of debt issuance costs. As of September 10, 2022 and January 1, 2022, the Company was in compliance with all covenants under its Credit Agreement. As of September 10, 2022 and January 1, 2022, the Company, had $6.0 million and $5.6 million, of standby letters of credit issued, respectively, and $44.0 million and $94.4 million was available for borrowing under the bank credit facility, respectively.

SEGMENT INFORMATION

SEGMENT INFORMATION	8 Months Ended
SEGMENT INFORMATION	Sep. 10, 2022
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION The Company has two reportable segments: "Environmental Services" and "Oil Business." The Environmental Services segment consists primarily of the Company's parts cleaning, hazardous and non-hazardous waste disposal, wastewater vacuum, antifreeze recycling, emergency and spill response, and industrial and field services. The Oil Business segment consists primarily of the Company's used oil collection, used oil re-refining activities, and the dehydration of used oil to be sold as recycled fuel oil. No single customer in either segment accounted for more than 10.0% of consolidated revenues in any of the periods presented. There were no intersegment revenues. Both the Environmental Services and Oil Business segments operate in the United States and, to an immaterial degree, in Ontario, Canada. As such, the Company is not disclosing operating results by geographic segment. Segment results for the third quarters ended September 10, 2022 and September 11, 2021 were as follows: Third Quarter Ended, September 10, 2022 (thousands) Environmental Oil Business Corporate and Consolidated Revenues Service revenues $ 87,530 $ 2,554 $ — $ 90,084 Product revenues 12,703 62,973 — 75,676 Rental income 6,445 14 — 6,459 Total revenues $ 106,678 $ 65,541 $ — $ 172,219 Operating expenses Operating costs 77,559 36,588 — 114,147 Operating depreciation and amortization 4,367 2,338 — 6,705 Profit before corporate selling, general, and administrative expenses $ 24,752 $ 26,615 $ — $ 51,367 Selling, general, and administrative expenses 17,086 17,086 Depreciation and amortization from SG&A 1,557 1,557 Total selling, general, and administrative expenses $ 18,643 $ 18,643 Other (income) - net (329) (329) Operating income 33,053 Interest expense – net 885 885 Income before income taxes $ 32,168 Third Quarter Ended, September 11, 2021 (thousands) Environmental Oil Business Corporate and Consolidated Revenues Service revenues $ 56,887 $ 2,850 $ — $ 59,737 Product revenues 9,727 47,986 — 57,713 Rental income 5,725 — — 5,725 Total revenues $ 72,339 $ 50,836 $ — $ 123,175 Operating expenses Operating costs 52,598 26,888 — 79,486 Operating depreciation and amortization 2,482 2,175 — 4,657 Profit before corporate selling, general, and administrative expenses $ 17,259 $ 21,773 $ — $ 39,032 Selling, general, and administrative expenses 13,294 13,294 Depreciation and amortization from SG&A 1,110 1,110 Total selling, general, and administrative expenses $ 14,404 $ 14,404 Other (income) - net (230) (230) Operating income 24,858 Interest expense – net 206 206 Income before income taxes $ 24,652 Segment results for the first three quarters ended September 10, 2022, and September 11, 2021 were as follows: First Three Quarters Ended, September 10, 2022 (thousands) Environmental Oil Business Corporate and Consolidated Revenues Service revenues $ 226,809 $ 7,766 $ — $ 234,575 Product revenues 37,726 177,222 — 214,948 Rental income 18,673 37 — 18,710 Total revenues $ 283,208 $ 185,025 $ — $ 468,233 Operating expenses Operating costs 214,091 106,593 — 320,684 Operating depreciation and amortization 10,448 6,547 — 16,995 Profit before corporate selling, general, and administrative expenses $ 58,669 $ 71,885 $ — $ 130,554 Selling, general, and administrative expenses 45,846 45,846 Depreciation and amortization from SG&A 4,551 4,551 Total selling, general, and administrative expenses $ 50,397 $ 50,397 Other expense - net 462 462 Operating income 79,695 Interest expense – net 1,358 1,358 Income before income taxes $ 78,337 First Three Quarters Ended, September 11, 2021 (thousands) Environmental Oil Business Corporate and Consolidated Revenues Service revenues $ 166,593 $ 10,876 $ 177,469 Product revenues 31,100 120,429 — 151,529 Rental income 16,818 18 16,836 Total revenues $ 214,511 $ 131,323 $ — $ 345,834 Operating expenses Operating costs 155,596 78,988 — 234,584 Operating depreciation and amortization 6,490 5,233 11,723 Profit before corporate selling, general, and administrative expenses $ 52,425 $ 47,102 $ — $ 99,527 Selling, general, and administrative expenses 38,522 38,522 Depreciation and amortization from SG&A 3,445 3,445 Total selling, general, and administrative expenses $ 41,967 $ 41,967 Other (income) - net (669) (669) Operating income 58,229 Interest expense – net 707 707 Income before income taxes $ 57,522 Total assets by segment as of September 10, 2022 and January 1, 2022 were as follows: (thousands) September 10, 2022 January 1, 2022 Total Assets: Environmental Services $ 499,864 $ 281,333 Oil Business 197,922 171,188 Unallocated Corporate Assets 61,229 74,343 Total $ 759,015 $ 526,864

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	8 Months Ended
COMMITMENTS AND CONTINGENCIES	Sep. 10, 2022
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES LEASES Lessee The Company leases buildings and property, railcars, machinery and equipment, and various types of vehicles and trailers for use in our operations. Each arrangement is evaluated individually to determine if the arrangement is or contains a lease at inception. The Company has lease agreements with lease and non-lease components and we have elected to not separate lease and non-lease components for all classes of underlying assets. In addition, our lease agreements do not contain any material residual guarantees or restrictive covenants. Leases may include variable lease payments for common area maintenance, real estate taxes, and truck lease mileage. Variable lease payments are not included in the initial measurement of the right-of-use assets or lease liabilities, and are recorded as lease expense in the period incurred. Options to extend or terminate a lease are included in the lease term when it is reasonably certain that we will exercise that option. We have elected not to record leases with an initial term of 12 months or less on the balance sheet and instead recognize those lease payments on a straight-line basis over the lease term. Leases with initial terms in excess of 12 months are recorded as either operating or financing leases in our Consolidated Balance Sheet. Right-of-use assets represent the Company's right to use an underlying asset during the lease term and lease liabilities represent the Company's obligation to make lease payments arising from the lease. Our leased right-of-use assets are measured at the initial measurement of the lease liability, adjusted for any lease payments made prior to the lease commencement date, less any lease incentives received and other initial direct costs incurred. Our lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As most of our leases do not provide an implicit rate, we use an incremental borrowing rate based on the information available at commencement date, including lease term, in determining the present value of future payments. Our leases have remaining terms ranging from less than one month to approximately 12 years and may include options to extend or terminate the lease when it is reasonably certain that the option will be exercised. Lease expense is recognized on a straight-line basis over the lease term. Our finance leases include a fleet of mobile equipment. Lessor The Company is a lessor of portions of buildings and property, railcars, and equipment such as embedded leases of parts cleaning machines. Each of the Company’s leases is classified as an operating lease, and the vast majority are short-term leases. Variable lease payments include real and personal property taxes, which are based on the lessee’s pro rata portion of such amounts, and excess mileage charges which are computed as the actual miles traveled in a calendar year minus the maximum average mileage allowance as specified per the contract. Options to extend the lease beyond the original terms range from day-to-day renewals to increments of five-year extensions. Options to terminate the lease range from immediate termination upon return of the asset to various written notification periods following a minimum lease term. Options for a lessee to purchase the underlying asset are not contractually specified but may be negotiated on a case-by-case basis. Significant judgments made in determining whether a contract contains a lease include assessments as to whether or not the contract conveys the right to direct the use of an identified asset. Significant judgments made in allocating consideration between lease and non-lease components include techniques applied in estimating the relative stand-alone selling prices of the lease and non-lease components of the contract in cases where a stand-alone selling price is not directly observable. No leased assets are covered by residual value guarantees. The Company manages the risk associated with the residual value of leased assets through such means as performing periodic maintenance and upkeep activities and the inclusion of contractual terms that hold the lessee responsible for damage incurred to leased assets. The Company has made an accounting policy election to exclude from the consideration in the contract, and from variable payments not included in the consideration in the contract, all taxes assessed by a governmental authority that are both imposed on and concurrent with a specific lease revenue-producing transaction and collected by the lessor from a lessee. The Company recognizes rental income on a straight-line basis for that portion of the consideration allocated to the embedded lease component of certain of our parts cleaning contracts. We also recognize rental income on certain subleases of railcars and portions of buildings and property. Rental income was as follows: Third Quarter Ended, September 10, 2022 September 11, 2021 (thousands) Environmental Services Oil Business Total Environmental Services Oil Business Total Parts Cleaning $ 6,421 $ — $ 6,421 $ 5,701 $ — $ 5,701 Property 24 14 38 24 — 24 Total rental income $ 6,445 $ 14 $ 6,459 $ 5,725 $ — $ 5,725 First Three Quarters Ended, September 10, 2022 September 11, 2021 (thousands) Environmental Services Oil Business Total Environmental Services Oil Business Total Parts Cleaning $ 18,593 $ — $ 18,593 $ 16,744 $ — $ 16,744 Property 80 37 117 74 18 92 Total rental income $ 18,673 $ 37 $ 18,710 $ 16,818 $ 18 $ 16,836 Purchase Obligations The Company may enter into purchase obligations with certain vendors. They represent expected payments to third party service providers and other commitments entered into during the normal course of our business. These purchase obligations are generally cancellable with or without notice, without penalty, although certain vendor agreements provide for cancellation fees or penalties depending on the terms of the contract. The Company has purchase obligations in the form of open purchase orders of $21.1 million as of September 10, 2022, and $16.5 million as of January 1, 2022, primarily for used oil, solvent, machine purchases, disposal and transportation expenses, and capital expenditures. Litigation and Claims

