NOS4-1 (WLMSQ) 10-K 16 Mar 22 2021 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 07, 2022	Jul. 02, 2021
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	001-16501
Entity Registrant Name	Williams Industrial Services Group Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	73-1541378
Entity Address, Address Line One	200 Ashford Center North
Entity Address, Address Line Two	Suite 425
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30338
City Area Code	770
Local Phone Number	879-4400
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	WLMS
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 105,800,364
Entity Common Stock, Shares Outstanding		26,231,515
Entity Central Index Key	0001136294
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false
Auditor Name	Moss Adams LLP
Auditor Firm ID	659
Auditor Location	Dallas, Texas

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,482	$ 8,716
Restricted cash	468	468
Accounts receivable, net of allowance of $427 and $351, respectively	35,204	27,549
Contract assets	12,683	7,969
Other current assets	11,049	6,457
Total current assets	61,886	51,159
Property, plant and equipment, net	653	309
Goodwill	35,400	35,400
Intangible assets	12,500	12,500
Other long-term assets	5,712	5,712
Total assets	116,151	105,080
Current liabilities:
Accounts payable	12,168	6,210
Accrued compensation and benefits	12,388	15,800
Contract liabilities	3,412	2,529
Short-term borrowings	676	352
Current portion of long-term debt	1,050	1,050
Other current liabilities	11,017	7,170
Current liabilities of discontinued operations	316	342
Total current liabilities	41,027	33,453
Long-term debt, net	30,328	30,728
Deferred tax liabilities	2,442	2,440
Other long-term liabilities	1,647	2,098
Long-term liabilities of discontinued operations	4,250	4,466
Total liabilities	79,694	73,185
Commitments and contingencies (Note 10, 13, and 14)
Stockholders' equity:
Common stock, $0.01 par value, 170,000,000 shares authorized and 26,408,789 and 25,926,333 shares issued, respectively, and 25,939,621 and 25,336,442 shares outstanding, respectively	261	256
Paid-in capital	92,227	90,292
Accumulated other comprehensive income	(95)	28
Accumulated deficit	(55,930)	(58,673)
Treasury stock, at par (469,168 and 589,891 common shares, respectively)	(6)	(8)
Total stockholders' equity	36,457	31,895
Total liabilities and stockholders' equity	$ 116,151	$ 105,080

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
CONSOLIDATED BALANCE SHEETS
Accounts receivable allowance for doubtful accounts	$ 427	$ 351
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	170,000,000	170,000,000
Common stock, shares issued	26,408,789	25,926,333
Common stock, shares outstanding	25,939,621	25,336,442
Treasury stock at par	469,168	589,891

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue	$ 304,946	$ 269,051
Cost of revenue	273,520	235,035
Gross profit	31,426	34,016
Operating expenses
Selling and marketing expenses	950	569
General and administrative expenses	23,409	23,721
Depreciation and amortization expense	190	187
Total operating expenses	24,549	24,477
Operating income	6,877	9,539
Interest expense, net
Interest expense, net	5,001	6,083
Loss on extinguishment of debt		1,455
Other income, net	(1,619)	(1,367)
Total other expense, net	3,382	6,171
Income from continuing operations before income tax expense	3,495	3,368
Income tax expense	793	1,385
Income from continuing operations	2,702	1,983
Discontinued operations:
Income (loss) from discontinued operations before income tax expense	172	(405)
Income tax expense	131	40
Income (loss) from discontinued operations	41	(445)
Net income	$ 2,743	$ 1,538
Basic earnings (loss) per common share
Income from continuing operations	$ 0.11	$ 0.08
Income (loss) from discontinued operations		(0.02)
Basic earnings per common share	0.11	0.06
Diluted earnings (loss) per common share
Income from continuing operations	0.10	0.08
Income (loss) from discontinued operations		(0.02)
Diluted earnings per common share	$ 0.10	$ 0.06

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 2,743	$ 1,538
Foreign currency translation adjustment	(123)	(194)
Comprehensive income	$ 2,620	$ 1,344

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Thousands	Common Shares $0.01 Per Share	Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Treasury Shares	Total
Balance, Beginning at Dec. 31, 2019	$ 198	$ 81,964	$ 222	$ (60,211)	$ (9)	$ 22,164
Balance, Beginning (in shares) at Dec. 31, 2019	19,794,270				(737,075)
Increase (Decrease) in Shareholders' Equity
Issuance of common stock	$ 54	6,431				6,485
Issuance of common stock (in shares)	5,384,615
Issuance of restricted stock units					$ 2	2
Issuance of restricted stock units (in shares)	840,682				223,216
Tax withholding on restricted stock units	$ 4	(227)			$ (1)	(224)
Tax withholding on restricted stock units(in shares)	(93,234)				(76,032)
Stock-based compensation		2,124				2,124
Foreign currency translation			(194)			(194)
Net income				1,538		1,538
Balance, Ending at Dec. 31, 2020	$ 256	90,292	28	(58,673)	$ (8)	$ 31,895
Balance, Ending (in shares) at Dec. 31, 2020	25,926,333				(589,891)	25,926,333
Increase (Decrease) in Shareholders' Equity
Issuance of restricted stock units	$ 4				$ 2	$ 6
Issuance of restricted stock units (in shares)	482,456				120,723
Tax withholding on restricted stock units	$ 1	(559)				(558)
Stock-based compensation		2,494				2,494
Foreign currency translation			(123)			(123)
Net income				2,743		2,743
Balance, Ending at Dec. 31, 2021	$ 261	$ 92,227	$ (95)	$ (55,930)	$ (6)	$ 36,457
Balance, Ending (in shares) at Dec. 31, 2021	26,408,789				(469,168)	26,408,789

CONSOLIDATED STATEMENTS OF ST_2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01	$ 0.01

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating activities:
Net income	$ 2,743	$ 1,538
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Net (income) loss from discontinued operations	(41)	445
Deferred income tax provision	2	242
Depreciation and amortization on plant, property and equipment	190	187
Amortization of deferred financing costs	831	1,536
Amortization of debt discount	200
Gain on disposals of property, plant and equipment		(104)
Debt extinguishment expenses		1,211
Bad debt expense	77	(351)
Stock-based compensation	3,045	2,546
Changes in operating assets and liabilities
Accounts receivable	(7,826)	11,107
Contract assets	(4,700)	(699)
Other current assets	(4,682)	(3,903)
Other assets	(337)	3,972
Accounts payable	5,860	(10,438)
Accrued and other liabilities	(538)	4,532
Contract liabilities	879	(176)
Net cash provided by (used in) operating activities, continuing operations	(4,297)	11,645
Net cash used in operating activities, discontinued operations	(200)	(464)
Net cash provided by (used in) operating activities	(4,497)	11,181
Investing activities:
Purchase of property, plant and equipment	(538)	(117)
Net cash used in investing activities	(538)	(117)
Financing activities:
Repurchase of stock-based awards for payment of statutory taxes due on stock-based compensation	(554)	(227)
Proceeds from issuance of common stock		6,489
Debt issuance costs		(4,200)
Debt refinancing costs and original issue discount		(2,003)
Proceeds from short-term borrowings	289,379	262,695
Repayments of short-term borrowings	(289,055)	(273,192)
Proceeds from long-term debt		35,000
Repayments of long-term debt	(1,050)	(34,388)
Net cash used in financing activities	(1,280)	(9,826)
Effect of exchange rate change on cash	81	128
Net change in cash, cash equivalents and restricted cash	(6,234)	1,366
Cash, cash equivalents and restricted cash, beginning of year	9,184	7,818
Cash, cash equivalents and restricted cash, end of year	2,950	9,184
Supplemental Disclosures:
Cash paid for interest	3,674	4,316
Cash paid for income taxes, net of refunds	$ 2,128
Noncash fee related to revolving debt facility		$ 150

BUSINESS AND ORGANIZATION

BUSINESS AND ORGANIZATION	12 Months Ended
	Dec. 31, 2021
BUSINESS AND ORGANIZATION
BUSINESS AND ORGANIZATION	NOTE 1— BUSINESS AND ORGANIZATIO N Effective June 29, 2018, Global Power Equipment Group Inc. changed its name to Williams Industrial Services Group Inc. (together with its wholly owned subsidiaries, “Williams,” the “Company,” “we,” “us” or “our,” unless the context indicates otherwise) to better align its name with the Williams business, and its stock now trades on the NYSE American LLC (the “NYSE American”) under the ticker symbol “WLMS.” Williams has been safely helping plant owners and operators enhance asset value for more than 50 years. It provides a broad range of construction, maintenance, and support services to customers in energy, power, and industrial end markets. Williams’ mission is to be the preferred provider of construction, maintenance, and specialty services through commitment to superior safety performance, focus on innovation, and dedication to delivering unsurpassed value to its customers. The Company’s corporate headquarters are located in Atlanta, Georgia. The Company reports on a fiscal quarter basis utilizing a “modified” 4-4-5 calendar (modified in that the fiscal year always begins on January 1 and ends on December 31). However, the Company has continued to label its quarterly information using a calendar convention. The effects of this practice are modest and only exist when comparing interim period results. The reporting periods and corresponding fiscal interim periods are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Reporting Interim Period ​ Fiscal Interim Period ​ 2021 2020 Three Months Ended March 31 ​ January 1, 2021 to April 4, 2021 ​ January 1, 2020 to March 29, 2020 Three Months Ended June 30 ​ April 5, 2021 to July 4, 2021 ​ March 30, 2020 to June 28, 2020 Three Months Ended September 30 ​ July 5, 2021 to October 3, 2021 ​ June 29, 2020 to September 27, 2020 ​

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2021
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	NOTE 2—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation and Joint Ventures: In 2017, the Company formed a limited liability company (“LLC”) with an unrelated third party for the execution of a nuclear plant construction project. The Company has a 25 percent participation interest in this LLC, with distribution of expected gains and losses being proportionate to its participation interest. Although the LLC holds the construction contract with the client, the services required by the contract are performed by either the LLC, the Company, or the other member of the LLC, or by other subcontractors under subcontracting agreements with the LLC. The Company accounts for its investment in this LLC using the equity method. The Company’s investment in this LLC was $2.5 million and $1.7 million as of December 31, 2021 and 2020, respectively, and was included in other long-term assets on the consolidated balance sheets. Accounts receivable related to work performed for the Company’s unconsolidated investment in the LLC, included in accounts receivable, net, on the consolidated balance sheets, was $4.6 million and $3.9 million as of December 31, 2021 and 2020, respectively. The Company’s pro-rata share of net income from the LLC was $0.7 million and $1.2 million for the years ended December 31, 2021 and 2020, respectively, and was included in other (income) expense, net, on the consolidated statements of operations. In addition, the Company did not receive a dividend in 2021 but received a dividend of $1.7 million in 2020. Discontinued Operations: On July 11, 2018, Koontz-Wagner filed a voluntary petition for relief under Chapter 7 of Title 11 of the Bankruptcy Code with the U.S. Bankruptcy Court for the Southern District of Texas. The filing was for Koontz-Wagner only, not for the Company as a whole, and was completely separate and distinct from the Williams business and operations. Unless otherwise specified, the financial information presented in the accompanying financial statements and following notes relates to the Company’s continuing operations; it excludes any results of its discontinued operations. Please refer to “Note 4—Changes in Business” for financial information on the Company’s discontinued operations. Segment and Geographic Information The Company uses operating income (loss) to compare and evaluate its financial performance. For the year ended December 31, 2021, the Company earned 88.1% and 11.9% of its revenue in the U.S. and Canada, respectively. For the year ended December 31, 2020, the Company earned 86.7% and 13.3% of its revenue in the U.S. and Canada, respectively. Use of Estimates: Revenue Recognition: The Company’s contracts generally include a single performance obligation for which revenue is recognized over time, as performance obligations are satisfied, due to the continuous transfer of control to the customer. For cost-plus contracts, the Company recognizes revenue when services are performed and contractually billable based upon the hours incurred and agreed-upon hourly rates. Revenue on fixed-price contracts is recognized and invoiced over time using the cost-to-cost percentage-of-completion method. To the extent a contract is deemed to have multiple performance obligations, the Company allocates the transaction price of the contract to each performance obligation using its best estimate of the standalone selling price of each distinct good or service in the contract. The Company does not adjust the price of the contract for the effects of a significant financing component. Change orders are generally not distinct from the existing contract due to the significant integration service provided in the context of the contract and are accounted for as a modification of the existing contract and performance obligation. The Company believes these methods of revenue recognition most accurately reflect the economics of the transactions with its customers. The Company’s contracts may include several types of variable consideration, including change orders, rate true-up provisions, retainage, claims, incentives, penalties, and liquidated damages. The Company estimates the amount of revenue to be recognized on variable consideration using estimation methods that best predict the amount of consideration to which the Company expects to be entitled. The Company includes variable consideration in the estimated transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur or when the uncertainty associated with the variable consideration is resolved. The Company’s estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based on an assessment of its anticipated performance and all information (historical, current, and forecasted) that is reasonably available. The Company updates its estimate of the transaction price each reporting period and the effect of variable consideration on the transaction price is recognized as an adjustment to revenue on a cumulative catch-up basis. In circumstances where the Company cannot reasonably determine the outcome of a contract, it recognizes revenue over time as the work is performed, but only to the extent of recoverable costs incurred (i.e. zero margin). A loss provision is recorded for the amount of any estimated unrecoverable costs in excess of total estimated revenue on a contract as soon as the Company becomes aware. The Company generally provides a limited warranty for a term of two years or less following completion of services performed under its contracts. Historically, warranty claims have not resulted in material costs incurred. Cash and Cash Equivalents: Restricted Cash: Accounts Receivable: Property, Plant and Equipment: Long-Lived Assets: Goodwill and Indefinite-Lived Intangible Assets: The Company’s testing of goodwill for potential impairment involves the comparison of a reporting unit’s carrying value to its estimated fair value, which is determined using the income approach and market approaches. Similarly, the testing of the Company’s trade name for potential impairment involves the comparison of the carrying value of the trade name to its estimated fair value, which is determined using the relief from royalty method. If the carrying value of goodwill or the trade name is deemed to be unrecoverable, the excess of the carrying value over the estimated fair value is charged to results of operations in the period in which the impairment is determined. The Company did not have any impairment write-downs in 2021. Cost of Revenue: Warranty Costs: Insurance: Shipping and Handling Costs: — Advertising Costs: Stock-Based Compensation Expense: one Income Taxes: Under ASC 740—Income Taxes, the Financial Accounting Standards Board (“FASB”) requires companies to assess whether valuation allowances should be established against their deferred tax assets based on the consideration of all available positive and negative evidence, using a “more likely than not” standard. In making such assessments, significant weight is given to evidence that can be objectively verified. A company’s current or previous operating history is given more weight than its future outlook, although the Company does consider future taxable income projections, ongoing tax planning strategies and the limitation on the use of carryforward losses in determining valuation allowance needs. The Company establishes valuation allowances for its deferred tax assets if, based on the available evidence, it is more likely than not that some portion of or all the deferred tax assets will not be realized. During the ordinary course of business, there are many transactions and calculations for which the ultimate tax determination is uncertain. The Company recognizes the tax benefit from uncertain tax positions only if it is more likely than not to be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such a position are based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement. The Company believes that its benefits and accruals recognized are appropriate for all open audit years based on its assessment of many factors including past experience and interpretation of tax law. This assessment relies on estimates and assumptions and may involve a series of complex judgments about future events. To the extent that the final tax outcome of these matters is determined to be different than the amounts recorded, those differences will impact income tax expense in the period in which the determination is made. Other Comprehensive Income (Loss): Adoption of New Accounting Pronouncements In December 2019, the FASB issued ASU 2019-12, “Income Taxes”, which simplifies the accounting for income taxes by removing certain exceptions for investments, intraperiod allocations and interim calculations, and adding guidance to reduce complexity in accounting for income taxes. The update is effective for annual periods beginning after December 15, 2020, and interim periods within those fiscal years. Early adoption is permitted. The Company historically did not rely on the exceptions in computing the tax provision. The Company adopted the guidance as of January 1, 2021. The adoption of ASU 2019-12 did not have a material impact on the Company’s financial statements.