INCOME TAXES

INCOME TAXES	8 Months Ended
INCOME TAXES	Sep. 10, 2022
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES Tax expense for the third fiscal quarter of 2022 was $9.0 million. The Company's effective tax rate for the third quarter of fiscal 2022 was 27.8% compared to 25.1% in the third quarter of fiscal 2021. Tax expense for the first three quarters of 2022 was $21.2 million. The Company’s effective tax rate for the first three quarters of fiscal 2022 was 27.0% compared to 25.6% in the first three quarters of 2021. The rate increases are principally attributable to the increased impact of certain nondeductible, nonrecurring expenses. The Company establishes reserves when it is more likely than not that the Company will not realize the full tax benefit of a position. The Company had a reserve of $2.2 million for uncertain tax positions as of September 10, 2022. The gross unrecognized tax benefits would, if recognized, decrease the Company's effective tax rate. As of September 10, 2022, the Company believes it is more likely than not that a benefit from foreign net operating loss carryforwards will not be realized. The Company provided a valuation allowance against those foreign net operating loss carryforwards of $0.6 million. The Inflation Reduction Act of 2022 (the “Act”) was signed into U.S. law on August 16, 2022. The Act includes various tax provisions, including an excise tax on stock repurchases, expanded tax credits for clean energy incentives, and a corporate

SHARE-BASED COMPENSATION

SHARE-BASED COMPENSATION	8 Months Ended
SHARE-BASED COMPENSATION	Sep. 10, 2022
Share-Based Payment Arrangement [Abstract]
SHARE-BASED COMPENSATION	SHARE-BASED COMPENSATION Restricted Stock Compensation/Awards Annually, the Company grants restricted shares to its Board of Directors. The shares become fully vested one year from their grant date. The fair value of each restricted stock grant is based on the closing price of the Company's common stock on the date of grant. The Company amortizes the expense over the service period, which is the fiscal year in which the award is granted. In addition, the Company may grant restricted shares to certain members of management based on their services and contingent upon continued service with the Company. The restricted shares vest over a period of approximately three years from the grant date. The fair value of each restricted stock grant is based on the closing price of the Company's common stock on the date of grant. The following table shows a summary of restricted share grants and expense resulting from the awards: Compensation Expense (thousands, except share amounts) First Three Quarters Ended, Unrecognized Expense as of, Recipient of Grant Grant Date Restricted Shares September 10, 2022 September 11, 2021 September 10, 2022 September 11, 2021 Special Incentive Grant April, 2018 350,000 380 1,123 — 798 Members of Management May, 2019 23,560 — 36 — — Members of Management February, 2020 41,138 60 75 27 114 Chief Executive Officer February, 2021 500,000 1,520 1,619 2,360 4,698 Members of Management February, 2021 35,898 155 114 293 517 Board of Directors April, 2021 11,487 — 227 — 105 Members of Management February, 2022 75,355 362 — 1,185 — Board of Directors April, 2022 18,064 350 — 165 — On January 8, 2021, the Company and Mr. Brian Recatto entered into an amended Executive Employment Agreement (the “Amended Agreement”) which was effective on February 1, 2021. Pursuant to the Amended Agreement, the Company replaced in its entirety section 4.3 of the First Amendment to the Executive Employment Agreement relating to equity compensation that was effective February 1, 2017. As of February 1, 2021, Mr. Recatto received a one-time award of 500,000 shares of restricted stock, subject to the achievement of performance criteria established by the Compensation Committee of the Board of Directors pursuant to the Company's 2019 Incentive Plan. The award date for such Performance-Based Restricted Stock was on February 1, 2021. Such award was granted pursuant to and governed by the terms of the 2019 Incentive Plan and an award agreement in a form provided by the Company. The Performance-Based Restricted Stock one-time award of 500,000 shares received on February 1, 2021, shall vest on January 31, 2025 if Mr. Recatto is employed by the Company on that date, in an amount determined by applying the applicable percentages from the chart below, with the common stock price increases to be determined based on the increase in the price of the Company’s common stock (if any) from the closing price of the common stock as reported by Nasdaq on the amended agreement commencement date ($21.77) and the common stock price on the potential vesting date (determined by using the average closing price of a share of the Company's common stock for the 90-day period ending on the vesting date). If the stock price does not increase by $5.00, then no shares shall vest. During the third quarter of fiscal 2022, the Company recorded approximately $1.1 million of compensation expense related to this award. In the future, the Company expects to recognize compensation expense of approximately $2.8 million over the remaining requisite service period, which ends January 31, 2025. The fair value of this restricted stock award as of the grant date was estimated using a Monte Carlo simulation model. Key assumptions used in the Monte Carlo simulation to estimate the grant date fair value of this award are a risk-free rate of 0.29%, expected dividend yield of zero, and an expected volatility assumption of 53.07%. Vesting Table Increase in Stock Price From the Amended Agreement Commencement Date to the Vesting Date Total Percentage of Restricted Stock Less than $5 per share increase —% $5 per share increase 25% (vest in 125,000 shares) $10 per share increase 50% (vest in 250,000 shares) $15 per share increase 75% (vest in 375,000 shares) $20 or more per share increase 100% (vest in 500,000 shares) Provision for possible accelerated vesting of award If the average closing price of the Company's common stock increases by the marginal levels set forth in the above vesting table for any consecutive 180 day period between February 1, 2021 and January 31, 2025, Mr. Recatto shall become vested in 50% of the corresponding total percentage of restricted shares earned on the last day of the 180 day period. In addition, on each of December 31, 2021, December 31, 2022, and December 31, 2023, to the extent Mr. Recatto remains employed by the Company under the Amended Agreement on such date, Mr. Recatto shall receive a grant of restricted stock as of such date valued at Five Hundred Thousand Dollars ($500,000), with the number of shares of restricted stock constituting such grant determined by applying the average closing price for a share of the Company’s common stock for the 90-day period ending on such date. Such awards of Time-Based Restricted Stock shall be granted pursuant to and governed by the terms of the 2019 Incentive Plan and an award agreement in a form provided by the Company. The Time-Based Restricted Stock shall vest only if Mr. Recatto remains employed by the Company under the Amended Agreement through December 31, 2023; provided, that, upon a Change of Control of the Company (as such term is defined in the Amended Agreement), all shares of the Time-Based Restricted Stock awarded up through the date of closing of the Change in Control shall become vested, and no further award of Time-Based Restricted Stock shall be awarded. During the third quarter of fiscal 2022, the Company recorded approximately $0.3 million of compensation expense related to this award. The following table summarizes the restricted stock activity for the third quarter ended September 10, 2022: Restricted Stock (Nonvested Shares) Number of Shares Weighted Average Grant-Date Fair Value Per Share Nonvested shares outstanding at January 1, 2022 723,983 $ 21.83 Granted 93,419 27.67 Vested (107,772) 23.05 Forfeited (128,297) 22.35 Nonvested shares outstanding at September 10, 2022 581,333 $ 23.28 Employee Stock Purchase Plan