LEASES

LEASES	12 Months Ended
	Dec. 31, 2021
LEASES
LEASES	NOTE 3—LEASES In accordance with ASU 2016-02, the recognition of right-of-use assets and lease liabilities on the balance sheet for leases with terms greater than twelve months or leases that contain a purchase option that is reasonably certain to be exercised, require lessees to classify leases as either finance or operating leases. This classification will determine whether lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. The Company primarily leases office space and related equipment, as well as equipment, modular units and vehicles directly used in providing services to our customers. The Company’s leases have remaining lease terms of one renewal For leases with terms greater than twelve months, the Company records the related right-of-use assets and lease liabilities at the present value of the fixed lease payments over the term at the commencement date. The Company uses its incremental borrowing rate to determine the present value of the lease as the rate implicit in the lease is typically not readily determinable. Short-term leases (leases with an initial term of twelve months or less or leases that are cancelable by the lessee and lessor without significant penalties) are expensed on a straight-line basis over the lease term. The majority of the Company’s short-term leases relate to equipment used in delivering services to its customers. These leases are entered into at agreed upon hourly, daily, weekly, or monthly rental rates for an unspecified duration and typically have a termination for convenience provision. Such equipment leases are considered short-term in nature unless it is reasonably certain that the equipment will be leased for a term greater than twelve months. On September 2, 2021, the Company made the decision to relocate its corporate headquarters to Atlanta, Georgia and entered into a ten-year lease agreement. The lease is not presented as a right-of-use asset and lease liability because the commencement date of the lease is not expected to occur until early 2022 after substantial completion of the leasehold improvements as defined in the lease agreement. The lease liability amounts to $3.5 million with a present value of $2.3 million over a ten-year term. If the Company defaults, the landlord has the right to use the security deposit for rent or other payments due to other damages, injury, expense or liability as defined in the lease agreement. Although the security deposit shall be deemed the property of the landlord, any remaining balance of the security deposit shall be returned by the landlord to the Company after termination of the lease as the Company’s obligations under the lease have been fulfilled. The components of lease expense for the years ended December 31, 2021 and 2020 were as follows: ​ ​ ​ ​ ​ ​ ​ Lease Cost/(Sublease Income) (in thousands) ​ 2021 2020 Operating lease cost ​ $ 2,263 $ 3,679 Short-term lease cost ​ ​ 3,813 ​ 2,601 Sublease income ​ ​ (20) ​ - Total lease cost ​ $ 6,056 $ 6,280 ​ Lease cost related to finance leases was not significant for the year ended December 31, 2021. Information related to the Company’s right-of-use assets and lease liabilities for the years ended December 31, 2021 and 2020 was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Lease Assets/Liabilities (in thousands) ​ Balance Sheet Classification ​ 2021 ​ 2020 Lease Assets ​ ​ ​ ​ ​ ​ ​ ​ Right-of-use assets ​ Other long-term assets ​ $ 1,527 ​ $ 2,029 ​ ​ ​ ​ ​ ​ ​ ​ ​ Lease Liabilities ​ ​ ​ ​ ​ ​ ​ ​ Short-term lease liabilities ​ Other current liabilities ​ $ 1,606 ​ $ 1,362 Long-term lease liabilities ​ Other long-term liabilities ​ ​ 511 ​ ​ 1,011 Total lease liabilities ​ ​ ​ $ 2,117 ​ $ 2,373 ​ Supplemental information related to the Company’s leases for the year ended December 31, 2021 and 2020 are as follows: ​ ​ ​ ​ ​ ​ ​ (dollars in thousands) ​ 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: ​ ​ ​ ​ ​ Operating cash used by operating leases ​ $ 2,433 $ 4,021 Right-of-use assets obtained in exchange for new operating lease liabilities ​ $ 2,020 $ 2,290 Weighted-average remaining lease term - operating leases ​ ​ 1.36 years ​ 1.80 years Weighted-average remaining lease term - finance leases ​ ​ 2.23 years ​ 3.23 years Weighted-average discount rate - operating leases ​ ​ 9% ​ 9% Weighted-average discount rate - finance leases ​ ​ 9% ​ 9% ​ Total remaining lease payments under the Company’s operating and finance leases for the year ended December 31, 2021 are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Finance Leases Year Ended December 31, ​ (in thousands) 2022 ​ $ 1,701 ​ $ 6 2023 ​ ​ 390 ​ ​ 6 2024 ​ ​ 131 ​ ​ 1 2025 ​ ​ 3 ​ ​ - Total lease payments ​ $ 2,225 ​ $ 13 Less: interest ​ ​ (120) ​ ​ (1) Present value of lease liabilities ​ $ 2,105 ​ $ 12 ​

CHANGES IN BUSINESS

CHANGES IN BUSINESS	12 Months Ended
	Dec. 31, 2021
CHANGES IN BUSINESS.
CHANGES IN BUSINESS	NOTE 4—CHANGES IN BUSINESS Discontinued Operations Electrical Solutions During the fourth quarter of 2017, the Company made the decision to exit and sell its Electrical Solutions segment in an effort to reduce the Company’s outstanding term debt. The Company determined that the decision to exit this segment met the definition of a discontinued operation. As a result, this segment has been presented as a discontinued operation for all periods presented. On July 11, 2018, Koontz-Wagner filed a voluntary petition for relief under Chapter 7 of Title 11 of the Bankruptcy Code with the U.S. Bankruptcy Court for the Southern District of Texas. The filing was for Koontz-Wagner only, not for the Company as a whole, and was completely separate and distinct from the Williams business and operations. As a result of the July 11, 2018 bankruptcy of Koontz-Wagner, the Company recorded a pension withdrawal liability of $2.9 million related to Koontz-Wagner’s International Brotherhood of Electrical Workers Local Union 1392 (“IBEW”) multi-employer pension plan. After an arbitration process, on May 12, 2021, an arbitrator concluded that the IBEW used an incorrect per hour contribution rate in calculating the Company’s pension withdrawal liability, which resulted in the Company overpaying. The arbitrator directed IBEW to refund all overpayments, with interest, to the Company and to redetermine the Company’s payments going forward using the proper contribution rate. Accordingly, the Company’s overall pension withdrawal liability decreased by approximately $0.3 million. The pension liability is expected to be satisfied by annual cash payments of $0.3 million each, paid in quarterly installments, through 2038. The Company recorded a gain on disposal of approximately $0.3 million in 2021 to reduce its previously recorded estimated withdrawal liability to the new amount. Mechanical Solutions During the third quarter of 2017, the Company made the decision to exit and sell substantially all of the operating assets and liabilities of its Mechanical Solutions segment and determined that the decision to exit this segment met the definition of a discontinued operation. As a result, this segment has been presented as a discontinued operation for all periods presented. As of each of December 31, 2021 and 2020, the Company did not ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) 2021 ​ 2020 Liabilities: ​ ​ ​ ​ ​ ​ Current liabilities of discontinued operations ​ $ 316 ​ $ 342 Liability for pension obligation ​ ​ 2,368 ​ ​ 2,670 Liability for uncertain tax positions ​ ​ 1,882 ​ ​ 1,796 Long-term liabilities of discontinued operations ​ ​ 4,250 ​ ​ 4,466 Total liabilities of discontinued operations ​ $ 4,566 ​ $ 4,808 ​ The following table presents a reconciliation of the major classes of line items constituting the net income (loss) from discontinued operations. In accordance with GAAP, the amounts in the table below do not include an allocation of corporate overhead. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) 2021 2020 General and administrative expenses ​ $ 40 ​ $ 197 Gain on disposal - Electrical Solutions ​ ​ (288) ​ ​ — Interest expense ​ ​ 76 ​ ​ 208 Income (loss) from discontinued operations before income taxes ​ ​ 172 ​ ​ (405) Income tax expense ​ ​ 131 ​ ​ 40 Income (loss) from discontinued operations ​ $ 41 ​ $ (445) ​

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT	12 Months Ended
	Dec. 31, 2021
PROPERTY, PLANT AND EQUIPMENT
PROPERTY, PLANT AND EQUIPMENT	NOTE 5—PROPERTY, PLANT AND EQUIPMENT The Company’s property, plant, and equipment balances, by significant asset category, were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Estimated ​ December 31, ($ in thousands) ​ Useful Lives 2021 2020 Buildings and improvements ​ 5 - 39 years ​ $ 495 ​ $ 495 Machinery and equipment ​ 3 - 12 years ​ 4,663 ​ 4,236 Furniture and fixtures ​ 2 - 10 years ​ 8,695 ​ 8,695 Capital lease assets ​ 5 years ​ ​ 21 ​ ​ 27 ​ ​ ​ ​ 13,874 ​ 13,453 Less accumulated depreciation ​ ​ ​ ​ (13,221) ​ (13,144) Property, plant and equipment, net ​ ​ ​ $ 653 ​ $ 309 ​ Depreciation expense was approximately $0.2 million for each of the years ended December 31, 2021 and 2020. No impairment charges on property, plant and equipment were recognized for the years ended December 31, 2021 and 2020.

GOODWILL AND OTHER INTANGIBLE A

GOODWILL AND OTHER INTANGIBLE ASSETS	12 Months Ended
	Dec. 31, 2021
GOODWILL AND OTHER INTANGIBLE ASSETS
GOODWILL AND OTHER INTANGIBLE ASSETS	NOTE 6—GOODWILL AND OTHER INTANGIBLE ASSETS The Company determines the fair value of its reporting unit using a combination of income and market approaches. For purposes of the income approach, fair value is determined based on the present value of estimated future cash flows, discounted at an appropriate risk-adjusted rate. The Company uses its internal forecasts to estimate future cash flows and includes an estimate of long-term future growth rates based on its most recent views of the long-term outlook for the reporting unit, which falls within Level 3 of the fair value hierarchy. As of each of December 31, 2021 and 2020, the Company had $12.5 million of unamortizable indefinite-lived intangible assets related to its Williams Industrial Services Group trade name. The Company did not incur any amortization expense for each of the years ended December 31, 2021 and 2020, respectively. The Company determines the fair value of its trade name using the relief from royalty method. Under that method, the fair value of the trade name is determined by calculating the present value of the after tax cost savings associated with owning the asset and therefore not having to pay royalties for its use for the remainder of its estimated useful life. As a result of the Company’s annual indefinite-lived intangible asset impairment analysis as of October 1, 2021 and 2020, the Company determined the fair value of its trade name exceeded its book value; therefore, no impairment charge was recorded for the years ended December 31, 2021 and 2020. As a result of the Company’s annual goodwill impairment analysis as of October 1, 2021 and 2020, the Company determined that the fair value of its reporting unit exceeded its book value, and accordingly, no impairment charge was necessary for the years ended December 31, 2021 and 2020. Estimating the fair value of reporting units and trade names requires the use of estimates and significant judgments that are based on a number of factors including current and historical actual operating results, balance sheet carrying values, the Company’s most recent forecasts, and other relevant quantitative and qualitative information. If current or expected conditions deteriorate, it is reasonably possible that the judgments and estimates described above could change in future periods and result in impairment charges.

FINANCIAL INSTRUMENTS

FINANCIAL INSTRUMENTS	12 Months Ended
	Dec. 31, 2021
FINANCIAL INSTRUMENTS
FINANCIAL INSTRUMENTS	NOTE 7—FINANCIAL INSTRUMENTS Fair Value of Financial Instruments: The Company’s financial instruments as of December 31, 2021 and 2020 consisted primarily of cash and cash equivalents, restricted cash, receivables, payables, and debt instruments. The carrying values of these financial instruments approximate their respective fair values, as they are either short-term in nature or carry interest rates that are periodically adjusted to market rates. ​

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2021
INCOME TAXES
INCOME TAXES	NOTE 8—INCOME TAXES Income (loss) before income taxes was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) ​ 2021 2020 Domestic ​ $ (19) ​ $ (1,130) Foreign ​ ​ 3,514 ​ 4,498 Income from continuing operations ​ 3,495 ​ 3,368 Income (loss) from discontinued operations ​ ​ 172 ​ (405) Income before income tax expense ​ $ 3,667 ​ $ 2,963 ​ The following table summarizes the income tax expense (benefit) by jurisdiction: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) ​ 2021 2020 Current: ​ ​ ​ ​ ​ ​ Foreign ​ $ 922 ​ $ 1,183 Total current ​ 922 ​ 1,183 Deferred: ​ ​ ​ ​ ​ ​ Federal ​ (69) ​ 92 State ​ (192) ​ 149 Foreign ​ ​ 263 ​ ​ 1 Total deferred ​ 2 ​ 242 Income tax expense ​ $ 924 ​ $ 1,425 ​ Income tax expense (benefit) was allocated between continuing operations and discontinued operations as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) ​ 2021 2020 Continuing operations ​ $ 793 ​ $ 1,385 Discontinued operations ​ ​ 131 ​ ​ 40 Income tax expense ​ $ 924 ​ $ 1,425 ​ Effective Tax Rate Reconciliation The amount of the income tax expense (benefit) for continuing operations during the years ended December 31, 2021 and 2020 differs from the statutory federal income tax rate of 21%as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ ​ 2021 ​ 2020 (in thousands) ​ Amount Percent ​ Amount Percent Tax expense computed at the maximum U.S. statutory rate ​ $ 734 ​ 21.0 % ​ $ 707 ​ 21.0 % Difference resulting from state income taxes, net of federal income tax benefits ​ ​ 151 ​ 4.3 % ​ 646 ​ 19.2 % State tax rate difference ​ ​ (211) ​ (6.0) % ​ ​ (273) ​ (8.1) % Non-deductible expenses, other ​ ​ 125 ​ 3.6 % ​ 103 ​ 3.0 % APB 23 DTL ​ ​ 264 ​ 7.6 % ​ ​ — ​ — % Change in net operating loss carryforward ​ ​ (42) ​ (1.2) % ​ ​ (1,116) ​ (33.1) % Change in valuation allowance ​ ​ (660) ​ (18.9) % ​ ​ 914 ​ 27.1 % Change in foreign tax credits ​ ​ 359 ​ 10.3 % ​ 641 ​ 19.0 % Bankruptcy reorganization costs ​ ​ — ​ — % ​ (3) ​ (0.1) % Other, net ​ ​ 73 ​ 2.1 % ​ ​ (234) ​ (6.9) % Total tax expense ​ $ 793 ​ 22.8 % ​ $ 1,385 ​ 41.1 % ​ Deferred Taxes The significant components of deferred income tax assets and liabilities for continuing operations consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) ​ 2021 2020 Assets: ​ ​ ​ ​ ​ ​ Cost in excess of identifiable net assets of business acquired ​ $ 4,437 ​ $ 5,111 Reserves and other accruals ​ ​ 3,822 ​ 3,767 Tax credit carryforwards ​ ​ 5,754 ​ 6,440 Accrued compensation and benefits ​ ​ 2,077 ​ 3,577 State net operating loss carryforwards ​ ​ 13,493 ​ 12,465 Federal net operating loss carryforwards ​ ​ 47,653 ​ 46,572 Gain/loss on assets held for sale ​ ​ 1,457 ​ ​ 1,434 Other ​ ​ 6,438 ​ 5,633 ​ ​ ​ 85,131 ​ 84,999 Liabilities: ​ ​ ​ ​ ​ ​ Indefinite life intangibles ​ ​ (12,445) ​ (12,255) Property and equipment ​ ​ (473) ​ (407) Net deferred tax assets ​ ​ 72,213 ​ ​ 72,337 Valuation allowance for net deferred tax assets ​ ​ (74,655) ​ (74,777) Net deferred tax liability after valuation allowance ​ $ (2,442) ​ $ (2,440) ​ As of both December 31, 2021 and 2020, the Company had a net deferred tax liability related to its continuing operations of $2.4 million. The net deferred tax liabilities for the years ended December 31, 2021 and 2020 predominantly related to indefinite-lived intangibles deferred tax liabilities that can be used to offset deferred tax assets without valuation allowances. A net decrease in valuation allowances related to continuing operations of $0.1 million as of December 31, 2021 was recorded against the gross deferred tax asset balances as of December 31, 2021. As of December 31, 2021, the Company would need to generate $292.3 million of future U.S. pre-tax income to realize its deferred tax assets. Tax Cuts and Jobs Acts of 2017 On December 22, 2017, the Tax Act was signed into law, making significant changes to the Internal Revenue Code. Changes include, but are not limited to, a U.S. federal corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017. Net Operating Losses and Tax Credit Carryforwards As of December 31, 2021, the Company had $225.9 million of federal net operating loss carryforwards expiring between 2026 2037 2022 2041 2027 2022 2031 Under the Internal Revenue Code, the amount of and the benefits from net operating loss (“NOL”) and tax credit carryforwards may be limited or permanently impaired in certain circumstances. In addition, under the Tax Act, the amount of post 2017 NOLs that the Company is permitted to deduct in any taxable year is limited to 80% of its taxable income in such year, where taxable income is determined without regard to the NOL deduction itself. The Tax Act also generally eliminates the ability to carry back any NOL to prior taxable years, while allowing post 2017 unused NOLs to be carried forward indefinitely. Valuation Allowances Unremitted Earnings Uncertain Tax Positions A reconciliation of the beginning and ending amount of total unrecognized tax benefits is as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) 2021 2020 Unrecognized tax benefits at January 1 ​ $ 2,861 ​ $ 2,898 Reductions to unrecognized tax benefits from lapse of statutes of limitations ​ ​ (14) ​ (37) Unrecognized tax benefits at December 31 ​ $ 2,847 ​ $ 2,861 ​ ​ ​ ​ ​ ​ ​ Unrecognized tax benefits from discontinued operations at December 31 ​ $ 964 ​ $ 964 Unrecognized tax benefits from continuing operations at December 31 ​ ​ 1,883 ​ ​ 1,897 ​ ​ $ 2,847 ​ $ 2,861 ​ As of December 31, 2021 and 2020, the Company provided for a liability of approximately $2.8 million and $2.9 million, respectively for unrecognized tax benefits related to various federal, foreign, and state income tax matters. The Company has elected to classify interest and penalties related to uncertain income tax positions in income tax expense. As of December 31, 2021, the Company accrued $1.5 million for potential payment of interest and penalties, compared with $1.3 million accrued as of December 31, 2020. As of each of December 31, 2021 and 2020, the total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate was $0.4 million. In 2022, the Company anticipates it will release less than $0.1 million of accruals of uncertain tax positions as the statute of limitations related to these liabilities will lapse in 2022. On March 27, 2020, the Coronavirus Aid, Relief and Economic Security (“CARES”) Act was enacted and signed into U.S. law to provide economic relief to individuals and businesses facing economic hardship as a result of the COVID-19 pandemic. The Company has incorporated the impact of the CARES Act to the tax provision. In addition, the Company deferred payments of federal employer payroll taxes of approximately $4.9 million, as permitted by the CARES Act. The first half of the deferred amounts were paid in December 2021, and the second half will be paid in December 2022. The Company files a consolidated U.S. federal income tax return. Currently, the Company is not under examination for income tax purposes by any taxing jurisdiction. A presentation of open tax years by jurisdiction is as follows: ​ ​ ​ ​ ​ ​ Tax Jurisdiction Examination in Progress Open Tax Years for Examination United States None 2006 to Present Mexico None 2016 to Present China None 2013 to 2017 The Netherlands None 2018 Canada None 2019 to Present ​