EARNINGS PER SHARE

EARNINGS PER SHARE	8 Months Ended
EARNINGS PER SHARE	Sep. 10, 2022
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE The following table reconciles the number of shares outstanding for the third quarter of fiscal 2022 and 2021, respectively, to the number of weighted average basic shares outstanding and the number of weighted average diluted shares outstanding for the purposes of calculating basic and diluted earnings per share: Third Quarter Ended, First Three Quarters Ended, (thousands, except per share amounts) September 10, 2022 September 11, 2021 September 10, 2022 September 11, 2021 Net income $ 23,201 $ 18,508 $ 57,186 $ 42,825 Weighted average basic shares outstanding 23,592 23,431 23,519 23,403 Dilutive shares for share–based compensation plans 82 139 132 145 Weighted average diluted shares outstanding 23,674 23,570 23,651 23,548 Net income per share: basic $ 0.98 $ 0.79 $ 2.43 $ 1.83 Net income per share: diluted $ 0.98 $ 0.79 $ 2.42 $ 1.82

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	8 Months Ended
FAIR VALUE MEASUREMENTS	Sep. 10, 2022
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS Recurring Fair Value Measurements The following tables summarize assets measured at fair value on a recurring basis (in millions) as of September 10, 2022: Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Fair Value Measurements Equity Securities (1) $— $— $3.0 $3.0 (1) Represents a $3.0 million investment the Company made in its privately held battery recycling partner, HBR Retriev Holdco, LLC ("Retriev"). Retriev is a Limited Liability Company that is controlled by the Heritage Group, an affiliate of the Company.

OTHER (INCOME) EXPENSE - NET

OTHER (INCOME) EXPENSE - NET	8 Months Ended
OTHER (INCOME) EXPENSE - NET	Sep. 10, 2022
Other Income and Expenses [Abstract]
OTHER (INCOME) EXPENSE - NET	OTHER (INCOME) EXPENSE - NETOther (income) expense - net was $(0.3) million of income for the third quarter of fiscal 2022, compared to a net $(0.2) million of income in the third quarter of 2021. Other (income) expense - net was $0.5 million of expense for the first three quarters of fiscal 2022, compared to $(0.7) million of income for the first three quarters of fiscal 2021. The 2022 other expense includes approximately $1.1 million of net loss on disposal of assets.

ORGANIZATION AND NATURE OF OP_2

ORGANIZATION AND NATURE OF OPERATIONS (Policies)	8 Months Ended
ORGANIZATION AND NATURE OF OPERATIONS (Policies)	Sep. 10, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Fiscal Period	The Company’s fiscal year ends on the Saturday closest to December 31. The most recent fiscal year ended on January 1, 2022. Each of the Company's first three fiscal quarters consists of twelve weeks while the last fiscal quarter consists of sixteen or seventeen weeks.

BUSINESS COMBINATIONS (Tables)

BUSINESS COMBINATIONS (Tables)	8 Months Ended
BUSINESS COMBINATIONS (Tables)	Sep. 10, 2022
Business Combination and Asset Acquisition [Abstract]
Schedule Estimated Fair Values of Assets Acquired, Net of Cash Acquired	The following table summarizes the estimated fair values of the assets acquired, net of cash acquired, related to each acquisition as of September 10, 2022: As of September 10, 2022 (thousands) Source Environmental, Inc. (1) Raider Environmental Services of Florida, Inc. (1) Cole's Environmental (1) Patriot Environmental Services, Inc. (2) Accounts receivable $ 1,064 $ 488 $ — $ 26,305 Inventory — — 73 — Other current assets 6 162 — 1,947 Property, plant, & equipment 174 4,404 2,455 57,932 Intangible assets 13,692 6,056 9,620 — Goodwill 6,174 2,835 5,144 83,431 Accounts payable and accruals (677) (218) — (11,761) Total purchase price, net of cash acquired $ 20,433 $ 13,727 $ 17,292 $ 157,854 Less: contingent consideration — — 4,464 — Less: placed in escrow — — 100 2,780 Net cash paid $ 20,433 $ 13,727 $ 12,728 $ 155,074 (1) The above purchase price allocations are final as of September 10, 2022.
Schedule of Unaudited Pro Forma Financial Information	The pro forma financial information in the table below presents the combined results of the Company as if the Patriot acquisition had occurred on January 2, 2021. The pro forma information is shown for illustrative purposes only and is not necessarily indicative of future results of operations of the Company or results of operations of the Company that would have actually occurred had the transactions been in effect for the periods presented. Third Quarter Ended, (thousands, except per share data) September 10, 2022 September 11, 2021 Total revenues $ 179,832 $ 148,005 Net income $ 21,796 $ 20,744 Net income per share: basic $ 0.92 $ 0.89 Net income per share: diluted $ 0.92 $ 0.88 First Three Quarters Ended, (thousands, except per share data) September 10, 2022 September 11, 2021 Total revenues $ 541,008 $ 418,878 Net income $ 56,409 $ 44,734 Net income per share: basic $ 2.40 $ 1.91 Net income per share: diluted $ 2.39 $ 1.90

REVENUE (Tables)

REVENUE (Tables)	8 Months Ended
REVENUE (Tables)	Sep. 10, 2022
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue by Major Lines	The following table disaggregates our revenue by major lines: Third Quarter Ended, September 10, 2022 September 11, 2021 Total Net Sales by Major Lines of Business (thousands) Environmental Services Oil Business Total Environmental Services Oil Business Total Parts Cleaning, Containerized Waste, & related products/services $ 51,731 $ — $ 51,731 $ 40,232 $ — $ 40,232 Wastewater Vacuum Services 21,169 — 21,169 15,131 — 15,131 Field Services 19,822 — 19,822 5,063 — 5,063 Antifreeze Business 7,036 — 7,036 5,730 — 5,730 Environmental Services - Other 475 — 475 458 — 458 Re-Refinery Product Sales — 62,618 62,618 — 45,275 45,275 Oil Collection Services & RFO — 1,712 1,712 — 4,425 4,425 Oil Filter Business — 1,197 1,197 — 1,136 1,136 Revenues from Contracts with Customers 100,233 65,527 165,760 66,614 50,836 117,450 Rental income 6,445 14 6,459 5,725 — 5,725 Total Revenues $ 106,678 $ 65,541 $ 172,219 $ 72,339 $ 50,836 $ 123,175 First Three Quarters Ended, September 10, 2022 September 11, 2021 Total Net Sales by Major Lines of Business (thousands) Environmental Services Oil Business Total Environmental Services Oil Business Total Parts cleaning, containerized waste, & related products/services $ 148,908 $ — $ 148,908 $ 119,805 $ — $ 119,805 Wastewater Vacuum Services 59,710 — 59,710 43,671 — 43,671 Field Services 32,651 — 32,651 13,908 — 13,908 Antifreeze Business 21,810 — 21,810 19,003 — 19,003 Environmental Services - Other 1,456 — 1,456 1,306 — 1,306 Re-refinery Product Sales — 165,955 165,955 — 114,158 114,158 Oil Collection Services & RFO — 15,278 15,278 — 13,594 13,594 Oil Filter Business — 3,755 3,755 — 3,553 3,553 Revenues from Contracts with Customers 264,535 184,988 449,523 197,693 131,305 328,998 Rental income 18,673 37 18,710 16,818 18 16,836 Total Revenues $ 283,208 $ 185,025 $ 468,233 $ 214,511 $ 131,323 $ 345,834
Contract Assets and Contract Liabilities from Contracts with Customers	The following table provides information about contract assets and contract liabilities from contracts with customers: (thousands) September 10, 2022 January 1, 2022 Contract assets $ 84 $ 268 Contract liabilities 2,721 2,362 Contract liabilities - net $ 2,637 $ 2,094

ACCOUNTS RECEIVABLE (Tables)

ACCOUNTS RECEIVABLE (Tables)	8 Months Ended
ACCOUNTS RECEIVABLE (Tables)	Sep. 10, 2022
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Schedule of Accounts Receivable and Allowance for Uncollectible Accounts	Accounts receivable for the third quarter ended September 10, 2022, and the fiscal year ended January 1, 2022 consisted of the following: (thousands) September 10, January 1, Trade $ 115,278 $ 59,132 Less: allowance for uncollectible accounts 5,169 2,928 Trade - net 110,109 56,204 Related parties 7,817 5,410 Other 790 899 Total accounts receivable - net $ 118,716 $ 62,513 The following table provides the changes in the Company’s allowance for uncollectible accounts for the first three quarters ended September 10, 2022, and the fiscal year ended January 1, 2022: (thousands) September 10, January 1, Balance at beginning of period $ 2,928 $ 2,502 Provision for uncollectible accounts 1,115 1,930 Additions through acquisitions 1,586 — Accounts written off, net of recoveries (460) (1,504) Balance at end of period $ 5,169 $ 2,928

INVENTORY (Tables)

INVENTORY (Tables)	8 Months Ended
INVENTORY (Tables)	Sep. 10, 2022
Inventory Disclosure [Abstract]
Schedule of Inventory	The carrying value of inventory consisted of the following: (thousands) September 10, January 1, Solvents and solutions $ 11,600 $ 7,704 Used oil and processed oil 17,109 9,361 Machines 5,415 4,995 Drums and supplies 6,322 5,731 Other 2,464 2,246 Total inventory 42,910 30,037 Less: machine refurbishing reserve 440 501 Total inventory - net $ 42,470 $ 29,536

GOODWILL AND OTHER INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)	8 Months Ended
GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)	Sep. 10, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table shows changes to our goodwill balances by segment from January 1, 2022 to September 10, 2022: (thousands) Environmental Services Total Goodwill at January 1, 2022 Gross carrying amount $ 49,695 $ 49,695 Accumulated impairment loss — — Net book value at January 1, 2022 $ 49,695 $ 49,695 Acquisitions 83,431 83,431 Goodwill at September 10, 2022 Gross carrying amount 133,126 $ 133,126 Accumulated impairment loss — — Net book value at September 10, 2022 $ 133,126 $ 133,126
Schedule of Finite-Lived Intangible Assets	The following is a summary of software and other intangible assets: September 10, 2022 January 1, 2022 (thousands) Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer & supplier relationships $ 47,168 $ 23,888 $ 23,280 $ 47,167 $ 20,725 $ 26,442 Permits 13,590 1,425 12,165 13,590 879 12,711 Software 13,411 7,057 6,354 11,721 6,399 5,322 Non-compete agreements 4,427 3,580 847 4,048 3,340 708 Patents, formulae, and licenses 1,769 951 818 1,769 906 863 Other* 606 718 (112) 996 1,093 (97) Total software and intangible assets $ 80,971 $ 37,619 $ 43,352 $ 79,291 $ 33,342 $ 45,949 *Other intangibles include an above market lease acquired in September 2021 that had a fair value of ($0.7) million upon acquisition and is being accreted over the remaining useful life of the lease. The weighted average useful lives of software and other intangibles are as follows: Weighted Average Useful Life (years) Permits 16 Patents, formulae, & licenses 15 Customer and supplier relationships 12 Software 9 Non-compete agreements 5 Other 7
Finite-lived Intangible Assets Amortization Expense	The estimated amortization expense for the remainder of fiscal 2022 and each of the five succeeding fiscal years is as follows: (millions) Fiscal Year Amortization Expense 2022 $1.9 2023 5.7 2024 4.1 2025 3.1 2026 2.5 2027 2.5

ACCOUNTS PAYABLE (Tables)

ACCOUNTS PAYABLE (Tables)	8 Months Ended
ACCOUNTS PAYABLE (Tables)	Sep. 10, 2022
Payables and Accruals [Abstract]
Schedule of Accounts Payable	Accounts payable consisted of the following: (thousands) September 10, January 1, Accounts payable $ 56,065 $ 35,613 Accounts payable - related parties 688 566 Total accounts payable $ 56,753 $ 36,179

DEBT AND FINANCING ARRANGEMEN_2

DEBT AND FINANCING ARRANGEMENTS (Tables)	8 Months Ended
DEBT AND FINANCING ARRANGEMENTS (Tables)	Sep. 10, 2022
Debt Disclosure [Abstract]
Schedule of Debt	Debt at September 10, 2022 and January 1, 2022 consisted of the following: (thousands) September 10, 2022 January 1, 2022 Principal amount (revolving loan) $ 100,000 $ — Less: unamortized debt issuance costs 676 — Revolving loan, net of debt issuance costs $ 99,324 $ —

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	8 Months Ended
SEGMENT INFORMATION (Tables)	Sep. 10, 2022
Segment Reporting [Abstract]
Schedule of Reconciliation of Segment Results to Consolidated	Segment results for the third quarters ended September 10, 2022 and September 11, 2021 were as follows: Third Quarter Ended, September 10, 2022 (thousands) Environmental Oil Business Corporate and Consolidated Revenues Service revenues $ 87,530 $ 2,554 $ — $ 90,084 Product revenues 12,703 62,973 — 75,676 Rental income 6,445 14 — 6,459 Total revenues $ 106,678 $ 65,541 $ — $ 172,219 Operating expenses Operating costs 77,559 36,588 — 114,147 Operating depreciation and amortization 4,367 2,338 — 6,705 Profit before corporate selling, general, and administrative expenses $ 24,752 $ 26,615 $ — $ 51,367 Selling, general, and administrative expenses 17,086 17,086 Depreciation and amortization from SG&A 1,557 1,557 Total selling, general, and administrative expenses $ 18,643 $ 18,643 Other (income) - net (329) (329) Operating income 33,053 Interest expense – net 885 885 Income before income taxes $ 32,168 Third Quarter Ended, September 11, 2021 (thousands) Environmental Oil Business Corporate and Consolidated Revenues Service revenues $ 56,887 $ 2,850 $ — $ 59,737 Product revenues 9,727 47,986 — 57,713 Rental income 5,725 — — 5,725 Total revenues $ 72,339 $ 50,836 $ — $ 123,175 Operating expenses Operating costs 52,598 26,888 — 79,486 Operating depreciation and amortization 2,482 2,175 — 4,657 Profit before corporate selling, general, and administrative expenses $ 17,259 $ 21,773 $ — $ 39,032 Selling, general, and administrative expenses 13,294 13,294 Depreciation and amortization from SG&A 1,110 1,110 Total selling, general, and administrative expenses $ 14,404 $ 14,404 Other (income) - net (230) (230) Operating income 24,858 Interest expense – net 206 206 Income before income taxes $ 24,652 Segment results for the first three quarters ended September 10, 2022, and September 11, 2021 were as follows: First Three Quarters Ended, September 10, 2022 (thousands) Environmental Oil Business Corporate and Consolidated Revenues Service revenues $ 226,809 $ 7,766 $ — $ 234,575 Product revenues 37,726 177,222 — 214,948 Rental income 18,673 37 — 18,710 Total revenues $ 283,208 $ 185,025 $ — $ 468,233 Operating expenses Operating costs 214,091 106,593 — 320,684 Operating depreciation and amortization 10,448 6,547 — 16,995 Profit before corporate selling, general, and administrative expenses $ 58,669 $ 71,885 $ — $ 130,554 Selling, general, and administrative expenses 45,846 45,846 Depreciation and amortization from SG&A 4,551 4,551 Total selling, general, and administrative expenses $ 50,397 $ 50,397 Other expense - net 462 462 Operating income 79,695 Interest expense – net 1,358 1,358 Income before income taxes $ 78,337 First Three Quarters Ended, September 11, 2021 (thousands) Environmental Oil Business Corporate and Consolidated Revenues Service revenues $ 166,593 $ 10,876 $ 177,469 Product revenues 31,100 120,429 — 151,529 Rental income 16,818 18 16,836 Total revenues $ 214,511 $ 131,323 $ — $ 345,834 Operating expenses Operating costs 155,596 78,988 — 234,584 Operating depreciation and amortization 6,490 5,233 11,723 Profit before corporate selling, general, and administrative expenses $ 52,425 $ 47,102 $ — $ 99,527 Selling, general, and administrative expenses 38,522 38,522 Depreciation and amortization from SG&A 3,445 3,445 Total selling, general, and administrative expenses $ 41,967 $ 41,967 Other (income) - net (669) (669) Operating income 58,229 Interest expense – net 707 707 Income before income taxes $ 57,522
Schedule of Reconciliation of Assets by Segment to Consolidated	Total assets by segment as of September 10, 2022 and January 1, 2022 were as follows: (thousands) September 10, 2022 January 1, 2022 Total Assets: Environmental Services $ 499,864 $ 281,333 Oil Business 197,922 171,188 Unallocated Corporate Assets 61,229 74,343 Total $ 759,015 $ 526,864