REVENUE

REVENUE	12 Months Ended
	Dec. 31, 2021
REVENUE.
REVENUE	NOTE 9—REVENUE Disaggregation of Revenue Disaggregated revenue by type of contract was as follows. ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) ​ 2021 ​ 2020 Cost-plus reimbursement contracts ​ $ 258,823 ​ $ 238,529 Fixed-price contracts ​ ​ 46,123 ​ ​ 30,522 Total ​ $ 304,946 ​ $ 269,051 ​ Disaggregated revenue by the geographic area where the work was performed was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) ​ 2021 ​ 2020 United States ​ $ 268,726 ​ $ 233,297 Canada ​ ​ 36,220 ​ ​ 35,754 Total ​ $ 304,946 ​ $ 269,051 ​ Contract Balances The Company enters into contracts that allow for periodic billings over the contract term that are dependent upon specific advance billing terms, as services are provided, or as milestone billings based on completion of certain phases of work. Projects with performance obligations recognized over time that have costs and estimated earnings recognized to date in excess of cumulative billings are reported in the Company’s consolidated balance sheet as contract assets. Projects with performance obligations recognized over time that have cumulative billings in excess of costs and estimated earnings recognized to date are reported in the Company’s consolidated balance sheet as contract liabilities. At any point in time, each project in process could have either contract assets or contract liabilities. The following table provides information about contract assets and contract liabilities from contracts with customers. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) ​ 2021 2020 Costs incurred on uncompleted contracts ​ $ 273,520 ​ $ 235,035 Earnings recognized on uncompleted contracts ​ 31,426 ​ 34,016 Total ​ ​ 304,946 ​ 269,051 Less—billings to date ​ ​ (295,675) ​ (263,611) Net ​ $ 9,271 ​ $ 5,440 Contract assets ​ $ 12,683 ​ $ 7,969 Contract liabilities ​ ​ (3,412) ​ (2,529) Net ​ $ 9,271 ​ $ 5,440 ​ For the year ended December 31, 2021, the Company recognized revenue of approximately $2.2 million on approximately $2.5 million in the corresponding contract liability balance at December 31, 2020. Remaining Performance Obligations The following table includes estimated revenue expected to be recognized in the future related to performance obligations that were unsatisfied (or partially unsatisfied) as of December 31, 2021, as adjusted for the loss of a multi-year contract within the nuclear decommissioning market in early 2022. The Company’s total backlog as of December 31, 2021, excluding the lost decommissioning contract, was $270.7 million. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (in thousands) ​ 2022 ​ 2023 ​ Thereafter ​ Total Cost plus ​ $ 88,877 ​ $ 43,506 ​ $ 66,065 ​ $ 198,448 Lump sum ​ ​ 68,328 ​ ​ 3,948 ​ ​ - ​ ​ 72,276 Total ​ $ 157,205 ​ $ 47,454 ​ $ 66,065 ​ $ 270,724 ​

DEBT

DEBT	12 Months Ended
	Dec. 31, 2021
DEBT
DEBT	NOTE 10—DEBT As of December 31, 2021, and 2020, the Company had the following debt, net of unamortized deferred financing costs and unamortized debt discount: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) 2021 ​ 2020 Revolving Credit Facility ​ $ 676 ​ $ 352 Current portion of Term Loan ​ ​ 1,050 ​ ​ 1,050 Current debt ​ $ 1,726 ​ $ 1,402 ​ ​ ​ ​ ​ ​ ​ Term Loan ​ $ 32,900 ​ $ 33,950 Unamortized debt discount from refinancing ​ ​ (791) ​ ​ (991) Unamortized deferred financing costs ​ ​ (1,781) ​ ​ (2,231) Long-term debt, net ​ $ 30,328 ​ $ 30,728 ​ ​ ​ ​ ​ ​ ​ Total debt, net ​ $ 32,054 ​ $ 32,130 ​ Debt Refinancing The Revolving Credit Facility The Term Loan On the Closing Date, the Company and certain of its subsidiaries (the “Term Loan Borrowers”) entered into the Term Loan, Guarantee and Security Agreement with EICF Agent LLC, as agent for the lenders, CION Investment Corporation, as a lender and co-lead arranger, and the other lenders party thereto (the “Term Loan Agreement”), which provides for the Term Loan. The Closing Date Term Loan was fully drawn on the Closing Date, while the Delayed Draw Term Loan Facility is available upon the satisfaction of certain conditions precedent for up to 18 months following the Closing Date. The Term Loan Agreement matures on December 16, 2025. Borrowings under the Term Loan Agreement bear interest at LIBOR, plus a margin of 8.50% (if the Total Leverage Ratio (as defined in the Term Loan Agreement) is less than 2.50 The Term Loan Borrowers’ Obligations (as defined in the Term Loan Agreement) are guaranteed by certain of the Company’s material, wholly-owned subsidiaries, subject to customary exceptions (the “Term Loan Guarantors” and, together with the Term Loan Borrowers, the “Term Loan Credit Parties”). The Term Loan Credit Parties’ obligations are secured by first-priority security interests on substantially all of the Term Loan Credit Parties’ assets, as well as a second-priority security interest on the Term Loan Credit Parties’ accounts receivable and inventory, subject to the Intercreditor Agreement. Subject to certain conditions, the Term Loan Borrowers may voluntarily prepay the Term Loan on any Payment Date (as defined in the Term Loan Agreement), in whole or in part, in a minimum amount of $1.0 million of the outstanding principal amount, plus a Prepayment Fee (the “Prepayment Fee”), calculated as follows: if prepayment occurred prior to the first anniversary of the Closing Date, the Prepayment Fee would have been 3.00% of the principal amount being prepaid; if prepayment occurs on or after the first anniversary of the Closing Date and prior to the second anniversary of the Closing Date, the Prepayment Fee will be 2.00% of the principal amount being prepaid; and if prepayment occurs on or after the second anniversary of the Closing Date and prior to the third anniversary of the Closing Date, the Prepayment Fee will be 1.00% of the principal amount being prepaid. ​ Subject to certain exceptions, within 120 days of the end of each calendar year, beginning with the year ending December 31, 2021, the Term Loan Borrowers must prepay the Obligations in an amount equal to (1) (i) if the Total Leverage Ratio is greater than 3:00:1:00, 50.0% of Excess Cash Flow (as defined in the Term Loan Agreement) or (ii) if the Total Leverage Ratio is equal to or less than 3:00:1:00 and greater than 2:00:1:00, 25.0% of Excess Cash Flow, less (2) all voluntary prepayments made on the Term Loan during such calendar year; provided that, so long as no default or event of default has occurred and is continuing or would result therefrom, no such prepayment will be required unless Excess Cash Flow for such calendar year equals or exceeds $0.5 million. The Term Loan Agreement also requires mandatory prepayment of certain amounts in the event the Term Loan Borrowers receive proceeds from certain events and activities, including, among others, certain asset sales and casualty events, the issuance of indebtedness and equity interests, and the receipt of extraordinary receipts (with certain exclusions), plus, in certain instances, the applicable Prepayment Fee, calculated as set forth above. The Term Loan Agreement contains customary representations and warranties, as well as customary affirmative and negative covenants, in each case, with certain exceptions, limitations and qualifications. The Term Loan Agreement also requires the Term Loan Borrowers to regularly provide certain financial information to the lenders thereunder, maintain a maximum total leverage ratio and a minimum fixed charge coverage ratio, and comply with certain limitations on capital expenditures. Events of default under the Term Loan Agreement include, but are not limited to, a breach of certain covenants or any representations or warranties, failure to timely pay any amounts due and owing, the commencement of any bankruptcy or other insolvency proceeding, judgments in excess of certain acceptable amounts, the occurrence of a change in control, certain events related to ERISA matters, impairment of security interests in collateral or invalidity of guarantees or security documents, or a default or event of default under the Revolving Credit Agreement or the Intercreditor Agreement, in each case, with customary exceptions, limitations, grace periods and qualifications. If an event of default occurs, the Term Loan lenders may, among other things, declare all Obligations to be immediately due and payable, together with accrued interest and fees, and exercise remedies under the collateral documents relating to the Term Loan Agreement. The scheduled maturities of the Closing Date Term Loan are as follows: ​ ​ ​ ​ ​ December 31, ​ (in thousands) 2022 ​ 1,050 2023 ​ 1,050 2024 ​ ​ 1,050 2025 ​ ​ 30,800 Total ​ $ 33,950 ​ The Company’s borrowing rate under the Term Loan at December 31, 2021 was 9.5%. Letters of Credit and Bonds In line with industry practice, the Company is often required to provide letters of credit and payment and performance surety bonds to customers. These letters of credit and bonds provide credit support and security for the customer if the Company fails to perform its obligations under the applicable contract with such customer. no In addition, as of December 31, 2021 and December 31, 2020, the Company had outstanding payment and performance surety bonds of $67.6 million and $31.0 million, respectively. Deferred Financing Costs and Debt Discount: Deferred financing costs are amortized over the terms of the related debt facilities using the straight-line method. The following table summarizes the amortization of deferred financing costs related to the Company's debt facilities and recognized in interest expense on the consolidated statements of operations: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) ​ 2021 ​ 2020 Term loan* ​ $ 450 ​ $ 458 Debt discount ​ ​ 200 ​ ​ — Revolving credit facility ​ ​ 381 ​ ​ 304 Total ​ $ 1,031 ​ $ 762 ​ * 2020 does not include the $0.8 million of amortization expenses that were written off on the Prior Term Loan and included in the $1.5 million loss on extinguishment of debt. The following table summarizes unamortized deferred financing costs included on the Company's consolidated balance sheets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) ​ Location ​ 2021 ​ 2020 Term Loan ​ Long-term debt, net ​ $ 1,781 ​ $ 2,231 Debt discount ​ Long-term debt, net ​ ​ 791 ​ ​ 991 Revolving Credit Facility ​ Other long-term assets ​ ​ 1,509 ​ ​ 1,890 Total ​ ​ ​ $ 4,081 ​ $ 5,112 ​

EARNINGS PER SHARE

EARNINGS PER SHARE	12 Months Ended
	Dec. 31, 2021
EARNINGS PER SHARE
EARNINGS PER SHARE	NOTE 11—EARNINGS PER SHARE Basic earnings per common share are calculated by dividing net income by the weighted average common shares outstanding during the period. Diluted earnings per common share are based on the weighted average common shares outstanding during the period, adjusted for the potential dilutive effect of common shares that would be issued upon the vesting and release of restricted stock awards and units. Basic and diluted income per common share from continuing operations were calculated as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands, except share data) 2021 2020 Income from continuing operations ​ $ 2,702 ​ $ 1,983 ​ ​ ​ ​ ​ ​ ​ Basic income per common share: ​ ​ ​ ​ ​ ​ Weighted average common shares outstanding ​ ​ 25,506,748 ​ ​ 23,676,458 ​ ​ ​ ​ ​ ​ ​ Basic income per common share ​ $ 0.11 ​ $ 0.08 ​ ​ ​ ​ ​ ​ ​ Diluted income per common share: ​ ​ ​ ​ ​ ​ Weighted average common shares outstanding ​ ​ 25,506,748 ​ 23,676,458 ​ ​ ​ ​ ​ ​ ​ Diluted effect: ​ ​ ​ ​ ​ Unvested portion of restricted stock units and awards ​ ​ 630,896 ​ ​ 541,539 Weighted average diluted common shares outstanding ​ 26,137,644 ​ 24,217,997 ​ ​ ​ ​ ​ ​ Diluted income per common share ​ $ 0.10 ​ $ 0.08 ​ In March 2020, the Company successfully completed its fully backstopped $7.0 million rights offering, which expired March 2, 2020, pursuant to which the Company issued 5,384,615 shares of its common stock and received net proceeds of $6.5 million. As of December 31, 2021, the Company’s 25,939,621 shares outstanding included 215,956 shares of contingently issued but unvested restricted stock. As of December 31, 2020, the Company’s 25,336,442 shares outstanding included 550,857 shares of contingently issued but unvested restricted stock. Restricted stock is excluded from the calculation of basic weighted average shares outstanding, but its impact, if dilutive, is included in the calculation of diluted weighted average shares outstanding. The weighted-average number of shares outstanding used in the computation of basic and diluted earnings per share does not include the effect of the following potential outstanding common stock. The effects of these potentially outstanding shares were not included in the calculation of diluted earnings per share because the effect would have been anti-dilutive: ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2021 2020 Unvested service-based restricted stock and restricted stock unit awards — ​ 354,257 Unvested performance- and market-based restricted stock unit awards 765,857 ​ 1,628,606 ​