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	8 Months Ended
COMMITMENTS AND CONTINGENCIES (Tables)	Sep. 10, 2022
Commitments and Contingencies Disclosure [Abstract]
Rental Income	Rental income was as follows: Third Quarter Ended, September 10, 2022 September 11, 2021 (thousands) Environmental Services Oil Business Total Environmental Services Oil Business Total Parts Cleaning $ 6,421 $ — $ 6,421 $ 5,701 $ — $ 5,701 Property 24 14 38 24 — 24 Total rental income $ 6,445 $ 14 $ 6,459 $ 5,725 $ — $ 5,725 First Three Quarters Ended, September 10, 2022 September 11, 2021 (thousands) Environmental Services Oil Business Total Environmental Services Oil Business Total Parts Cleaning $ 18,593 $ — $ 18,593 $ 16,744 $ — $ 16,744 Property 80 37 117 74 18 92 Total rental income $ 18,673 $ 37 $ 18,710 $ 16,818 $ 18 $ 16,836

SHARE-BASED COMPENSATION (Table

SHARE-BASED COMPENSATION (Tables)	8 Months Ended
SHARE-BASED COMPENSATION (Tables)	Sep. 10, 2022
Share-Based Payment Arrangement [Abstract]
Schedule of Restricted Stock Unit Activity	The following table shows a summary of restricted share grants and expense resulting from the awards: Compensation Expense (thousands, except share amounts) First Three Quarters Ended, Unrecognized Expense as of, Recipient of Grant Grant Date Restricted Shares September 10, 2022 September 11, 2021 September 10, 2022 September 11, 2021 Special Incentive Grant April, 2018 350,000 380 1,123 — 798 Members of Management May, 2019 23,560 — 36 — — Members of Management February, 2020 41,138 60 75 27 114 Chief Executive Officer February, 2021 500,000 1,520 1,619 2,360 4,698 Members of Management February, 2021 35,898 155 114 293 517 Board of Directors April, 2021 11,487 — 227 — 105 Members of Management February, 2022 75,355 362 — 1,185 — Board of Directors April, 2022 18,064 350 — 165 — The following table summarizes the restricted stock activity for the third quarter ended September 10, 2022: Restricted Stock (Nonvested Shares) Number of Shares Weighted Average Grant-Date Fair Value Per Share Nonvested shares outstanding at January 1, 2022 723,983 $ 21.83 Granted 93,419 27.67 Vested (107,772) 23.05 Forfeited (128,297) 22.35 Nonvested shares outstanding at September 10, 2022 581,333 $ 23.28
Schedule of Restricted Stock Vesting Percentages	Vesting Table Increase in Stock Price From the Amended Agreement Commencement Date to the Vesting Date Total Percentage of Restricted Stock Less than $5 per share increase —% $5 per share increase 25% (vest in 125,000 shares) $10 per share increase 50% (vest in 250,000 shares) $15 per share increase 75% (vest in 375,000 shares) $20 or more per share increase 100% (vest in 500,000 shares)

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	8 Months Ended
EARNINGS PER SHARE (Tables)	Sep. 10, 2022
Earnings Per Share [Abstract]
Schedule of Weighted Average Basic and Diluted Shares Outstanding	The following table reconciles the number of shares outstanding for the third quarter of fiscal 2022 and 2021, respectively, to the number of weighted average basic shares outstanding and the number of weighted average diluted shares outstanding for the purposes of calculating basic and diluted earnings per share: Third Quarter Ended, First Three Quarters Ended, (thousands, except per share amounts) September 10, 2022 September 11, 2021 September 10, 2022 September 11, 2021 Net income $ 23,201 $ 18,508 $ 57,186 $ 42,825 Weighted average basic shares outstanding 23,592 23,431 23,519 23,403 Dilutive shares for share–based compensation plans 82 139 132 145 Weighted average diluted shares outstanding 23,674 23,570 23,651 23,548 Net income per share: basic $ 0.98 $ 0.79 $ 2.43 $ 1.83 Net income per share: diluted $ 0.98 $ 0.79 $ 2.42 $ 1.82

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	8 Months Ended
FAIR VALUE MEASUREMENTS (Tables)	Sep. 10, 2022
Fair Value Disclosures [Abstract]
Schedule of Assets Measured on Recurring Basis	The following tables summarize assets measured at fair value on a recurring basis (in millions) as of September 10, 2022: Quoted prices in active markets Significant other observable inputs Significant unobservable inputs Fair Value Measurements Equity Securities (1) $— $— $3.0 $3.0 (1) Represents a $3.0 million investment the Company made in its privately held battery recycling partner, HBR Retriev Holdco, LLC ("Retriev"). Retriev is a Limited Liability Company that is controlled by the Heritage Group, an affiliate of the Company.

ORGANIZATION AND NATURE OF OP_3

ORGANIZATION AND NATURE OF OPERATIONS (Details)	8 Months Ended
ORGANIZATION AND NATURE OF OPERATIONS (Details)	Sep. 10, 2022 segment site
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Non-hazardous waste processing facilities	10
Antifreeze recycling facilities	5
Number of reportable segments \| segment	2

BUSINESS COMBINATIONS - Narrati

BUSINESS COMBINATIONS - Narrative (Details) - USD ($) $ in Millions					8 Months Ended
	Aug. 03, 2022	Sep. 27, 2021	Sep. 13, 2021	Aug. 24, 2021	Sep. 10, 2022
Patriot
Business Acquisition [Line Items]
Aggregate cash consideration	$ 157.9
Transaction costs	$ 0.9				$ 0.9
Business combination, integration related costs					3.6
Increase to property, plant, & equipment					$ 31.8
Property, plant and equipment, useful life					7 years
Source Environmental
Business Acquisition [Line Items]
Aggregate cash consideration		$ 20.4
Raider Environmental
Business Acquisition [Line Items]
Aggregate cash consideration			$ 13.7
Cole's Environmental
Business Acquisition [Line Items]
Aggregate cash consideration				$ 17.3

BUSINESS COMBINATIONS - Estimat

BUSINESS COMBINATIONS - Estimated Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	8 Months Ended
	Sep. 10, 2022	Jan. 01, 2022
Business Acquisition [Line Items]
Goodwill	$ 133,126	$ 49,695
Source Environmental, Inc.
Business Acquisition [Line Items]
Accounts receivable	1,064
Inventory	0
Other current assets	6
Property, plant, & equipment	174
Intangible assets	13,692
Goodwill	6,174
Accounts payable and accruals	(677)
Total purchase price, net of cash acquired	20,433
Less: contingent consideration	0
Less: placed in escrow	0
Net cash paid	20,433
Raider Environmental Services of Florida, Inc.
Business Acquisition [Line Items]
Accounts receivable	488
Inventory	0
Other current assets	162
Property, plant, & equipment	4,404
Intangible assets	6,056
Goodwill	2,835
Accounts payable and accruals	(218)
Total purchase price, net of cash acquired	13,727
Less: contingent consideration	0
Less: placed in escrow	0
Net cash paid	13,727
Cole's Environmental
Business Acquisition [Line Items]
Accounts receivable	0
Inventory	73
Other current assets	0
Property, plant, & equipment	2,455
Intangible assets	9,620
Goodwill	5,144
Accounts payable and accruals	0
Total purchase price, net of cash acquired	17,292
Less: contingent consideration	4,464
Less: placed in escrow	100
Net cash paid	12,728
Patriot Environmental Services, Inc.
Business Acquisition [Line Items]
Accounts receivable	26,305
Inventory	0
Other current assets	1,947
Property, plant, & equipment	57,932
Intangible assets	0
Goodwill	83,431
Accounts payable and accruals	(11,761)
Total purchase price, net of cash acquired	157,854
Less: contingent consideration	0
Less: placed in escrow	2,780
Net cash paid	$ 155,074

BUSINESS COMBINATIONS - Unaudit

BUSINESS COMBINATIONS - Unaudited Pro Forma Financial Information (Details) - Patriot - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		8 Months Ended
	Sep. 10, 2022	Sep. 11, 2021	Sep. 10, 2022	Sep. 11, 2021
Business Acquisition [Line Items]
Total revenues	$ 179,832	$ 148,005	$ 541,008	$ 418,878
Net income	$ 21,796	$ 20,744	$ 56,409	$ 44,734
Net income per share basic (in dollars per share)	$ 0.92	$ 0.89	$ 2.40	$ 1.91
Net income per share diluted (in dollars per share)	$ 0.92	$ 0.88	$ 2.39	$ 1.90