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION	12 Months Ended
	Dec. 31, 2021
STOCK-BASED COMPENSATION.
STOCK-BASED COMPENSATION PLANS	NOTE 12—STOCK-BASED COMPENSATION Description of the Plans The Company has one equity incentive plan: the 2015 Equity Incentive Plan, as amended and restated on May 12, 2020 (the “2015 Plan”). The 2015 Plan allows for the issuance of up to 3,500,000 shares of stock to the Company’s employees and directors in the form of a variety of instruments, including stock options, restricted stock, restricted share units, stock appreciation rights and other share-based awards. The Company provides the option to repurchase the number of shares required to satisfy tax withholding obligations in connection with the vesting of restricted stock unit awards issued to employees participating in the 2015 Plan. The 2015 Plan also allows for cash-based awards. Generally, all participants who voluntarily terminate their employment with the Company forfeit 100% of all unvested equity awards. Persons who are terminated without cause, or in some cases leave for good reason, are generally entitled to proportionate vesting. The vesting of proportionate time-based shares is accelerated and such shares distributed upon such individuals’ termination date. Proportionate market-based and performance-based restricted shares remain categorized as unvested pending final conclusion on the achievement of the related awards. As of December 31, 2021, the Company had approximately 1,298,219 shares available under the 2015 Plan to settle previously granted awards. During 2021, the Company granted (including modifications) 1,833,465 restricted shares and restricted stock units under the 2015 Plan and granted (including modifications) 336,463 restricted stock units outside of the 2015 Plan. Total stock-based compensation expense during the years ended December 31, 2021 and 2020 was $3.0 million and $2.5 million, respectively, with no related excess tax benefit recognized, and was included in general and administrative expenses on the Company’s consolidated statements of operations. As of December 31, 2021, total unrecognized compensation expense related to all unvested restricted stock and restricted stock unit awards for which terms and conditions are known totaled $4.1 million, which is expected to be recognized over a weighted average period of 1.7 years. The fair value of shares that vested during 2021 and 2020 based on the stock price at the applicable vesting date was $2.3 million and $0.8 million, respectively. The weighted average grant date fair value of the Company’s restricted stock units was $3.27 and $1.98 for the years ended December 31, 2021 and 2020, respectively. Service-Based Restricted Stock and Unit Awards: Information for service-based restricted stock and restricted stock units as of December 31, 2021 was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted-Average ​ ​ ​ ​ Grant Date ​ ​ Shares ​ Fair Value per Share Unvested restricted stock and restricted stock units at December 31, 2020 ​ 1,409,415 ​ ​ 2.41 Granted ​ 551,173 ​ ​ 3.77 Vested ​ (907,593) ​ ​ 1.86 Forfeited ​ (167,195) ​ ​ 1.37 Unvested restricted stock and restricted stock units at December 31, 2021 ​ 885,800 ​ $ 1.37 ​ Performance-based awards: three During 2021, the Company made a grant of 33,334 performance-based restricted stock units under the 2020 long-term incentive program. This award was granted under the 2015 Plan and, at the Company’s discretion, can be settled in cash or shares. This award had two Modification to 2020 Long-Term Incentive Program. 2/3 1/3 three Accounting for the performance-based restricted stock units granted and modified in 2021 is based on management’s expectations as to the number of performance-based restricted stock units that are likely to vest at the conclusion of the performance period, at which point accounting expense is trued-up to reflect the actual number of performance-based restricted stock units that vest. In order to evaluate the performance-based restricted stock, the Company engaged a third-party consultant to assist in calculating the amount modified along with the modified fair value of the performance based restricted stock units. Management reviewed the assumptions in the calculation and the amount modified and the modification date fair value and determined they appeared reasonable. Therefore, management determined the fair value of each performance period on March 5, 2021 (modification date) to be based on a stock price of $3.49 (March 5, 2021 stock price) and began recognizing compensation cost over a period of 24 months. Based on this analysis, it was determined that as of December 31, 2020 management expected that no performance-based restricted stock units would vest. Accordingly, the Company would accrue no compensation expense for fiscal 2020. The compensation expense for 2020 was subsequently reversed in 2021 and was expensed at “Threshold” (based on management’s assessment) for a new requisite service period of two years rather than the initial service requisite period of three years. In May 2021, the Company recognized a $0.6 million reduction of stock compensation expense for the year of 2021. Additionally, management reconvened in January 2022 to analyze the performance-based restricted stock unit agreement modified and granted in 2021 and, based on discussion with management, the Company would not meet the performance objectives for fiscal year ending on December 31, 2021. The Company engaged a third-party firm to assist in estimating the amount of shares that are expected to vest in the future which provided a “most likely” scenario that would be used to estimate the amount of stock-compensation costs to accrue going into 2022 while determining the amount to adjust in 2021 in order to accrue the correct amount of shares throughout the remaining performance period. Management reviewed the assumptions used in the calculation of the amount and determined they appeared reasonable. Therefore, management determined that out of 1.2 million shares, “most likely” 0.5 million shares, would vest in March 31, 2023 and March 31, 2024. The Company accrued $0.3 million of stock-compensation expense recorded in general and administrative expenses on the income statement and paid-in capital on the balance sheet. Information for performance-based restricted stock units (excluding those accounted for as liability awards because the award was based on a cash amount and not based on an amount of restricted share units) as of December 31, 2021 was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted-Average ​ ​ ​ ​ Grant Date ​ ​ Shares ​ Fair Value per Share Unvested restricted stock and restricted stock units at December 31, 2020 ​ 882,048 ​ $ 2.35 Granted ​ 70,834 ​ ​ 5.60 Modified ​ 1,098,362 ​ ​ 3.49 Vested ​ (180,078) ​ ​ 3.21 Canceled ​ (1,098,362) ​ ​ 1.22 Forfeited ​ (225,671) ​ ​ 7.35 Unvested restricted stock and restricted stock units at December 31, 2021 ​ 547,133 ​ $ 3.68 ​ Market-based awards: The awards are subject to a market condition as defined under Accounting Standards Codification (ASC) Topic 718, Stock Compensation. As such, ASC Topic 718 generally requires the Company to determine the fair value of the awards (both pre- and post-modification) based on a lattice valuation model, such as a Monte Carlo Simulation (or other appropriate valuation model). Management analyzed the modification of these market-based restricted share unit grants and engaged Meridian to assist the Company with estimating the incremental accounting expense associated with the modification. The incremental accounting expense associated with each award modification is calculated as the difference between the following two Monte Carlo valuations: (i) Pre-Modification: Estimated value on March 5, 2021 (modification date) based on original award terms, (ii) Post-Modification: Estimated value on March 5, 2021 (modification date) based on modified award terms. The market based restricted share unit modifications will be expensed at the incremental accounting expense over a new requisite service period for twenty-one months starting in April 2021 and ending on December 31, 2022. As of April 2021, this will result in an aggregate incremental expense for modification of all three awards to be $0.8 million accrued throughout the 21-month Information for market-based restricted stock units as of December 31, 2021 was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted-Average ​ ​ ​ ​ Grant Date ​ ​ Shares ​ Fair Value per Share Modified ​ 449,559 ​ ​ 1.74 Forfeited ​ (80,034) ​ ​ 1.77 Unvested restricted stock units at December 31, 2021 ​ 369,525 ​ $ 1.73 ​ ​ ​ ​ ​ ​ 2016 Grant Modification ​ ​ ​ ​ Expected term (years) 1.82 ​ Expected volatility ​ ​ 57.6 % Expected dividend yield ​ ​ 0.00 % Risk-free interest rate ​ ​ 0.13 % Weighted-average grant date fair value ​ ​ $ 1.87 ​ 2017 Grant Modification ​ ​ ​ ​ Expected term (years) ​ 1.82 ​ Expected volatility ​ ​ 57.6 % Expected dividend yield ​ ​ 0.00 % Risk-free interest rate ​ ​ 0.13 % Weighted-average grant date fair value ​ ​ $ 1.65 ​ 2018 Grant Modification ​ ​ ​ ​ Expected term (years) ​ 1.82 ​ Expected volatility ​ ​ 57.6 % Expected dividend yield ​ ​ 0.00 % Risk-free interest rate ​ ​ 0.13 % Weighted-average grant date fair value ​ ​ $ 2.11 ​ ​

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS	12 Months Ended
	Dec. 31, 2021
EMPLOYEE BENEFIT PLANS.
EMPLOYEE BENEFIT PLANS	NOTE 13—EMPLOYEE BENEFIT PLANS Defined Contribution Plan: Multiemployer Pension Plans: 1. Assets contributed to the multiemployer pension plan by one employer may be used to provide benefits to employees of other participating employers. 2. If a participating employer stops contributing to the multiemployer pension plan, the unfunded obligations of the multiemployer pension plan may be borne by the remaining participating employers. 3. If the Company chooses to stop participating in some of its multiemployer pension plans, it may be required to pay those plans an amount based on the underfunded status of the multiemployer pension plan, referred to as a withdrawal liability. The Company’s participation in these multiemployer pension plans during the year ended December 31, 2021 is outlined in the following table. All information in the tables is as of December 31, 2021, unless otherwise stated. The “EIN/Pension Plan Number” column provides the Employer Identification Number (“EIN”) and the three-digit plan number, if applicable. Unless otherwise noted, the most recent Pension Protection Act zone status available during 2021 and 2020 is for the respective plan’s fiscal year-end as of 2021 and 2020, respectively. The zone status is based on information that the Company received from the plan and is certified by the plan’s actuary. Among other factors, plans in the green zone are at least 80 percent funded. If a plan is critical and declining, the plan sponsor may file an application with the Secretary of the Treasury requesting a temporary or permanent reduction of benefits to keep the plan from running out of money. If a fund is in critical status, adjustable benefits may be reduced and no lump sum distributions in excess of $5,000 can be made. Plans that are in critical and endangered status are required to adopt a plan aimed at restoring the financial health of the benefit plan. The “Rehab Plan Status Pending/Implemented” column indicates plans for which a financial improvement plan or a rehabilitation plan is either pending or has been implemented. The next to last column lists the expiration date of the collective-bargaining agreement to which the plans are subject. Certain plans have been aggregated in the “All Others” line in the following table, as the contributions to each of these individual plans are not material. Only with respect to multiemployer pension plans, we considered contributions in excess of $0.1 million in any period disclosed to be individually significant. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Expiration ​ ​ ​ ​ ​ Pension ​ Rehab Plan ​ ($ in thousands) ​ ​ ​ Date of ​ ​ ​ ​ ​ ​ Protection Act ​ status ​ Contributions by ​ ​ ​ Collective ​ ​ ​ ​ EIN/Pension ​ Zone Status ​ Pending/ ​ the Company ​ Surcharge ​ Bargaining ​ ​ Pension Fund ​ Plan Number ​ 2021 ​ 2020 ​ Implemented ​ 2021 ​ 2020 ​ Imposed ​ Agreement ​ Notes Boilermaker-Blacksmith National Pension Trust ​ 48-6168020 001 ​ Endangered ​ Endangered ​ FIP 01/01/20 ​ 4,263 ​ 2,622 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 3,4,6.9 Central Pension Fund of the IUOE and Participating Employers ​ 36-6052390 001 ​ Green ​ Green ​ ​ ​ 366 ​ 336 ​ No (8) ​ Multiple Agreements ​ 2, 3, 6, 9, 10 Central States, Southeast, and Southwest Pension Fund ​ 36-6044243 001 ​ Critical & Declining ​ Critical & Declining ​ Rehab Plan 14 Years ​ 103 ​ 74 ​ No (7) ​ Multiple Agreements ​ 2, 3, 9, 10 Excavators Union Local 731 Pension Fund ​ 13-1809825 001 ​ Green ​ Green ​ ​ ​ 523 ​ 441 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 6 IBEW Local 1579 Pension Plan ​ 58-1254974 001 ​ Green ​ Green ​ ​ ​ 1,239 ​ 774 ​ No (8) ​ Agreement through end of Job ​ 10 Iron Workers District Council of Tennessee Valley & Vicinity Pension Plan ​ 62-6098036 001 ​ ​ ​ Green ​ ​ ​ 316 ​ 185 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 3, 11 IUPAT Industry Pension Plan ​ 52-6073909 001 ​ Seriously Endangered ​ Seriously Endangered ​ FIP - 2017 ​ 184 ​ 2,327 ​ No (8) ​ Multiple Agreements ​ 2, 3, 5, 10 Laborers National Pension Fund ​ 75-1280827 001 ​ Critical ​ Critical ​ Rehab - 2017 ​ 417 ​ 225 ​ No (7) ​ Multiple Agreements ​ 1, 2, 3, 5, 9, 10 National Asbestos Workers Pension Plan ​ 52-6038497 001 ​ Critical ​ Critical ​ Rehab plan in place ​ 1,258 ​ 1,165 ​ No (7) ​ Annual Agreements-Automatic Renewal ​ 3 National Electrical Benefits Fund ​ 53-0181657 001 ​ Green ​ Green ​ ​ ​ 578 ​ 354 ​ No (8) ​ Multiple Agreements ​ 2, 3, 4, 5, 9, 10 New Jersey Building Laborers Statewide Pension Fund ​ 22-6077693 001 ​ Critical ​ Critical ​ Rehab plan in place ​ 1,340 ​ 616 ​ No (7) ​ Annual Agreements-Automatic Renewal ​ 9 United Association National Pension Fund ​ 52-6152779 001 ​ Endangered ​ Endangered ​ FIP 04/05/10 ​ 315 ​ 201 ​ No (8) ​ Multiple Agreements ​ 2, 3, 4, 5, 9, 10 Laborers Local 235 Pension Fund ​ 13-6186984 001 ​ ​ ​ Green ​ ​ ​ 152 ​ 17 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 9, 11 Plumbers & Steamfitters Local Union No. 43 Pension Fund ​ 62-6101288 001 ​ ​ ​ Green ​ ​ ​ 265 ​ 180 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 3, 11 Southern Ironworkers Pension Plan ​ 59-6227091 001 ​ ​ ​ Green ​ ​ ​ 270 ​ 315 ​ No (8) ​ Agreement through end of Job ​ 10, 11 Tri-State Carpenters & Joiners Pension Trust Fund ​ 62-0976048 001 ​ Endangered ​ Endangered ​ Rehab Plan 2009 ​ 512 ​ 310 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 3 Washington State Plumbing & Pipefitting Industry Pension Plan ​ 91-6029141 001 ​ ​ ​ Green ​ ​ ​ 112 ​ 15 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 4, 11 Washington-Idaho Laborers-Employers Pension Trust ​ 91-6123988 001 ​ ​ ​ Green ​ ​ ​ 185 ​ 45 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 4, 11 Washington-Idaho-Montana Carpenters-Employers Retirement Fund ​ 91-6123987 001 ​ Endangered ​ Green ​ ​ ​ 376 ​ 59 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 4 IUOE Local 825 Pension Plan ​ 22-6033380 001 ​ ​ ​ Green ​ ​ ​ 242 ​ 141 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 9, 11 Massachusetts Laborers' Pension Fund ​ 04-6128298 001 ​ ​ ​ Green ​ ​ ​ 485 ​ 137 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 9, 11 IUOE Local 4 Pension Fund ​ 04-6013863 001 ​ ​ ​ Green ​ ​ ​ 311 ​ 111 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 9, 11 Local Union 400 IBEW Pension Plan ​ 22-6257847 001 ​ Green ​ Green ​ ​ ​ 229 ​ 22 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 9 Electricians Pension Plan, IBEW 995 ​ 72-6057089 001 ​ Critical ​ Critical ​ Rehab Plan 2009 ​ 131 ​ 0 ​ No (7) ​ Annual Agreements-Automatic Renewal ​ 9 Western States Insulators and Allied Workers Pension ​ 51-0155190 001 ​ Green ​ Green ​ ​ ​ 111 ​ 19 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 4 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ All Others ​ ​ ​ ​ ​ ​ ​ ​ ​ 1,559 ​ 1,120 ​ ​ ​ ​ ​ ​ Total ​ ​ ​ ​ ​ ​ ​ ​ ​ 15,842 ​ 11,811 ​ ​ ​ ​ ​ ​ ​ (1) Defined Benefit Plans for Unions employed through the GPPMA agreement for St. Lucie and Turkey Point. (2) Defined Benefit Plans for Unions employed through the Southern Company Power Maintenance & Modification Agreement. The Southern Company SCMMA expires 07/31/2026 and renews each year unless terminated. The individual Union CBA range from 1 to 3 years in duration. (3) Defined Benefit Plans for Unions employed through the TVA PMMA and Other Agreements. The TVA Labor Agreements are annual agreements that automatically renew each year. (4) Defined Benefit Plans for Unions employed through the GPPMA agreement for Columbia Generating Station. The GPPMA Agreements are annual agreements that automatically renew each year. (5) Regional and National Defined Benefit Funds for multiple unions employed under different labor agreements. (6) Defined Benefit Plan for Union employed at Con Ed sites. (7) No Surcharge required if proper Rehabilitation Plan adopted in labor agreement. (8) No Surcharge required if Plan is not in Critical or Critical & Declining Status. (9) Defined Benefit Plans for Unions employed through the GPPMA agreement for San Onofre, Oyster Creek, Pilgrim, LaSalle, Byron, Quad Cities, Peach Bottom, Limerick, Ginna, Point Beach, Waterford III, Salem/Hope Creek and DC Cook Nuclear Plants (Holtec). Also work under Decommissioning Agreement at Oyster Creek and Pilgrim (CDI). (10) Defined Benefit Plans for Unions employed through the Nuclear Power Construction Agreement. The Nuclear Power Construction Agreement is for new work at Voglte and runs through the duration of the project. (11) The status of this plan had not been issued as of the date of filing this Form 10-K. A plan in green status with a calendar year has the option to issue its Annual Funding Notice in March or April of the subsequent year . Employees covered by multiemployer pension plans are hired for project-based building and construction purposes. The Company’s participation level in these plans varies as a result. The Company believes that its responsibility for potential withdrawal liabilities associated with participating in multiemployer plans is limited because the building and construction trades exemption should apply to the substantial majority of the Company’s plan contributions. However, pursuant to the Pension Protection Act of 2006 and other applicable laws, the Company is also exposed to other potential liabilities associated with plans that are underfunded. As of December 31, 2021, the Company had been notified that certain pension plans were in critical funding status. Currently, certain plans are developing, or have developed, a rehabilitation plan that may call for a reduction in participant benefits or an increase in future employer contributions. Therefore, in the future, the Company could be responsible for potential surcharges, excise taxes and/or additional contributions related to these plans. Additionally, market conditions and the number of participating employers remaining in each plan may result in a reorganization, insolvency or mass withdrawal that could materially affect the funded status of multiemployer plans and the Company’s potential withdrawal liability, if applicable. The Company continues to actively monitor, assess, and take steps to limit its potential exposure to any surcharges, excise taxes, additional contributions and/or withdrawal liabilities. However, the Company cannot, at this time, estimate the full amount, or even the range, of this potential exposure.

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2021
COMMITMENTS AND CONTINGENCIES
COMMITMENTS AND CONTINGENCIES	NOTE 14—COMMITMENTS AND CONTINGENCIES Litigation and Claims: The Company completed a bankruptcy filing of its Koontz-Wagner subsidiary on July 11, 2018. This could require the Company to incur legal fees and other expenses related to liabilities from this bankruptcy filing. While the Company does not anticipate these liabilities will have a material adverse effect on its results of operations, cash flows and financial position, and although the statute of limitations has run on certain claims that the Chapter 7 Trustee for the Koontz-Wagner estate might assert, there can be no assurance of the outcome. The filing was for Koontz-Wagner only, not for the Company as a whole, and was completely separate and distinct from the Williams business and operations. For additional information, please refer to “Note 4—Changes in Business” to the consolidated financial statements. The acquiror of certain assets from a former operating unit of the Company has been named as a defendant in an asbestos personal injury lawsuit and has submitted a claim for indemnification and tendered defense of the matter to the Company. The Company has assumed defense of the matter subject to a reservation of rights and objection to the claim for indemnification. Neither the Company nor its predecessors ever mined, manufactured, produced or distributed asbestos fiber, the material that allegedly caused the injury underlying this action. The Company does not expect that this claim will have a material adverse effect on its financial position, results of operations or liquidity. Moreover, during 2012, the Company secured insurance coverage that will help to reimburse the defense costs and potential indemnity obligations of its former operating unit relating to these claims. The Company intends to vigorously defend all currently active actions, and it does not anticipate that this action will have a material adverse effect on its financial position, results of operations or liquidity. However, the outcomes of any legal action cannot be predicted and, therefore, there can be no assurance that this will be the case. Insurance: The Company’s consolidated balance sheets include amounts representing its probable estimated liability related to insurance-related claims that are known and have been asserted against the Company, and for insurance-related claims that are believed to have been incurred, but had not yet been reported as of December 31, 2021 and 2020. As of December 31, 2021 and 2020, the Company provided $0.9 million and $0.5 million, respectively in letters of credit and provided cash collateral of $1.5 million and $0.6 million, respectively, as security for possible workers’ compensation claims. Executive Severance:

MAJOR CUSTOMERS AND CONCENTRATI

MAJOR CUSTOMERS AND CONCENTRATION OF CREDIT RISK	12 Months Ended
	Dec. 31, 2021
MAJOR CUSTOMERS AND CONCENTRATION OF CREDIT RISK
MAJOR CUSTOMERS AND CONCENTRATION OF CREDIT RISK	NOTE 15—MAJOR CUSTOMERS AND CONCENTRATION OF CREDIT RISK The Company has certain customers that represented more than 10 percent of its consolidated accounts receivable. The balance for these customers as a percentage of the consolidated accounts receivable was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, Customer 2021 2020 Tennessee Valley Authority ​ 18% ​ 15% ​ Bruce Power ​ 17% ​ 11% ​ Southern Nuclear Operating Company ​ 16% ​ 24% ​ Comprehensive Decommissioning International ​ 10% ​ * ​ All others ​ 39% ​ 50% ​ Total ​ 100% ​ 100% ​ ​ *Less than 10% ​ The Company has certain customers that represented more than 10 percent of consolidated revenue. The revenue for these customers as a percentage of the consolidated revenue was as follows: ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, Customer 2021 ​ 2020 Southern Nuclear Operating Company 16% ​ 31% Bruce Power ​ 12% ​ 13% Tennessee Valley Authority 11% ​ 18% GUBMK ​ 11% ​ * Comprehensive Decommissioning International ​ 10% ​ * Richmond County Constructors, LLC ("RCC") ​ * ​ 11% All others 40% ​ 27% Total 100% ​ 100% ​ *Less than 10%

OTHER SUPPLEMENTAL INFORMATION

OTHER SUPPLEMENTAL INFORMATION	12 Months Ended
	Dec. 31, 2021
OTHER SUPPLEMENTAL INFORMATION
OTHER SUPPLEMENTAL INFORMATION	NOTE 16—OTHER SUPPLEMENTAL INFORMATION ​ Other current assets consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) 2021 2020 Sales tax receivable - Canada ​ $ 4,866 ​ ​ 2,097 Unamortized commercial insurance premiums ​ ​ 2,389 ​ ​ 1,903 Prepaid expenses ​ ​ 1,136 ​ ​ 700 Letters of credit ​ ​ 883 ​ ​ 474 Cash collateral on commercial insurance claims ​ ​ 595 ​ ​ 585 Other short-term assets ​ ​ 1,180 ​ ​ 698 Total ​ $ 11,049 ​ $ 6,457 ​ Other long-term assets consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) ​ 2021 ​ 2020 Equity method investment in RCC ​ $ 2,521 ​ $ 1,737 Right-of-use lease assets ​ ​ 1,527 ​ ​ 2,029 Other long-term assets ​ ​ 1,664 ​ ​ 1,946 Total ​ $ 5,712 ​ $ 5,712 ​ Other current liabilities consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) 2021 2020 Accrued workers compensation ​ $ 430 ​ $ 506 Accrued taxes ​ ​ 126 ​ ​ 68 Accrued job cost ​ ​ 2,433 ​ ​ 1,081 Accrued legal and professional fees ​ ​ 113 ​ ​ 72 Sales tax payable - Canada ​ ​ 5,135 ​ ​ 2,372 Stock Compensation ​ ​ 938 ​ ​ 448 Short-term lease liability ​ ​ 1,606 ​ ​ 1,362 Other accrued liabilities ​ ​ 236 ​ ​ 1,261 Total ​ $ 11,017 ​ $ 7,170 ​ ​ Other long-term liabilities consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) 2021 2020 Long-term lease liability ​ ​ 511 ​ ​ 1,011 Liability for uncertain tax positions ​ ​ 1,136 ​ ​ 1,087 Total ​ $ 1,647 ​ $ 2,098 ​ ​ Disaggregated long-lived assets by the geographic area were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) 2021 2020 United States ​ $ 52,669 ​ $ 51,825 Canada ​ ​ 86 ​ ​ 206 Total ​ $ 52,755 ​ $ 52,031 ​

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	Dec. 31, 2021
SUBSEQUENT EVENTS
SUBSEQUENT EVENTS	NOTE 17—SUBSEQUENT EVENTS In early 2022, the Company lost a major contract in Canada and is in the process of exiting the Canadian market. This former customer contributed 12% of total revenue and 15% of gross margin in 2021. Secondly, the Company lost a multi-year contract within the nuclear decommissioning market in early 2022. This customer contributed 10% of total revenue and 8% of gross margin in 2021. The Company is pursuing legal action, where appropriate, against a former Company employee and the competitor involved in this situation. The loss of the multi-year contract contributed to a loss of approximately $361.0 million in backlog for the years 2022 through 2029, including backlog of approximately $30.0 million for 2022 and $50.0 million for 2023. This contract did not represent a material amount of gross profit and is expected to contribute an estimated 3.5% of total gross profit in 2022. The Company’s total backlog as of December 31, 2021, excluding the lost decommissioning contract, was approximately $270.7 million.

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2021
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Principles of Consolidation and Joint Ventures	Principles of Consolidation and Joint Ventures: In 2017, the Company formed a limited liability company (“LLC”) with an unrelated third party for the execution of a nuclear plant construction project. The Company has a 25 percent participation interest in this LLC, with distribution of expected gains and losses being proportionate to its participation interest. Although the LLC holds the construction contract with the client, the services required by the contract are performed by either the LLC, the Company, or the other member of the LLC, or by other subcontractors under subcontracting agreements with the LLC. The Company accounts for its investment in this LLC using the equity method. The Company’s investment in this LLC was $2.5 million and $1.7 million as of December 31, 2021 and 2020, respectively, and was included in other long-term assets on the consolidated balance sheets. Accounts receivable related to work performed for the Company’s unconsolidated investment in the LLC, included in accounts receivable, net, on the consolidated balance sheets, was $4.6 million and $3.9 million as of December 31, 2021 and 2020, respectively. The Company’s pro-rata share of net income from the LLC was $0.7 million and $1.2 million for the years ended December 31, 2021 and 2020, respectively, and was included in other (income) expense, net, on the consolidated statements of operations. In addition, the Company did not receive a dividend in 2021 but received a dividend of $1.7 million in 2020.
Discontinued Operations	Discontinued Operations: On July 11, 2018, Koontz-Wagner filed a voluntary petition for relief under Chapter 7 of Title 11 of the Bankruptcy Code with the U.S. Bankruptcy Court for the Southern District of Texas. The filing was for Koontz-Wagner only, not for the Company as a whole, and was completely separate and distinct from the Williams business and operations. Unless otherwise specified, the financial information presented in the accompanying financial statements and following notes relates to the Company’s continuing operations; it excludes any results of its discontinued operations. Please refer to “Note 4—Changes in Business” for financial information on the Company’s discontinued operations.
Segment and Geographic Information	Segment and Geographic Information The Company uses operating income (loss) to compare and evaluate its financial performance. For the year ended December 31, 2021, the Company earned 88.1% and 11.9% of its revenue in the U.S. and Canada, respectively. For the year ended December 31, 2020, the Company earned 86.7% and 13.3% of its revenue in the U.S. and Canada, respectively.
Use of Estimates	Use of Estimates:
Revenue Recognition	Revenue Recognition: The Company’s contracts generally include a single performance obligation for which revenue is recognized over time, as performance obligations are satisfied, due to the continuous transfer of control to the customer. For cost-plus contracts, the Company recognizes revenue when services are performed and contractually billable based upon the hours incurred and agreed-upon hourly rates. Revenue on fixed-price contracts is recognized and invoiced over time using the cost-to-cost percentage-of-completion method. To the extent a contract is deemed to have multiple performance obligations, the Company allocates the transaction price of the contract to each performance obligation using its best estimate of the standalone selling price of each distinct good or service in the contract. The Company does not adjust the price of the contract for the effects of a significant financing component. Change orders are generally not distinct from the existing contract due to the significant integration service provided in the context of the contract and are accounted for as a modification of the existing contract and performance obligation. The Company believes these methods of revenue recognition most accurately reflect the economics of the transactions with its customers. The Company’s contracts may include several types of variable consideration, including change orders, rate true-up provisions, retainage, claims, incentives, penalties, and liquidated damages. The Company estimates the amount of revenue to be recognized on variable consideration using estimation methods that best predict the amount of consideration to which the Company expects to be entitled. The Company includes variable consideration in the estimated transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur or when the uncertainty associated with the variable consideration is resolved. The Company’s estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based on an assessment of its anticipated performance and all information (historical, current, and forecasted) that is reasonably available. The Company updates its estimate of the transaction price each reporting period and the effect of variable consideration on the transaction price is recognized as an adjustment to revenue on a cumulative catch-up basis. In circumstances where the Company cannot reasonably determine the outcome of a contract, it recognizes revenue over time as the work is performed, but only to the extent of recoverable costs incurred (i.e. zero margin). A loss provision is recorded for the amount of any estimated unrecoverable costs in excess of total estimated revenue on a contract as soon as the Company becomes aware. The Company generally provides a limited warranty for a term of two years or less following completion of services performed under its contracts. Historically, warranty claims have not resulted in material costs incurred.
Cash and Cash Equivalents	Cash and Cash Equivalents:
Restricted Cash	Restricted Cash:
Accounts Receivable	Accounts Receivable:
Property, Plant and Equipment	Property, Plant and Equipment:
Long-Lived Assets	Long-Lived Assets:
Goodwill and Indefinite-Lived Intangible Assets	Goodwill and Indefinite-Lived Intangible Assets: The Company’s testing of goodwill for potential impairment involves the comparison of a reporting unit’s carrying value to its estimated fair value, which is determined using the income approach and market approaches. Similarly, the testing of the Company’s trade name for potential impairment involves the comparison of the carrying value of the trade name to its estimated fair value, which is determined using the relief from royalty method. If the carrying value of goodwill or the trade name is deemed to be unrecoverable, the excess of the carrying value over the estimated fair value is charged to results of operations in the period in which the impairment is determined. The Company did not have any impairment write-downs in 2021.
Cost of Revenue	Cost of Revenue:
Warranty Costs	Warranty Costs:
Insurance	Insurance:
Shipping and Handling Costs	Shipping and Handling Costs: —
Advertising Costs	Advertising Costs:
Stock-based Compensation Expense	Stock-Based Compensation Expense: one
Income Taxes	Income Taxes: Under ASC 740—Income Taxes, the Financial Accounting Standards Board (“FASB”) requires companies to assess whether valuation allowances should be established against their deferred tax assets based on the consideration of all available positive and negative evidence, using a “more likely than not” standard. In making such assessments, significant weight is given to evidence that can be objectively verified. A company’s current or previous operating history is given more weight than its future outlook, although the Company does consider future taxable income projections, ongoing tax planning strategies and the limitation on the use of carryforward losses in determining valuation allowance needs. The Company establishes valuation allowances for its deferred tax assets if, based on the available evidence, it is more likely than not that some portion of or all the deferred tax assets will not be realized. During the ordinary course of business, there are many transactions and calculations for which the ultimate tax determination is uncertain. The Company recognizes the tax benefit from uncertain tax positions only if it is more likely than not to be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the financial statements from such a position are based on the largest benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement. The Company believes that its benefits and accruals recognized are appropriate for all open audit years based on its assessment of many factors including past experience and interpretation of tax law. This assessment relies on estimates and assumptions and may involve a series of complex judgments about future events. To the extent that the final tax outcome of these matters is determined to be different than the amounts recorded, those differences will impact income tax expense in the period in which the determination is made.
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss):
Adoption of New Accounting Pronouncements	Adoption of New Accounting Pronouncements In December 2019, the FASB issued ASU 2019-12, “Income Taxes”, which simplifies the accounting for income taxes by removing certain exceptions for investments, intraperiod allocations and interim calculations, and adding guidance to reduce complexity in accounting for income taxes. The update is effective for annual periods beginning after December 15, 2020, and interim periods within those fiscal years. Early adoption is permitted. The Company historically did not rely on the exceptions in computing the tax provision. The Company adopted the guidance as of January 1, 2021. The adoption of ASU 2019-12 did not have a material impact on the Company’s financial statements.

BUSINESS AND ORGANIZATION (Tabl

BUSINESS AND ORGANIZATION (Tables)	12 Months Ended
	Dec. 31, 2021
BUSINESS AND ORGANIZATION
Reporting periods and corresponding fiscal interim periods	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Reporting Interim Period ​ Fiscal Interim Period ​ 2021 2020 Three Months Ended March 31 ​ January 1, 2021 to April 4, 2021 ​ January 1, 2020 to March 29, 2020 Three Months Ended June 30 ​ April 5, 2021 to July 4, 2021 ​ March 30, 2020 to June 28, 2020 Three Months Ended September 30 ​ July 5, 2021 to October 3, 2021 ​ June 29, 2020 to September 27, 2020

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Dec. 31, 2021
LEASES
Schedule of components of lease expense	​ ​ ​ ​ ​ ​ ​ Lease Cost/(Sublease Income) (in thousands) ​ 2021 2020 Operating lease cost ​ $ 2,263 $ 3,679 Short-term lease cost ​ ​ 3,813 ​ 2,601 Sublease income ​ ​ (20) ​ - Total lease cost ​ $ 6,056 $ 6,280
Schedule of right-of use assets and lease liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Lease Assets/Liabilities (in thousands) ​ Balance Sheet Classification ​ 2021 ​ 2020 Lease Assets ​ ​ ​ ​ ​ ​ ​ ​ Right-of-use assets ​ Other long-term assets ​ $ 1,527 ​ $ 2,029 ​ ​ ​ ​ ​ ​ ​ ​ ​ Lease Liabilities ​ ​ ​ ​ ​ ​ ​ ​ Short-term lease liabilities ​ Other current liabilities ​ $ 1,606 ​ $ 1,362 Long-term lease liabilities ​ Other long-term liabilities ​ ​ 511 ​ ​ 1,011 Total lease liabilities ​ ​ ​ $ 2,117 ​ $ 2,373
Schedule of supplemental information	​ ​ ​ ​ ​ ​ ​ (dollars in thousands) ​ 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: ​ ​ ​ ​ ​ Operating cash used by operating leases ​ $ 2,433 $ 4,021 Right-of-use assets obtained in exchange for new operating lease liabilities ​ $ 2,020 $ 2,290 Weighted-average remaining lease term - operating leases ​ ​ 1.36 years ​ 1.80 years Weighted-average remaining lease term - finance leases ​ ​ 2.23 years ​ 3.23 years Weighted-average discount rate - operating leases ​ ​ 9% ​ 9% Weighted-average discount rate - finance leases ​ ​ 9% ​ 9%
Schedule of remaining lease payments under operating leases	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Finance Leases Year Ended December 31, ​ (in thousands) 2022 ​ $ 1,701 ​ $ 6 2023 ​ ​ 390 ​ ​ 6 2024 ​ ​ 131 ​ ​ 1 2025 ​ ​ 3 ​ ​ - Total lease payments ​ $ 2,225 ​ $ 13 Less: interest ​ ​ (120) ​ ​ (1) Present value of lease liabilities ​ $ 2,105 ​ $ 12
Schedule of remaining lease payments under finance leases	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Finance Leases Year Ended December 31, ​ (in thousands) 2022 ​ $ 1,701 ​ $ 6 2023 ​ ​ 390 ​ ​ 6 2024 ​ ​ 131 ​ ​ 1 2025 ​ ​ 3 ​ ​ - Total lease payments ​ $ 2,225 ​ $ 13 Less: interest ​ ​ (120) ​ ​ (1) Present value of lease liabilities ​ $ 2,105 ​ $ 12