REVENUE - Schedule of Disaggreg

REVENUE - Schedule of Disaggregation of Revenue by Major Lines (Details) - USD ($) $ in Thousands	3 Months Ended		8 Months Ended
	Sep. 10, 2022	Sep. 11, 2021	Sep. 10, 2022	Sep. 11, 2021
Revenue from Contract with Customer [Abstract]
Performance obligation timing			We do not have any material significant payment terms as payment is generally due within 30 days after the performance obligation has been satisfactorily completed. The Company has elected the practical expedient to recognize the incremental costs of obtaining a contract as an expense when incurred if the amortization period of the asset that we otherwise would have recognized is one year or less. In applying the guidance in Topic 606, there were no judgments or estimates made that the Company deems significant.
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	$ 165,760	$ 117,450	$ 449,523	$ 328,998
Rental income	6,459	5,725	18,710	16,836
Total revenues	172,219	123,175	468,233	345,834
Parts Cleaning, Containerized Waste, & related products/services
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	51,731	40,232	148,908	119,805
Wastewater Vacuum Services
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	21,169	15,131	59,710	43,671
Field Services
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	19,822	5,063	32,651	13,908
Antifreeze Business
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	7,036	5,730	21,810	19,003
Environmental Services - Other
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	475	458	1,456	1,306
Re-Refinery Product Sales
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	62,618	45,275	165,955	114,158
Oil Collection Services & RFO
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	1,712	4,425	15,278	13,594
Oil Filter Business
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	1,197	1,136	3,755	3,553
Environmental Services
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	100,233	66,614	264,535	197,693
Rental income	6,445	5,725	18,673	16,818
Total revenues	106,678	72,339	283,208	214,511
Environmental Services \| Parts Cleaning, Containerized Waste, & related products/services
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	51,731	40,232	148,908	119,805
Environmental Services \| Wastewater Vacuum Services
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	21,169	15,131	59,710	43,671
Environmental Services \| Field Services
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	19,822	5,063	32,651	13,908
Environmental Services \| Antifreeze Business
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	7,036	5,730	21,810	19,003
Environmental Services \| Environmental Services - Other
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	475	458	1,456	1,306
Environmental Services \| Re-Refinery Product Sales
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	0	0	0	0
Environmental Services \| Oil Collection Services & RFO
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	0	0	0	0
Environmental Services \| Oil Filter Business
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	0	0	0	0
Oil Business
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	65,527	50,836	184,988	131,305
Rental income	14	0	37	18
Total revenues	65,541	50,836	185,025	131,323
Oil Business \| Parts Cleaning, Containerized Waste, & related products/services
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	0	0	0	0
Oil Business \| Wastewater Vacuum Services
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	0	0	0	0
Oil Business \| Field Services
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	0	0	0	0
Oil Business \| Antifreeze Business
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	0	0	0	0
Oil Business \| Environmental Services - Other
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	0	0	0	0
Oil Business \| Re-Refinery Product Sales
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	62,618	45,275	165,955	114,158
Oil Business \| Oil Collection Services & RFO
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	1,712	4,425	15,278	13,594
Oil Business \| Oil Filter Business
Disaggregation of Revenue [Line Items]
Revenues from Contracts with Customers	$ 1,197	$ 1,136	$ 3,755	$ 3,553

REVENUE - Contract Assets and C

REVENUE - Contract Assets and Contract Liabilities from Contracts with Customers (Details) - USD ($) $ in Thousands	Sep. 10, 2022	Jan. 01, 2022
Revenue from Contract with Customer [Abstract]
Contract assets	$ 84	$ 268
Contract liabilities	2,721	2,362
Contract liabilities - net	$ 2,637	$ 2,094

REVENUE - Narrative (Details)

REVENUE - Narrative (Details) - USD ($)	3 Months Ended	8 Months Ended
REVENUE - Narrative (Details) - USD ($)	Sep. 10, 2022	Sep. 10, 2022
Revenue from Contract with Customer [Abstract]
Revenue recognized	$ 0	$ 2,400,000

ACCOUNTS RECEIVABLE - Summary o

ACCOUNTS RECEIVABLE - Summary of Accounts Receivable (Details) - USD ($) $ in Thousands	Sep. 10, 2022	Jan. 01, 2022	Jan. 02, 2021
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Trade	$ 115,278	$ 59,132
Less: allowance for uncollectible accounts	5,169	2,928	$ 2,502
Trade - net	110,109	56,204
Related parties	7,817	5,410
Other	790	899
Total accounts receivable - net	$ 118,716	$ 62,513

ACCOUNTS RECEIVABLE - Rollforwa

ACCOUNTS RECEIVABLE - Rollforward of Allowance (Details) - USD ($) $ in Thousands	8 Months Ended		12 Months Ended
	Sep. 10, 2022	Sep. 11, 2021	Jan. 01, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 2,928	$ 2,502	$ 2,502
Provision for uncollectible accounts	1,115	$ 1,069	1,930
Additions through acquisitions	1,586		0
Accounts written off, net of recoveries	(460)		(1,504)
Balance at end of period	$ 5,169		$ 2,928

INVENTORY - Carrying Value of I

INVENTORY - Carrying Value of Inventory (Details) - USD ($)	3 Months Ended
INVENTORY - Carrying Value of Inventory (Details) - USD ($)	Sep. 10, 2022	Sep. 11, 2021	Jan. 01, 2022
Inventory Disclosure [Abstract]
Solvents and solutions	$ 11,600,000		$ 7,704,000
Used oil and processed oil	17,109,000		9,361,000
Machines	5,415,000		4,995,000
Drums and supplies	6,322,000		5,731,000
Other	2,464,000		2,246,000
Total inventory	42,910,000		30,037,000
Less: machine refurbishing reserve	440,000		501,000
Total inventory - net	42,470,000		$ 29,536,000
Inventory impairment charge	$ 0	$ 0

GOODWILL AND OTHER INTANGIBLE_3

GOODWILL AND OTHER INTANGIBLE ASSETS - Goodwill Balances (Details) - USD ($) $ in Thousands	8 Months Ended
	Sep. 10, 2022	Jan. 01, 2022
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 133,126	$ 49,695
Accumulated impairment loss	0	0
Net book value	133,126	49,695
Acquisitions	83,431
Environmental Services
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	133,126	49,695
Accumulated impairment loss	0	0
Net book value	133,126	$ 49,695
Acquisitions	$ 83,431

GOODWILL AND OTHER INTANGIBLE_4

GOODWILL AND OTHER INTANGIBLE ASSETS - Software and Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 10, 2022	Jan. 01, 2022	Sep. 30, 2021
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 80,971	$ 79,291
Accumulated Amortization	37,619	33,342
Net Carrying Amount	43,352	45,949
Customer & supplier relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	47,168	47,167
Accumulated Amortization	23,888	20,725
Net Carrying Amount	23,280	26,442
Permits
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	13,590	13,590
Accumulated Amortization	1,425	879
Net Carrying Amount	12,165	12,711
Software
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	13,411	11,721
Accumulated Amortization	7,057	6,399
Net Carrying Amount	6,354	5,322
Non-compete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,427	4,048
Accumulated Amortization	3,580	3,340
Net Carrying Amount	847	708
Patents, formulae, and licenses
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,769	1,769
Accumulated Amortization	951	906
Net Carrying Amount	818	863
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	606	996	$ (700)
Accumulated Amortization	718	1,093
Net Carrying Amount	$ (112)	$ (97)

GOODWILL AND OTHER INTANGIBLE_5

GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		8 Months Ended
	Sep. 10, 2022	Sep. 11, 2021	Sep. 10, 2022	Sep. 11, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 1.5	$ 1.1	$ 4.3	$ 3.4

GOODWILL AND OTHER INTANGIBLE_6

GOODWILL AND OTHER INTANGIBLE ASSETS - Weighted Average Useful Life (Details)	8 Months Ended
	Sep. 10, 2022
Permits
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life (years)	16 years
Patents, formulae, and licenses
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life (years)	15 years
Customer & supplier relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life (years)	12 years
Software
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life (years)	9 years
Non-compete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life (years)	5 years
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life (years)	7 years

GOODWILL AND OTHER INTANGIBLE_7

GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Expected Amortization Expense (Details) $ in Millions	Sep. 10, 2022 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2022	$ 1.9
2023	5.7
2024	4.1
2025	3.1
2026	2.5
2027	$ 2.5

ACCOUNTS PAYABLE (Details)

ACCOUNTS PAYABLE (Details) - USD ($) $ in Thousands	Sep. 10, 2022	Jan. 01, 2022
Payables and Accruals [Abstract]
Accounts payable	$ 56,065	$ 35,613
Accounts payable - related parties	688	566
Total accounts payable	$ 56,753	$ 36,179