CHANGES IN BUSINESS (Tables)

CHANGES IN BUSINESS (Tables)	12 Months Ended
	Dec. 31, 2021
Discontinued operations disposed of by sale
Schedule of Financial Information of Disposal Group	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) 2021 ​ 2020 Liabilities: ​ ​ ​ ​ ​ ​ Current liabilities of discontinued operations ​ $ 316 ​ $ 342 Liability for pension obligation ​ ​ 2,368 ​ ​ 2,670 Liability for uncertain tax positions ​ ​ 1,882 ​ ​ 1,796 Long-term liabilities of discontinued operations ​ ​ 4,250 ​ ​ 4,466 Total liabilities of discontinued operations ​ $ 4,566 ​ $ 4,808 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) 2021 2020 General and administrative expenses ​ $ 40 ​ $ 197 Gain on disposal - Electrical Solutions ​ ​ (288) ​ ​ — Interest expense ​ ​ 76 ​ ​ 208 Income (loss) from discontinued operations before income taxes ​ ​ 172 ​ ​ (405) Income tax expense ​ ​ 131 ​ ​ 40 Income (loss) from discontinued operations ​ $ 41 ​ $ (445)

PROPERTY, PLANT AND EQUIPMENT (

PROPERTY, PLANT AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2021
PROPERTY, PLANT AND EQUIPMENT
Schedule of property, plant and equipment balances, by significant asset category	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Estimated ​ December 31, ($ in thousands) ​ Useful Lives 2021 2020 Buildings and improvements ​ 5 - 39 years ​ $ 495 ​ $ 495 Machinery and equipment ​ 3 - 12 years ​ 4,663 ​ 4,236 Furniture and fixtures ​ 2 - 10 years ​ 8,695 ​ 8,695 Capital lease assets ​ 5 years ​ ​ 21 ​ ​ 27 ​ ​ ​ ​ 13,874 ​ 13,453 Less accumulated depreciation ​ ​ ​ ​ (13,221) ​ (13,144) Property, plant and equipment, net ​ ​ ​ $ 653 ​ $ 309

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2021
INCOME TAXES
Income (loss) before income taxes	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) ​ 2021 2020 Domestic ​ $ (19) ​ $ (1,130) Foreign ​ ​ 3,514 ​ 4,498 Income from continuing operations ​ 3,495 ​ 3,368 Income (loss) from discontinued operations ​ ​ 172 ​ (405) Income before income tax expense ​ $ 3,667 ​ $ 2,963
Summary of income tax expense (benefit)	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) ​ 2021 2020 Current: ​ ​ ​ ​ ​ ​ Foreign ​ $ 922 ​ $ 1,183 Total current ​ 922 ​ 1,183 Deferred: ​ ​ ​ ​ ​ ​ Federal ​ (69) ​ 92 State ​ (192) ​ 149 Foreign ​ ​ 263 ​ ​ 1 Total deferred ​ 2 ​ 242 Income tax expense ​ $ 924 ​ $ 1,425
Income tax expense (benefit) allocated between continuing operations and discontinued operations	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) ​ 2021 2020 Continuing operations ​ $ 793 ​ $ 1,385 Discontinued operations ​ ​ 131 ​ ​ 40 Income tax expense ​ $ 924 ​ $ 1,425
Schedule of effective income tax expense rate for continuing operations	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ ​ 2021 ​ 2020 (in thousands) ​ Amount Percent ​ Amount Percent Tax expense computed at the maximum U.S. statutory rate ​ $ 734 ​ 21.0 % ​ $ 707 ​ 21.0 % Difference resulting from state income taxes, net of federal income tax benefits ​ ​ 151 ​ 4.3 % ​ 646 ​ 19.2 % State tax rate difference ​ ​ (211) ​ (6.0) % ​ ​ (273) ​ (8.1) % Non-deductible expenses, other ​ ​ 125 ​ 3.6 % ​ 103 ​ 3.0 % APB 23 DTL ​ ​ 264 ​ 7.6 % ​ ​ — ​ — % Change in net operating loss carryforward ​ ​ (42) ​ (1.2) % ​ ​ (1,116) ​ (33.1) % Change in valuation allowance ​ ​ (660) ​ (18.9) % ​ ​ 914 ​ 27.1 % Change in foreign tax credits ​ ​ 359 ​ 10.3 % ​ 641 ​ 19.0 % Bankruptcy reorganization costs ​ ​ — ​ — % ​ (3) ​ (0.1) % Other, net ​ ​ 73 ​ 2.1 % ​ ​ (234) ​ (6.9) % Total tax expense ​ $ 793 ​ 22.8 % ​ $ 1,385 ​ 41.1 %
Components of deferred income tax assets and liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) ​ 2021 2020 Assets: ​ ​ ​ ​ ​ ​ Cost in excess of identifiable net assets of business acquired ​ $ 4,437 ​ $ 5,111 Reserves and other accruals ​ ​ 3,822 ​ 3,767 Tax credit carryforwards ​ ​ 5,754 ​ 6,440 Accrued compensation and benefits ​ ​ 2,077 ​ 3,577 State net operating loss carryforwards ​ ​ 13,493 ​ 12,465 Federal net operating loss carryforwards ​ ​ 47,653 ​ 46,572 Gain/loss on assets held for sale ​ ​ 1,457 ​ ​ 1,434 Other ​ ​ 6,438 ​ 5,633 ​ ​ ​ 85,131 ​ 84,999 Liabilities: ​ ​ ​ ​ ​ ​ Indefinite life intangibles ​ ​ (12,445) ​ (12,255) Property and equipment ​ ​ (473) ​ (407) Net deferred tax assets ​ ​ 72,213 ​ ​ 72,337 Valuation allowance for net deferred tax assets ​ ​ (74,655) ​ (74,777) Net deferred tax liability after valuation allowance ​ $ (2,442) ​ $ (2,440)
Reconciliation of unrecognized tax benefits	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) 2021 2020 Unrecognized tax benefits at January 1 ​ $ 2,861 ​ $ 2,898 Reductions to unrecognized tax benefits from lapse of statutes of limitations ​ ​ (14) ​ (37) Unrecognized tax benefits at December 31 ​ $ 2,847 ​ $ 2,861 ​ ​ ​ ​ ​ ​ ​ Unrecognized tax benefits from discontinued operations at December 31 ​ $ 964 ​ $ 964 Unrecognized tax benefits from continuing operations at December 31 ​ ​ 1,883 ​ ​ 1,897 ​ ​ $ 2,847 ​ $ 2,861
Presentation of open tax years by jurisdiction	​ ​ ​ ​ ​ ​ Tax Jurisdiction Examination in Progress Open Tax Years for Examination United States None 2006 to Present Mexico None 2016 to Present China None 2013 to 2017 The Netherlands None 2018 Canada None 2019 to Present

REVENUE (Tables)

REVENUE (Tables)	12 Months Ended
	Dec. 31, 2021
REVENUE.
Schedule of disaggregation of revenue	Disaggregated revenue by type of contract was as follows. ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) ​ 2021 ​ 2020 Cost-plus reimbursement contracts ​ $ 258,823 ​ $ 238,529 Fixed-price contracts ​ ​ 46,123 ​ ​ 30,522 Total ​ $ 304,946 ​ $ 269,051 ​ Disaggregated revenue by the geographic area where the work was performed was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands) ​ 2021 ​ 2020 United States ​ $ 268,726 ​ $ 233,297 Canada ​ ​ 36,220 ​ ​ 35,754 Total ​ $ 304,946 ​ $ 269,051
Costs and estimated earnings in excess of billings or billings in excess of costs and estimated earnings	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) ​ 2021 2020 Costs incurred on uncompleted contracts ​ $ 273,520 ​ $ 235,035 Earnings recognized on uncompleted contracts ​ 31,426 ​ 34,016 Total ​ ​ 304,946 ​ 269,051 Less—billings to date ​ ​ (295,675) ​ (263,611) Net ​ $ 9,271 ​ $ 5,440 Contract assets ​ $ 12,683 ​ $ 7,969 Contract liabilities ​ ​ (3,412) ​ (2,529) Net ​ $ 9,271 ​ $ 5,440
Schedule of transaction price allocated to the remaining performance obligations	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (in thousands) ​ 2022 ​ 2023 ​ Thereafter ​ Total Cost plus ​ $ 88,877 ​ $ 43,506 ​ $ 66,065 ​ $ 198,448 Lump sum ​ ​ 68,328 ​ ​ 3,948 ​ ​ - ​ ​ 72,276 Total ​ $ 157,205 ​ $ 47,454 ​ $ 66,065 ​ $ 270,724

DEBT (Tables)

DEBT (Tables)	12 Months Ended
	Dec. 31, 2021
DEBT
Schedule of debt	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) 2021 ​ 2020 Revolving Credit Facility ​ $ 676 ​ $ 352 Current portion of Term Loan ​ ​ 1,050 ​ ​ 1,050 Current debt ​ $ 1,726 ​ $ 1,402 ​ ​ ​ ​ ​ ​ ​ Term Loan ​ $ 32,900 ​ $ 33,950 Unamortized debt discount from refinancing ​ ​ (791) ​ ​ (991) Unamortized deferred financing costs ​ ​ (1,781) ​ ​ (2,231) Long-term debt, net ​ $ 30,328 ​ $ 30,728 ​ ​ ​ ​ ​ ​ ​ Total debt, net ​ $ 32,054 ​ $ 32,130
Summary of maturity of the closing date term loans	​ ​ ​ ​ ​ December 31, ​ (in thousands) 2022 ​ 1,050 2023 ​ 1,050 2024 ​ ​ 1,050 2025 ​ ​ 30,800 Total ​ $ 33,950
Schedule of deferred financing costs amortized to Interest Expense	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) ​ 2021 ​ 2020 Term loan* ​ $ 450 ​ $ 458 Debt discount ​ ​ 200 ​ ​ — Revolving credit facility ​ ​ 381 ​ ​ 304 Total ​ $ 1,031 ​ $ 762 ​ * 2020 does not include the $0.8 million of amortization expenses that were written off on the Prior Term Loan and included in the $1.5 million loss on extinguishment of debt.
Schedule of unamortized deferred financing costs	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) ​ Location ​ 2021 ​ 2020 Term Loan ​ Long-term debt, net ​ $ 1,781 ​ $ 2,231 Debt discount ​ Long-term debt, net ​ ​ 791 ​ ​ 991 Revolving Credit Facility ​ Other long-term assets ​ ​ 1,509 ​ ​ 1,890 Total ​ ​ ​ $ 4,081 ​ $ 5,112

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	12 Months Ended
	Dec. 31, 2021
EARNINGS PER SHARE
Schedule of calculation of basic and diluted earnings per common share	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, (in thousands, except share data) 2021 2020 Income from continuing operations ​ $ 2,702 ​ $ 1,983 ​ ​ ​ ​ ​ ​ ​ Basic income per common share: ​ ​ ​ ​ ​ ​ Weighted average common shares outstanding ​ ​ 25,506,748 ​ ​ 23,676,458 ​ ​ ​ ​ ​ ​ ​ Basic income per common share ​ $ 0.11 ​ $ 0.08 ​ ​ ​ ​ ​ ​ ​ Diluted income per common share: ​ ​ ​ ​ ​ ​ Weighted average common shares outstanding ​ ​ 25,506,748 ​ 23,676,458 ​ ​ ​ ​ ​ ​ ​ Diluted effect: ​ ​ ​ ​ ​ Unvested portion of restricted stock units and awards ​ ​ 630,896 ​ ​ 541,539 Weighted average diluted common shares outstanding ​ 26,137,644 ​ 24,217,997 ​ ​ ​ ​ ​ ​ Diluted income per common share ​ $ 0.10 ​ $ 0.08
Schedule anti-dilutive potentially outstanding shares were not included in the calculation of diluted earnings (loss) per share	​ ​ ​ ​ ​ ​ Year Ended December 31, ​ 2021 2020 Unvested service-based restricted stock and restricted stock unit awards — ​ 354,257 Unvested performance- and market-based restricted stock unit awards 765,857 ​ 1,628,606

STOCK-BASED COMPENSATION (Table

STOCK-BASED COMPENSATION (Tables)	12 Months Ended
	Dec. 31, 2021
Service vesting
Summary of unvested restricted stock award activity	​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted-Average ​ ​ ​ ​ Grant Date ​ ​ Shares ​ Fair Value per Share Unvested restricted stock and restricted stock units at December 31, 2020 ​ 1,409,415 ​ ​ 2.41 Granted ​ 551,173 ​ ​ 3.77 Vested ​ (907,593) ​ ​ 1.86 Forfeited ​ (167,195) ​ ​ 1.37 Unvested restricted stock and restricted stock units at December 31, 2021 ​ 885,800 ​ $ 1.37
Market-based vesting
Summary of unvested restricted stock award activity	​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted-Average ​ ​ ​ ​ Grant Date ​ ​ Shares ​ Fair Value per Share Modified ​ 449,559 ​ ​ 1.74 Forfeited ​ (80,034) ​ ​ 1.77 Unvested restricted stock units at December 31, 2021 ​ 369,525 ​ $ 1.73
Assumptions used to estimate the fair value of market-based restricted stock awards granted	​ ​ ​ ​ ​ ​ 2016 Grant Modification ​ ​ ​ ​ Expected term (years) 1.82 ​ Expected volatility ​ ​ 57.6 % Expected dividend yield ​ ​ 0.00 % Risk-free interest rate ​ ​ 0.13 % Weighted-average grant date fair value ​ ​ $ 1.87 ​ 2017 Grant Modification ​ ​ ​ ​ Expected term (years) ​ 1.82 ​ Expected volatility ​ ​ 57.6 % Expected dividend yield ​ ​ 0.00 % Risk-free interest rate ​ ​ 0.13 % Weighted-average grant date fair value ​ ​ $ 1.65 ​ 2018 Grant Modification ​ ​ ​ ​ Expected term (years) ​ 1.82 ​ Expected volatility ​ ​ 57.6 % Expected dividend yield ​ ​ 0.00 % Risk-free interest rate ​ ​ 0.13 % Weighted-average grant date fair value ​ ​ $ 2.11 ​
Performance Vesting
Summary of unvested restricted stock award activity	​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted-Average ​ ​ ​ ​ Grant Date ​ ​ Shares ​ Fair Value per Share Unvested restricted stock and restricted stock units at December 31, 2020 ​ 882,048 ​ $ 2.35 Granted ​ 70,834 ​ ​ 5.60 Modified ​ 1,098,362 ​ ​ 3.49 Vested ​ (180,078) ​ ​ 3.21 Canceled ​ (1,098,362) ​ ​ 1.22 Forfeited ​ (225,671) ​ ​ 7.35 Unvested restricted stock and restricted stock units at December 31, 2021 ​ 547,133 ​ $ 3.68

EMPLOYEE BENEFIT PLANS (Tables)