DEBT AND FINANCING ARRANGEMEN_3

DEBT AND FINANCING ARRANGEMENTS - Narrative (Details) - USD ($)			3 Months Ended			8 Months Ended
	Aug. 03, 2022	Mar. 18, 2021	Sep. 10, 2022	Sep. 11, 2021	Mar. 27, 2021	Sep. 10, 2022	Sep. 11, 2021	Jan. 01, 2022
Debt Instrument [Line Items]
Repayment of term loan						$ 0	$ 30,000,000
Weighted average interest rate			2.70%			2.70%
Interest costs incurred			$ 900,000	$ 200,000
Letters of credit outstanding			6,000,000			$ 6,000,000		$ 5,600,000
Current borrowing capacity			$ 44,000,000			$ 44,000,000		$ 94,400,000
Previous term loan \| Term Loan
Debt Instrument [Line Items]
Repayment of term loan					$ 30,000,000
Agreement
Debt Instrument [Line Items]
Debt issuance costs		$ 100,000		$ 800,000			$ 800,000
Minimum interest coverage ratio		3.5
Maximum total leverage ratio		3
Aggregate consideration limit		$ 10,000,000
Leverage ratio at time of acquisition		3.50
Agreement \| Revolving facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 150,000,000	$ 100,000,000
Additional borrowings (up to)	50,000,000	$ 50,000,000
Credit line utilized	$ 115,000,000
Agreement \| Revolving facility \| Federal Funds Rate
Debt Instrument [Line Items]
Basis spread on variable rate		0.50%
Agreement \| Revolving facility \| SOFR
Debt Instrument [Line Items]
Basis spread on variable rate		1%
Agreement \| Revolving facility \| SOFR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		1.50%
Agreement \| Revolving facility \| SOFR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		2.25%
Agreement \| Revolving facility \| Bank of America's Prime Rate \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		1%
Agreement \| Swing Line loan
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 15,000,000

DEBT AND FINANCING ARRANGEMEN_4

DEBT AND FINANCING ARRANGEMENTS - Schedule of Debt (Details) - Agreement - Revolving facility - USD ($) $ in Thousands	Sep. 10, 2022	Jan. 01, 2022
Debt Instrument [Line Items]
Principal amount (revolving loan)	$ 100,000	$ 0
Less: unamortized debt issuance costs	676	0
Revolving loan, net of debt issuance costs	$ 99,324	$ 0

SEGMENT INFORMATION - Operating

SEGMENT INFORMATION - Operating Segment Results (Details) $ in Thousands	3 Months Ended		8 Months Ended
	Sep. 10, 2022 USD ($)	Sep. 11, 2021 USD ($)	Sep. 10, 2022 USD ($) segment	Sep. 11, 2021 USD ($)
Segment Reporting [Abstract]
Number of reportable segments \| segment			2
Revenues
Revenues	$ 165,760	$ 117,450	$ 449,523	$ 328,998
Rental income	6,459	5,725	18,710	16,836
Total revenues	172,219	123,175	468,233	345,834
Operating expenses
Operating costs	114,147	79,486	320,684	234,584
Operating depreciation and amortization	6,705	4,657	16,995	11,723
Profit before corporate selling, general, and administrative expenses	51,367	39,032	130,554	99,527
Selling, general, and administrative expenses	17,086	13,294	45,846	38,522
Depreciation and amortization from SG&A	1,557	1,110	4,551	3,445
Total selling, general, and administrative expenses	18,643	14,404	50,397	41,967
Other (income) expense - net	(329)	(230)	462	(669)
Operating income	33,053	24,858	79,695	58,229
Interest expense – net	885	206	1,358	707
Income before income taxes	32,168	24,652	78,337	57,522
Environmental Services
Revenues
Revenues	100,233	66,614	264,535	197,693
Rental income	6,445	5,725	18,673	16,818
Total revenues	106,678	72,339	283,208	214,511
Oil Business
Revenues
Revenues	65,527	50,836	184,988	131,305
Rental income	14	0	37	18
Total revenues	65,541	50,836	185,025	131,323
Service revenues
Revenues
Revenues	90,084	59,737	234,575	177,469
Product revenues
Revenues
Revenues	75,676	57,713	214,948	151,529
Segments \| Environmental Services
Revenues
Rental income	6,445	5,725	18,673	16,818
Total revenues	106,678	72,339	283,208	214,511
Operating expenses
Operating costs	77,559	52,598	214,091	155,596
Operating depreciation and amortization	4,367	2,482	10,448	6,490
Profit before corporate selling, general, and administrative expenses	24,752	17,259	58,669	52,425
Segments \| Oil Business
Revenues
Rental income		0	37	18
Total revenues	65,541	50,836	185,025	131,323
Operating expenses
Operating costs	36,588	26,888	106,593	78,988
Operating depreciation and amortization	2,338	2,175	6,547	5,233
Profit before corporate selling, general, and administrative expenses	26,615	21,773	71,885	47,102
Segments \| Service revenues \| Environmental Services
Revenues
Revenues	87,530	56,887	226,809	166,593
Segments \| Service revenues \| Oil Business
Revenues
Revenues	2,554	2,850	7,766	10,876
Segments \| Product revenues \| Environmental Services
Revenues
Revenues	12,703	9,727	37,726	31,100
Segments \| Product revenues \| Oil Business
Revenues
Revenues	62,973	47,986	177,222	120,429
Corporate and Eliminations
Revenues
Rental income	0	0	0
Total revenues	0	0	0	0
Operating expenses
Operating costs	0	0	0	0
Operating depreciation and amortization	0	0	0
Profit before corporate selling, general, and administrative expenses	0	0	0	0
Selling, general, and administrative expenses	17,086	13,294	45,846	38,522
Depreciation and amortization from SG&A	1,557	1,110	4,551	3,445
Total selling, general, and administrative expenses	18,643	14,404	50,397	41,967
Other (income) expense - net	(329)	(230)	462	(669)
Interest expense – net	885	206	1,358	707
Corporate and Eliminations \| Service revenues
Revenues
Revenues	0	0	0
Corporate and Eliminations \| Product revenues
Revenues
Revenues	$ 0	$ 0	$ 0	$ 0

SEGMENT INFORMATION - Assets by

SEGMENT INFORMATION - Assets by Segment (Details) - USD ($) $ in Thousands	Sep. 10, 2022	Jan. 01, 2022
Segment Reporting Information [Line Items]
Assets	$ 759,015	$ 526,864
Segments \| Environmental Services
Segment Reporting Information [Line Items]
Assets	499,864	281,333
Segments \| Oil Business
Segment Reporting Information [Line Items]
Assets	197,922	171,188
Unallocated Corporate Assets
Segment Reporting Information [Line Items]
Assets	$ 61,229	$ 74,343

COMMITMENTS AND CONTINGENCIES -

COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Millions	Sep. 10, 2022	Jan. 01, 2022
Lessee, Lease, Description [Line Items]
Lease renewal term	5 years
Remaining amount committed	$ 21.1	$ 16.5
Loss contingency accrual	$ 4.3	$ 3.2
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 month
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	12 years

COMMITMENTS AND CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES - Rental Income (Details) - USD ($) $ in Thousands	3 Months Ended		8 Months Ended
	Sep. 10, 2022	Sep. 11, 2021	Sep. 10, 2022	Sep. 11, 2021
Lessor, Lease, Description [Line Items]
Rental income	$ 6,459	$ 5,725	$ 18,710	$ 16,836
Environmental Services
Lessor, Lease, Description [Line Items]
Rental income	6,445	5,725	18,673	16,818
Oil Business
Lessor, Lease, Description [Line Items]
Rental income	14	0	37	18
Parts Cleaning
Lessor, Lease, Description [Line Items]
Rental income	6,421	5,701	18,593	16,744
Parts Cleaning \| Environmental Services
Lessor, Lease, Description [Line Items]
Rental income	6,421	5,701	18,593	16,744
Parts Cleaning \| Oil Business
Lessor, Lease, Description [Line Items]
Rental income	0	0	0	0
Property
Lessor, Lease, Description [Line Items]
Rental income	38	24	117	92
Property \| Environmental Services
Lessor, Lease, Description [Line Items]
Rental income	24	24	80	74
Property \| Oil Business
Lessor, Lease, Description [Line Items]
Rental income	$ 14	$ 0	$ 37	$ 18

INCOME TAXES (Details)

INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		8 Months Ended
INCOME TAXES (Details) - USD ($) $ in Thousands	Sep. 10, 2022	Sep. 11, 2021	Sep. 10, 2022	Sep. 11, 2021
Valuation Allowance [Line Items]
Provision for income taxes	$ 8,967	$ 6,144	$ 21,151	$ 14,697
Effective income tax rate, percent	27.80%	25.10%	27%	25.60%
Uncertain tax positions
Valuation Allowance [Line Items]
Valuation allowance	$ 2,200		$ 2,200
Foreign Net Operating Loss Carryforwards
Valuation Allowance [Line Items]
Valuation allowance	$ 600		$ 600

SHARE-BASED COMPENSATION - Narr

SHARE-BASED COMPENSATION - Narrative (Details) - USD ($)		3 Months Ended	8 Months Ended
SHARE-BASED COMPENSATION - Narrative (Details) - USD ($)	Feb. 01, 2021	Sep. 10, 2022	Sep. 10, 2022	Sep. 11, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price (in dollars per share)	$ 21.77
Restricted stock \| Board of Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Restricted stock \| Members of Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Restricted stock \| Members of Management \| February, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense			$ 155,000	$ 114,000
Restricted stock \| Mr. Recatto
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	180 days
Grants in period (in shares)	500,000
Vesting threshold (in dollars per share)	$ 5
Shares vested upon achievement of share price threshold (in shares)	0
Compensation expense		$ 1,100,000
Unrecognized compensation expense		2,800,000	$ 2,800,000
Risk-free rate	0.29%
Expected dividend yield	0%
Expected volatility rate	53.07%
Vesting percentage	50%
Restricted stock \| Mr. Recatto \| Less than $5 per share increase
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			0%
Restricted stock \| Mr. Recatto \| $5 per share increase
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			25%
Restricted stock \| Mr. Recatto \| $10 per share increase
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			50%
Restricted stock \| Mr. Recatto \| February, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense			$ 1,520,000	$ 1,619,000
Time Based Restricted Stock \| Mr. Recatto
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			90 days
Compensation expense		$ 300,000
Time Based Restricted Stock \| Mr. Recatto \| Less than $5 per share increase
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant of restricted stock							$ 500,000
Time Based Restricted Stock \| Mr. Recatto \| $5 per share increase \| Estimate
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant of restricted stock						$ 500,000
Time Based Restricted Stock \| Mr. Recatto \| $10 per share increase \| Estimate
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant of restricted stock					$ 500,000

SHARE-BASED COMPENSATION - Rest

SHARE-BASED COMPENSATION - Restricted Stock Compensation/Awards (Details) - USD ($) $ in Thousands	1 Months Ended							3 Months Ended	8 Months Ended
	Apr. 30, 2022	Feb. 28, 2022	Apr. 30, 2021	Feb. 28, 2021	Feb. 29, 2020	May 31, 2019	Apr. 30, 2018	Sep. 10, 2022	Sep. 10, 2022	Sep. 11, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)									93,419
Restricted stock \| Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation Expense								$ 1,100
Restricted stock \| April, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)							350,000
Compensation Expense									$ 380	$ 1,123
Unrecognized Expense								0	0	798
Restricted stock \| May, 2019 \| Members of Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)						23,560
Compensation Expense									0	36
Unrecognized Expense								0	0	0
Restricted stock \| February, 2020 \| Members of Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)					41,138
Compensation Expense									60	75
Unrecognized Expense								27	27	114
Restricted stock \| February, 2021 \| Members of Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)				35,898
Compensation Expense									155	114
Unrecognized Expense								293	293	517
Restricted stock \| February, 2021 \| Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)				500,000
Compensation Expense									1,520	1,619
Unrecognized Expense								2,360	2,360	4,698
Restricted stock \| April, 2021 \| Board of Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)			11,487
Compensation Expense									0	227
Unrecognized Expense								0	0	105
Restricted stock \| February, 2022 \| Members of Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)		75,355
Compensation Expense									362	0
Unrecognized Expense								1,185	1,185	0
Restricted stock \| April, 2022 \| Board of Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted (in shares)	18,064
Compensation Expense									350	0
Unrecognized Expense								$ 165	$ 165	$ 0

SHARE-BASED COMPENSATION - Re_2

SHARE-BASED COMPENSATION - Restricted Stock Vesting Schedule by Percentage (Details) - $ / shares		8 Months Ended
	Feb. 01, 2021	Sep. 10, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested (in shares)		107,772
Mr. Recatto \| Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Percentage of Restricted Stock Shares to Be Vested	50%
Mr. Recatto \| Restricted stock \| Less than $5 per share increase
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in stock price from employment commencement date (in dollars per share)		$ 5
Total Percentage of Restricted Stock Shares to Be Vested		0%
Mr. Recatto \| Restricted stock \| $5 per share increase
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in stock price from employment commencement date (in dollars per share)		$ 5
Total Percentage of Restricted Stock Shares to Be Vested		25%
Vested (in shares)		125,000
Mr. Recatto \| Restricted stock \| $10 per share increase
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in stock price from employment commencement date (in dollars per share)		$ 10
Total Percentage of Restricted Stock Shares to Be Vested		50%
Vested (in shares)		250,000
Mr. Recatto \| Restricted stock \| $15 per share increase
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in stock price from employment commencement date (in dollars per share)		$ 15
Total Percentage of Restricted Stock Shares to Be Vested		75%
Vested (in shares)		375,000
Mr. Recatto \| Restricted stock \| $20 or more per share increase
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in stock price from employment commencement date (in dollars per share)		$ 20
Total Percentage of Restricted Stock Shares to Be Vested		100%
Vested (in shares)		500,000

SHARE-BASED COMPENSATION - Re_3

SHARE-BASED COMPENSATION - Restricted Stock Rollforward (Details)	8 Months Ended
	Sep. 10, 2022 $ / shares shares
Number of Shares
Nonvested shares outstanding at beginning of period (in shares) \| shares	723,983
Granted (in shares) \| shares	93,419
Vested (in shares) \| shares	(107,772)
Forfeited (in shares) \| shares	(128,297)
Nonvested shares outstanding at end of period (in shares) \| shares	581,333
Weighted Average Grant-Date Fair Value Per Share
Nonvested shares outstanding at beginning of period (in dollars per share) \| $ / shares	$ 21.83
Granted (in dollars per share) \| $ / shares	27.67
Vested (in dollars per share) \| $ / shares	23.05
Forfeited (in dollars per share) \| $ / shares	22.35
Nonvested shares outstanding at end of period (in dollars per share) \| $ / shares	$ 23.28

SHARE-BASED COMPENSATION - Empl

SHARE-BASED COMPENSATION - Employee Stock Purchase Plan (Details) - Employee Stock Purchase Plan - Employee stock	3 Months Ended
	Sep. 10, 2022 $ / shares shares
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Shares available employee stock purchase plan (in shares)	46,080
Issuance of common stock – ESPP (in shares)	5,638
Weighted average fair value per share ESPP (in dollars per share) \| $ / shares	$ 27.14

EARNINGS PER SHARE (Details)

EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		8 Months Ended
	Sep. 10, 2022	Sep. 11, 2021	Sep. 10, 2022	Sep. 11, 2021
Earnings Per Share [Abstract]
Net income	$ 23,201	$ 18,508	$ 57,186	$ 42,825
Weighted average basic shares outstanding (in shares)	23,592	23,431	23,519	23,403
Dilutive shares for share–based compensation plans (in shares)	82	139	132	145
Number of weighted average shares outstanding: diluted (in shares)	23,674	23,570	23,651	23,548
Net income per share: basic (in dollars per share)	$ 0.98	$ 0.79	$ 2.43	$ 1.83
Net income per share: diluted (in dollars per share)	$ 0.98	$ 0.79	$ 2.42	$ 1.82

FAIR VALUE MEASUREMENTS - Asset

FAIR VALUE MEASUREMENTS - Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 10, 2022	Jan. 01, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value	$ 3,000	$ 0
Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value	3,000
Recurring \| Quoted prices in active markets (Level 1)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value	0
Recurring \| Significant other observable inputs (Level 2)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value	0
Recurring \| Significant unobservable inputs (Level 3)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value	3,000
Recurring \| Significant unobservable inputs (Level 3) \| Retriev
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments at fair value	$ 3,000

OTHER (INCOME) EXPENSE - NET (D

OTHER (INCOME) EXPENSE - NET (Details) - USD ($) $ in Thousands	3 Months Ended		8 Months Ended
	Sep. 10, 2022	Sep. 11, 2021	Sep. 10, 2022	Sep. 11, 2021
Other Income and Expenses [Abstract]
Other (income) expense - net	$ (329)	$ (230)	$ 462	$ (669)
Net loss on disposal of assets			$ 1,100