EMPLOYEE BENEFIT PLANS (Tables)	12 Months Ended
	Dec. 31, 2021
EMPLOYEE BENEFIT PLANS.
Summary of plan information relating to participation in multiemployer pension plans	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Expiration ​ ​ ​ ​ ​ Pension ​ Rehab Plan ​ ($ in thousands) ​ ​ ​ Date of ​ ​ ​ ​ ​ ​ Protection Act ​ status ​ Contributions by ​ ​ ​ Collective ​ ​ ​ ​ EIN/Pension ​ Zone Status ​ Pending/ ​ the Company ​ Surcharge ​ Bargaining ​ ​ Pension Fund ​ Plan Number ​ 2021 ​ 2020 ​ Implemented ​ 2021 ​ 2020 ​ Imposed ​ Agreement ​ Notes Boilermaker-Blacksmith National Pension Trust ​ 48-6168020 001 ​ Endangered ​ Endangered ​ FIP 01/01/20 ​ 4,263 ​ 2,622 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 3,4,6.9 Central Pension Fund of the IUOE and Participating Employers ​ 36-6052390 001 ​ Green ​ Green ​ ​ ​ 366 ​ 336 ​ No (8) ​ Multiple Agreements ​ 2, 3, 6, 9, 10 Central States, Southeast, and Southwest Pension Fund ​ 36-6044243 001 ​ Critical & Declining ​ Critical & Declining ​ Rehab Plan 14 Years ​ 103 ​ 74 ​ No (7) ​ Multiple Agreements ​ 2, 3, 9, 10 Excavators Union Local 731 Pension Fund ​ 13-1809825 001 ​ Green ​ Green ​ ​ ​ 523 ​ 441 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 6 IBEW Local 1579 Pension Plan ​ 58-1254974 001 ​ Green ​ Green ​ ​ ​ 1,239 ​ 774 ​ No (8) ​ Agreement through end of Job ​ 10 Iron Workers District Council of Tennessee Valley & Vicinity Pension Plan ​ 62-6098036 001 ​ ​ ​ Green ​ ​ ​ 316 ​ 185 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 3, 11 IUPAT Industry Pension Plan ​ 52-6073909 001 ​ Seriously Endangered ​ Seriously Endangered ​ FIP - 2017 ​ 184 ​ 2,327 ​ No (8) ​ Multiple Agreements ​ 2, 3, 5, 10 Laborers National Pension Fund ​ 75-1280827 001 ​ Critical ​ Critical ​ Rehab - 2017 ​ 417 ​ 225 ​ No (7) ​ Multiple Agreements ​ 1, 2, 3, 5, 9, 10 National Asbestos Workers Pension Plan ​ 52-6038497 001 ​ Critical ​ Critical ​ Rehab plan in place ​ 1,258 ​ 1,165 ​ No (7) ​ Annual Agreements-Automatic Renewal ​ 3 National Electrical Benefits Fund ​ 53-0181657 001 ​ Green ​ Green ​ ​ ​ 578 ​ 354 ​ No (8) ​ Multiple Agreements ​ 2, 3, 4, 5, 9, 10 New Jersey Building Laborers Statewide Pension Fund ​ 22-6077693 001 ​ Critical ​ Critical ​ Rehab plan in place ​ 1,340 ​ 616 ​ No (7) ​ Annual Agreements-Automatic Renewal ​ 9 United Association National Pension Fund ​ 52-6152779 001 ​ Endangered ​ Endangered ​ FIP 04/05/10 ​ 315 ​ 201 ​ No (8) ​ Multiple Agreements ​ 2, 3, 4, 5, 9, 10 Laborers Local 235 Pension Fund ​ 13-6186984 001 ​ ​ ​ Green ​ ​ ​ 152 ​ 17 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 9, 11 Plumbers & Steamfitters Local Union No. 43 Pension Fund ​ 62-6101288 001 ​ ​ ​ Green ​ ​ ​ 265 ​ 180 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 3, 11 Southern Ironworkers Pension Plan ​ 59-6227091 001 ​ ​ ​ Green ​ ​ ​ 270 ​ 315 ​ No (8) ​ Agreement through end of Job ​ 10, 11 Tri-State Carpenters & Joiners Pension Trust Fund ​ 62-0976048 001 ​ Endangered ​ Endangered ​ Rehab Plan 2009 ​ 512 ​ 310 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 3 Washington State Plumbing & Pipefitting Industry Pension Plan ​ 91-6029141 001 ​ ​ ​ Green ​ ​ ​ 112 ​ 15 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 4, 11 Washington-Idaho Laborers-Employers Pension Trust ​ 91-6123988 001 ​ ​ ​ Green ​ ​ ​ 185 ​ 45 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 4, 11 Washington-Idaho-Montana Carpenters-Employers Retirement Fund ​ 91-6123987 001 ​ Endangered ​ Green ​ ​ ​ 376 ​ 59 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 4 IUOE Local 825 Pension Plan ​ 22-6033380 001 ​ ​ ​ Green ​ ​ ​ 242 ​ 141 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 9, 11 Massachusetts Laborers' Pension Fund ​ 04-6128298 001 ​ ​ ​ Green ​ ​ ​ 485 ​ 137 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 9, 11 IUOE Local 4 Pension Fund ​ 04-6013863 001 ​ ​ ​ Green ​ ​ ​ 311 ​ 111 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 9, 11 Local Union 400 IBEW Pension Plan ​ 22-6257847 001 ​ Green ​ Green ​ ​ ​ 229 ​ 22 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 9 Electricians Pension Plan, IBEW 995 ​ 72-6057089 001 ​ Critical ​ Critical ​ Rehab Plan 2009 ​ 131 ​ 0 ​ No (7) ​ Annual Agreements-Automatic Renewal ​ 9 Western States Insulators and Allied Workers Pension ​ 51-0155190 001 ​ Green ​ Green ​ ​ ​ 111 ​ 19 ​ No (8) ​ Annual Agreements-Automatic Renewal ​ 4 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ All Others ​ ​ ​ ​ ​ ​ ​ ​ ​ 1,559 ​ 1,120 ​ ​ ​ ​ ​ ​ Total ​ ​ ​ ​ ​ ​ ​ ​ ​ 15,842 ​ 11,811 ​ ​ ​ ​ ​ ​ ​ (1) Defined Benefit Plans for Unions employed through the GPPMA agreement for St. Lucie and Turkey Point. (2) Defined Benefit Plans for Unions employed through the Southern Company Power Maintenance & Modification Agreement. The Southern Company SCMMA expires 07/31/2026 and renews each year unless terminated. The individual Union CBA range from 1 to 3 years in duration. (3) Defined Benefit Plans for Unions employed through the TVA PMMA and Other Agreements. The TVA Labor Agreements are annual agreements that automatically renew each year. (4) Defined Benefit Plans for Unions employed through the GPPMA agreement for Columbia Generating Station. The GPPMA Agreements are annual agreements that automatically renew each year. (5) Regional and National Defined Benefit Funds for multiple unions employed under different labor agreements. (6) Defined Benefit Plan for Union employed at Con Ed sites. (7) No Surcharge required if proper Rehabilitation Plan adopted in labor agreement. (8) No Surcharge required if Plan is not in Critical or Critical & Declining Status. (9) Defined Benefit Plans for Unions employed through the GPPMA agreement for San Onofre, Oyster Creek, Pilgrim, LaSalle, Byron, Quad Cities, Peach Bottom, Limerick, Ginna, Point Beach, Waterford III, Salem/Hope Creek and DC Cook Nuclear Plants (Holtec). Also work under Decommissioning Agreement at Oyster Creek and Pilgrim (CDI). (10) Defined Benefit Plans for Unions employed through the Nuclear Power Construction Agreement. The Nuclear Power Construction Agreement is for new work at Voglte and runs through the duration of the project. (11) The status of this plan had not been issued as of the date of filing this Form 10-K. A plan in green status with a calendar year has the option to issue its Annual Funding Notice in March or April of the subsequent year .

MAJOR CUSTOMERS AND CONCENTRA_2

MAJOR CUSTOMERS AND CONCENTRATION OF CREDIT RISK (Tables)	12 Months Ended
	Dec. 31, 2021
Accounts receivable | Credit Concentration Risk
Major customers and concentration of credit risk
Schedule of customers as a percentage of consolidated amounts	​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, Customer 2021 2020 Tennessee Valley Authority ​ 18% ​ 15% ​ Bruce Power ​ 17% ​ 11% ​ Southern Nuclear Operating Company ​ 16% ​ 24% ​ Comprehensive Decommissioning International ​ 10% ​ * ​ All others ​ 39% ​ 50% ​ Total ​ 100% ​ 100% ​ ​ *Less than 10%
Revenue | Customer Concentration Risk
Major customers and concentration of credit risk
Schedule of customers as a percentage of consolidated amounts	​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, Customer 2021 ​ 2020 Southern Nuclear Operating Company 16% ​ 31% Bruce Power ​ 12% ​ 13% Tennessee Valley Authority 11% ​ 18% GUBMK ​ 11% ​ * Comprehensive Decommissioning International ​ 10% ​ * Richmond County Constructors, LLC ("RCC") ​ * ​ 11% All others 40% ​ 27% Total 100% ​ 100% ​ *Less than 10%

OTHER SUPPLEMENTAL INFORMATION

OTHER SUPPLEMENTAL INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2021
OTHER SUPPLEMENTAL INFORMATION
Schedule of other current assets	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) 2021 2020 Sales tax receivable - Canada ​ $ 4,866 ​ ​ 2,097 Unamortized commercial insurance premiums ​ ​ 2,389 ​ ​ 1,903 Prepaid expenses ​ ​ 1,136 ​ ​ 700 Letters of credit ​ ​ 883 ​ ​ 474 Cash collateral on commercial insurance claims ​ ​ 595 ​ ​ 585 Other short-term assets ​ ​ 1,180 ​ ​ 698 Total ​ $ 11,049 ​ $ 6,457
Schedule of other long-term assets	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) ​ 2021 ​ 2020 Equity method investment in RCC ​ $ 2,521 ​ $ 1,737 Right-of-use lease assets ​ ​ 1,527 ​ ​ 2,029 Other long-term assets ​ ​ 1,664 ​ ​ 1,946 Total ​ $ 5,712 ​ $ 5,712
Schedule of other current liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) 2021 2020 Accrued workers compensation ​ $ 430 ​ $ 506 Accrued taxes ​ ​ 126 ​ ​ 68 Accrued job cost ​ ​ 2,433 ​ ​ 1,081 Accrued legal and professional fees ​ ​ 113 ​ ​ 72 Sales tax payable - Canada ​ ​ 5,135 ​ ​ 2,372 Stock Compensation ​ ​ 938 ​ ​ 448 Short-term lease liability ​ ​ 1,606 ​ ​ 1,362 Other accrued liabilities ​ ​ 236 ​ ​ 1,261 Total ​ $ 11,017 ​ $ 7,170
Schedule of other long-term liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) 2021 2020 Long-term lease liability ​ ​ 511 ​ ​ 1,011 Liability for uncertain tax positions ​ ​ 1,136 ​ ​ 1,087 Total ​ $ 1,647 ​ $ 2,098
Schedule of disaggregated long-lived assets by the geographic area	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, (in thousands) 2021 2020 United States ​ $ 52,669 ​ $ 51,825 Canada ​ ​ 86 ​ ​ 206 Total ​ $ 52,755 ​ $ 52,031

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Equity method investment, ownership percentage				25.00%
Equity method investment	$ 2,521	$ 1,737
Accounts receivable, net	35,204	27,549
Cash and cash equivalents deposited with financial institutions	2,950	9,184	$ 7,818
Restricted Cash
Restricted cash	$ 468	$ 468
Minimum
Vesting period	1 year
Maximum
Product warranty term	2 years
Vesting period	4 years
U.S.
Percentage of revenue	88.10%	86.70%
Cash and cash equivalents deposited with financial institutions	$ 700
Canada
Percentage of revenue	11.90%	13.30%
Cash and cash equivalents deposited with financial institutions	$ 1,800
Collateral for Letter of Credit and Credit Card Obligations
Restricted Cash
Restricted cash	500	$ 500
Other Noncurrent Assets
Equity method investment	2,500	1,700
Equity Method Investee
Accounts receivable, net	4,600	3,900
Net income	$ 700	1,200
Dividends received		$ 1,700

LEASES (Details)

LEASES (Details) - USD ($) $ in Millions	Sep. 02, 2021	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Leases contain renewal options		true
Lease agreement term	10 years
Lease Liabilities	$ 3.5
Lease liability payment due	$ 2.3
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term		1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term		10 years

LEASES - Lease Cost (Details)

LEASES - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Components of lease expense:
Operating lease cost	$ 2,263	$ 3,679
Short-term lease cost	3,813	2,601
Sublease income	(20)
Total lease cost	$ 6,056	$ 6,280

LEASES - Right-of use Assets an

LEASES - Right-of use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
LEASES
Right-of-use assets	$ 1,527	$ 2,029
Short-term lease liabilities	1,606	1,362
Long-term lease liabilities	511	1,011
Total lease liabilities	$ 2,117	$ 2,373

LEASES - Supplemental Informati

LEASES - Supplemental Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
LEASES
Cash paid for amounts included in the measurement of lease liabilities: Operating cash used by operating leases	$ 2,433	$ 4,021
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 2,020	$ 2,290
Weighted-average remaining lease term - operating leases	1 year 4 months 9 days	1 year 9 months 18 days
Weighted-average remaining lease term - finance leases	2 years 2 months 23 days	3 years 2 months 23 days
Weighted-average discount rate - operating leases	9.00%	9.00%
Weighted-average discount rate - finance leases	9.00%	9.00%

LEASES - Remaining Lease Paymen

LEASES - Remaining Lease Payments (Details) $ in Thousands	Dec. 31, 2021USD ($)
Operating leases maturities:
2022	$ 1,701
2023	390
2024	131
2025	3
Total lease payments	2,225
Less: interest	(120)
Present value of lease liabilities	$ 2,105
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current, Other Liabilities, Noncurrent
Finance leases maturities:
2022	$ 6
2023	6
2024	1
Total lease payments	13
Less: interest	(1)
Present value of lease liabilities	$ 12
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current, Other Liabilities, Noncurrent

CHANGES IN BUSINESS - Discontin

CHANGES IN BUSINESS - Discontinued Operation and Disposition (Details) - USD ($) $ in Thousands	May 12, 2021	Dec. 31, 2021	Dec. 31, 2020	Jul. 11, 2018
Liabilities:
Current liabilities of discontinued operations		$ 316	$ 342
Long-term liabilities of discontinued operations		4,250	4,466
Income (loss) before income taxes
Interest expense, net		(5,001)	(6,083)
Income (loss) from discontinued operations before income tax		172	(405)
Income tax expense		131	40
Income (loss) from discontinued operations		41	(445)
Electrical Solutions And Mechanical Solutions
Assets and liabilities
Assets of discontinued operations		0
Discontinued operations, disposed of by means other than sale | Electrical Solutions | Pension
Liabilities:
Liability for pension obligation				$ 2,900
Decrease in liability for pension obligation	$ 300
Income (loss) before income taxes
Gain on disposal	$ 300
Discontinued operations disposed of by sale | Electrical Solutions And Mechanical Solutions
Liabilities:
Current liabilities of discontinued operations		316	342
Liability for pension obligation		2,368	2,670
Liability for uncertain tax positions		1,882	1,796
Long-term liabilities of discontinued operations		4,250	4,466
Total liabilities of discontinued operations		4,566	4,808
Income (loss) before income taxes
Gain on disposal		288
General and administrative expenses		40	197
Interest expense, net		(76)	(208)
Income (loss) from discontinued operations before income tax		172	(405)
Income tax expense		131	40
Income (loss) from discontinued operations		41	$ (445)
Discontinued operations, held-for-sale or disposed of by sale | Electrical Solutions
Income (loss) before income taxes
Gain on disposal		$ 300

PROPERTY, PLANT AND EQUIPMENT_2

PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment
Capital lease assets	$ 21	$ 27
Property, plant and equipment, gross	13,874	13,453
Less accumulated depreciation	(13,221)	(13,144)
Property, plant and equipment, net	653	309
Buildings and improvements
Property, Plant and Equipment
Property, plant and equipment, gross	$ 495	495
Buildings and improvements | Minimum
Property, Plant and Equipment
Estimated Useful Lives	5 years
Buildings and improvements | Maximum
Property, Plant and Equipment
Estimated Useful Lives	39 years
Machinery and equipment
Property, Plant and Equipment
Property, plant and equipment, gross	$ 4,663	4,236
Machinery and equipment | Minimum
Property, Plant and Equipment
Estimated Useful Lives	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment
Estimated Useful Lives	12 years
Furniture and fixtures
Property, Plant and Equipment
Property, plant and equipment, gross	$ 8,695	$ 8,695
Furniture and fixtures | Minimum
Property, Plant and Equipment
Estimated Useful Lives	2 years
Furniture and fixtures | Maximum
Property, Plant and Equipment
Estimated Useful Lives	10 years
Capital Lease Assets
Property, Plant and Equipment
Estimated Useful Lives	5 years

PROPERTY, PLANT AND EQUIPMENT -

PROPERTY, PLANT AND EQUIPMENT - Depreciation and Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
PROPERTY, PLANT AND EQUIPMENT
Depreciation expense	$ 200	$ 200
Impairment charges	$ 0	$ 0

GOODWILL AND OTHER INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLE ASSETS - Future Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill impairment	$ 0	$ 0
Trade Names
Indefinite lived intangible assets	12,500	12,500
Indefinite-Lived Intangible Assets (Excluding Goodwill)
Impairment of intangible assets	$ 0	$ 0

INCOME TAXES (Details)

INCOME TAXES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income before income taxes
Domestic	$ (19)	$ (1,130)
Foreign	3,514	4,498
Income from continuing operations before income tax expense	3,495	3,368
Income (loss) from discontinued operations	172	(405)
Income before income tax expense	$ 3,667	$ 2,963

INCOME TAXES - Expense by Juris

INCOME TAXES - Expense by Jurisdiction Table 2 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Current:
Foreign	$ 922	$ 1,183
Total current	922	1,183
Deferred:
Federal	(69)	92
State	(192)	149
Foreign	263	1
Total deferred	2	242
Income tax expense (benefit)	$ 924	$ 1,425

INCOME TAXES - Continuing and D

INCOME TAXES - Continuing and Discontinued Operations Table 3 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
INCOME TAXES
Continuing operations	$ 793	$ 1,385
Discontinued Operations	131	40
Income tax expense (benefit)	$ 924	$ 1,425

INCOME TAXES - Effective Tax Ra

INCOME TAXES - Effective Tax Rate Reconciliation Table 4 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Amount
Tax expense (benefit) computed at the maximum U.S. statutory rate, amount	$ 734	$ 707
Difference resulting from state income taxes, net of federal income tax benefits, amount	151	646
State tax rate difference	(211)	(273)
Non-deductible expenses, other, amount	125	103
APB 23 DTL	264
Change in net operating loss carryforward, amount	(42)	(1,116)
Change in valuation allowance, amount	(660)	914
Change in foreign tax credits, amount	359	641
Bankruptcy reorganization costs		(3)
Other, net, amount	73	(234)
Total tax expense	$ 793	$ 1,385
Effective Income Tax Rate Reconciliation, Percent
Tax expense (benefit) computed at the maximum U.S. statutory rate, as a percent	21.00%	21.00%	21.00%	35.00%
Difference resulting from state income taxes, net of federal income tax benefits, percentage	4.30%	19.20%
State tax rate difference, percentage	(6.00%)	(8.10%)
Non-deductible expenses, other, percentage	3.60%	3.00%
APB 23 DTL, percentage	7.60%
Change in net operating loss carryforward, percentage	(1.20%)	(33.10%)
Change in valuation allowance, percentage	(18.90%)	27.10%
Change in foreign tax credits, percentage	10.30%	19.00%
Bankruptcy reorganization costs, percentage		(0.10%)
Other, net, percentage	2.10%	(6.90%)
Total tax expense, percentage	22.80%	41.10%

INCOME TAXES - Deferred Income

INCOME TAXES - Deferred Income Tax Assets and Liabilities Table 5 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets:
Cost in excess of identifiable net assets of business acquired	$ 4,437	$ 5,111
Reserves and other accruals	3,822	3,767
Tax credit carryforwards	5,754	6,440
Accrued compensation and benefits	2,077	3,577
State net operating loss carryforwards	13,493	12,465
Federal net operating loss carryforwards	47,653	46,572
Gain/loss on assets held for sale	1,457	1,434
Other	6,438	5,633
Total	85,131	84,999
Liabilities:
Indefinite life intangibles	(12,445)	(12,255)
Property and equipment	(473)	(407)
Net deferred tax assets	72,213	72,337
Valuation allowance for net deferred tax assets	(74,655)	(74,777)
Net deferred tax liability after valuation allowance	$ (2,442)	$ (2,440)
Statutory tax rate (as a percent)	21.00%	21.00%	21.00%	35.00%
Increase in valuation allowance	$ 100
Amount of future financial taxable income needed to realize deferred tax assets	$ 292,300

INCOME TAXES - NOL and Tax Cred

INCOME TAXES - NOL and Tax Credit Carryforwards (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)
Operating Loss Carryforwards
Percentage of post 2017 NOLs, deductible	80.00%
Federal.
Operating Loss Carryforwards
Operating loss carryforwards	$ 225.9
Federal. | Minimum
Operating Loss Carryforwards
Expiration date	Dec. 31, 2025
Federal. | Maximum
Operating Loss Carryforwards
Expiration date	Dec. 31, 2037
State
Operating Loss Carryforwards
Operating loss carryforwards	$ 270.8
State | Minimum
Operating Loss Carryforwards
Expiration date	Dec. 31, 2021
State | Maximum
Operating Loss Carryforwards
Expiration date	Dec. 31, 2041
Foreign
Operating Loss Carryforwards
Operating loss carryforwards	$ 5.2
Expiration date	Dec. 31, 2027
Tax credit carryforward	$ 4.1
Foreign | Minimum
Operating Loss Carryforwards
Expiration date	Dec. 31, 2021
Foreign | Maximum
Operating Loss Carryforwards
Expiration date	Dec. 31, 2031

INCOME TAXES - Valuation Allowa

INCOME TAXES - Valuation Allowances and Unremitted Earnings Narrative (Details) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2021CAD ($)
Valuation Allowance
Deferred income tax liabilities related to indefinite-lived intangibles	$ 12,445	$ 12,255
Income Tax Expense (Benefit)	793	1,385
Valuation allowance for net deferred tax assets	(74,655)	$ (74,777)
Undistributed earnings of the foreign subsidiaries			$ 7
Canada.
Valuation Allowance
Income Tax Expense (Benefit)	800
Deferred tax liability, undistributed foreign earnings	$ 300
United States-Canada treaty rate	5.00%

INCOME TAXES - Uncertain Tax Po

INCOME TAXES - Uncertain Tax Positions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of the total amounts of unrecognized tax benefits
Unrecognized tax benefits at January 1	$ 2,861	$ 2,898
Reductions to unrecognized tax benefits from lapse of statutes of limitations	(14)	(37)
Unrecognized tax benefits at December 31	2,847	2,861
Unrecognized tax benefits that would affect the effective tax rate	400	400
Maximum uncertain tax positions expected to lapse in 2022	100
Interest and penalties related to uncertain income tax positions	1,500	1,300
Deferred federal employer payroll taxes, coronavirus aid, relief and economic security act	4,900
Continuing Operations
Reconciliation of the total amounts of unrecognized tax benefits
Unrecognized tax benefits at January 1	1,897
Unrecognized tax benefits at December 31	1,883	1,897
Discontinued Operations
Reconciliation of the total amounts of unrecognized tax benefits
Unrecognized tax benefits at January 1	964
Unrecognized tax benefits at December 31	$ 964	$ 964
The Netherlands
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2018
Minimum | Federal
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2006
Minimum | Mexico.
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2016
Minimum | Canada.
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2019
Minimum | China
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2013
Maximum | China
Reconciliation of the total amounts of unrecognized tax benefits
Open tax years for examination	2017

REVENUE - Disaggregation of rev

REVENUE - Disaggregation of revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of revenue
Revenue	$ 304,946	$ 269,051
U.S.
Disaggregation of revenue
Revenue	268,726	233,297
Canada
Disaggregation of revenue
Revenue	36,220	35,754
Cost-plus reimbursement contracts
Disaggregation of revenue
Revenue	258,823	238,529
Fixed-price contracts
Disaggregation of revenue
Revenue	$ 46,123	$ 30,522

REVENUE - Contract assets and t

REVENUE - Contract assets and the contract liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Changes in the contract assets and the contract liabilities
Costs incurred on uncompleted contracts	$ 273,520	$ 235,035
Earnings recognized on uncompleted contracts	31,426	34,016
Uncompleted Contracts Cost Incurred And Earnings Recognized	304,946	269,051
Less - billings to date	(295,675)	(263,611)
Net	9,271	5,440
Contract assets	12,683	7,969
Contract liabilities	(3,412)	$ (2,529)
Revenue recognized from contracts in progress liability balance at December 31, 2020	2,500
Revenue recognized from contracts in progress liability balance at December 31, 2020	$ 2,200

REVENUE - Remaining Performance

REVENUE - Remaining Performance Obligations (Details) $ in Thousands	Dec. 31, 2021USD ($)
Transaction price allocated to the remaining performance obligations
Nuclear Decommissioning, Backlog Excluding Lost Contracts	$ 270,700
Remaining performance obligation	270,724
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Transaction price allocated to the remaining performance obligations
Remaining performance obligation	$ 157,205
Expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Transaction price allocated to the remaining performance obligations
Remaining performance obligation	$ 47,454
Expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Transaction price allocated to the remaining performance obligations
Remaining performance obligation	$ 66,065
Expected timing of satisfaction	1 year
Cost-plus reimbursement contracts
Transaction price allocated to the remaining performance obligations
Remaining performance obligation	$ 198,448
Cost-plus reimbursement contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Transaction price allocated to the remaining performance obligations
Remaining performance obligation	88,877
Cost-plus reimbursement contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Transaction price allocated to the remaining performance obligations
Remaining performance obligation	43,506
Cost-plus reimbursement contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Transaction price allocated to the remaining performance obligations
Remaining performance obligation	66,065
Fixed-price contracts
Transaction price allocated to the remaining performance obligations
Remaining performance obligation	72,276
Fixed-price contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Transaction price allocated to the remaining performance obligations
Remaining performance obligation	68,328
Fixed-price contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Transaction price allocated to the remaining performance obligations
Remaining performance obligation	$ 3,948

DEBT (Details)

DEBT (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 16, 2020
Debt
Loss on extinguishment of debt			$ 1,455,000
Current portion of term loan		$ 1,050,000	1,050,000
Current debt		1,726,000
Unamortized debt discount from refinancing to new loan		200,000
Unamortized deferred financing fees		(4,081,000)	(5,112,000)
Long-term debt, net		30,328,000	30,728,000
Total debt, net		32,054,000
Amounts drawn upon letters of credit		0
Cash collateral for letters of credit		1,500,000	600,000
Amortization of deferred financing costs		831,000	1,536,000
Amortization of deferred financing costs excluding those costs written off upon extinguishment of debt.		$ 1,031,000	762,000
If Total Leverage Ratio is Greater Than 3.00
Debt
Interest rate if required threshold leverage ratio is maintained		50.00%
If Total Leverage Ratio is Equal to or Less Than 3.00 and Greater Than 2.00
Debt
Interest rate if required threshold leverage ratio is maintained		25.00%
Minimum | If Total Leverage Ratio is Equal to or Less Than 3.00 and Greater Than 2.00
Debt
Threshold total leverage ratio under debt instrument		3
Maximum | If Total Leverage Ratio is Equal to or Less Than 3.00 and Greater Than 2.00
Debt
Threshold total leverage ratio under debt instrument		2
Long-term debt, net
Debt
Unamortized debt discount from refinancing to new loan		$ 791,000	991,000
Midcap Financial Trust Agent Member And New Center Lane
Debt
Outstanding borrowings		0	0
Penalties relating to prepayment of debt		700,000
New Centre Lane Facility
Debt
Non-cash deferred interest costs		$ 800,000
Previous Credit Facility
Debt
Loss on extinguishment of debt			1,400,000
Term Loan Facility
Debt
Loss on extinguishment of debt			1,500,000
Default spread on interest rate (as a percent)		2.00%
Threshold excess cash flow		$ 500,000
Term Loan Facility | First Anniversary of Closing Date
Debt
Prepayment premium, percentage		3.00%
Term Loan Facility | Second Anniversary of Closing Date
Debt
Prepayment premium, percentage		2.00%
Term Loan Facility | Third Anniversary of Closing Date
Debt
Prepayment premium, percentage		1.00%
Term Loan Facility | Minimum
Debt
Outstanding principal that can be prepaid in whole or in part		$ 1,000,000
Revolving Credit Facility
Debt
Current debt			1,402,000
Unamortized debt discount from refinancing to new loan			(991,000)
Long-term debt, net			30,728,000
Total debt, net			32,130,000
Cash collateral for letters of credit		400,000
Amortization of deferred financing costs		381,000	304,000
Revolving Credit Facility | Minimum
Debt
Required minimum prepayment amount		0
Secured Asset Based Revolving Credit Facility | Other Noncurrent Assets
Debt
Unamortized deferred financing fees			(1,890,000)
First Out Term Loan | Term Loan Facility
Debt
Amortization of deferred financing costs		800,000
Term loan
Debt
Maximum borrowing capacity				$ 50,000,000
Term loan		32,900,000
Current portion of term loan		1,050,000
Unamortized deferred financing fees		(1,781,000)
Total debt, net		$ 34,000,000
Interest rate on letters of credit issued under the revolving letter of credit sublimit		9.50%
Amortization of deferred financing costs excluding those costs written off upon extinguishment of debt.		$ 450,000
Current interest rate (as a percent)		9.00%
Interest rate if required threshold leverage ratio is maintained		8.50%
Scheduled maturities of the New Centre Lane Facility
Term Loan Maturities		$ 32,900,000
Term loan | Minimum
Debt
Threshold total leverage ratio under debt instrument		2.50
Term loan | Minimum | If Total Leverage Ratio is Greater Than 3.00
Debt
Threshold total leverage ratio under debt instrument		3
Term loan | Maximum
Debt
Number of days within which obligations must be prepaid subject to thresholds (in days)	120 days
Threshold total leverage ratio under debt instrument		2.50
Default spread on interest rate (as a percent)		250.00%
Term loan | Long-term debt, net
Debt
Unamortized deferred financing fees		$ (1,781,000)
Term loan | Base Rate loans
Debt
Interest rate percentage (as a percent)		9.00%
Term loan | LIBOR-based loans
Debt
Interest rate percentage (as a percent)		8.50%
Term loan | LIBOR-based loans | Minimum
Debt
Interest rate if required threshold leverage ratio is maintained		1.00%
Floor rate (as a percent)		1.00%
Term loan | Revolving Credit Facility
Debt
Unamortized debt discount from refinancing to new loan		$ (791,000)
Closing Date Term Loan
Debt
Maximum borrowing capacity				35,000,000
Term loan		33,950,000
Scheduled maturities of the New Centre Lane Facility
2022		1,050,000
2023		1,050,000
2024		1,050,000
2025		30,800,000
Term Loan Maturities		33,950,000
Delayed Draw Term Loan Facility
Debt
Maximum borrowing capacity				15,000,000
Senior Secured Asset-Based Revolving Line Of Credit
Debt
Current debt		700,000
Swing Loan Member
Debt
Maximum borrowing capacity		3,000,000
Letters of credit
Debt
Maximum borrowing capacity		2,000,000
Canadian Dollar Loans
Debt
Maximum borrowing capacity		5,000,000
Revolving Credit Facility
Debt
Outstanding borrowings		500,000
Revolving Credit Facility.
Debt
Maximum borrowing capacity				$ 30,000,000
Current debt		$ 676,000
Floor rate (as a percent)		1.00%
Closing fee under the line of credit facility		$ 200,000
Unused line fee (as a percent)		0.25%
Collateral monitoring fee		$ 2,500
Early termination fee		2.00%
Revolving Credit Facility. | If Early Termination Occurs on or Prior to First Anniversary of Closing Date
Debt
Early termination fee		1.00%
Revolving Credit Facility. | If Early Termination Occurs After First Anniversary of Closing Date
Debt
Fronting fee		0.25%
Revolving Credit Facility. | Other Noncurrent Assets
Debt
Unamortized deferred financing fees		$ (1,509,000)
Revolving Credit Facility. | Base Rate loans
Debt
Interest rate percentage (as a percent)		1.25%
Revolving Credit Facility. | LIBOR-based loans
Debt
Interest rate percentage (as a percent)		2.25%
Revolving Credit Facility. | Canadian Dollar Offered Rate
Debt
Floor rate (as a percent)		1.00%
Default spread on interest rate (as a percent)		2.00%
New Centre Lane Facility
Debt
Amortization of deferred financing costs			458,000
New Centre Lane Facility | Long-term debt, net
Debt
Unamortized deferred financing fees			(2,231,000)
New Centre Lane Facility | Revolving Credit Facility
Debt
Term loan			33,950,000
Current portion of term loan			1,050,000
Unamortized deferred financing fees			(2,231,000)
Scheduled maturities of the New Centre Lane Facility
Term Loan Maturities			33,950,000
Midcap Financial Trust | Secured Asset Based Revolving Credit Facility
Debt
Current debt			352,000
Payment Surety Bond
Debt
Outstanding surety bond		$ 67,600,000
Performance Bond
Debt
Outstanding surety bond			$ 31,000,000

EARNINGS PER SHARE (Details)

EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
EARNINGS PER SHARE
Common stock, shares outstanding		25,939,621	25,336,442
Proceeds from Issuance of Common Stock			$ 6,489
Net income (basic and diluted):
Income from continuing operations		$ 2,702	$ 1,983
Basic earnings per common share:
Weighted average common shares outstanding		25,506,748	23,676,458
Basic earnings per common share		$ 0.11	$ 0.08
Diluted earnings per common share:
Weighted average common shares outstanding		25,506,748	23,676,458
Diluted effect:
Unvested portion of restricted stock units and awards		630,896	541,539
Weighted average diluted common shares outstanding		26,137,644	24,217,997
Diluted earnings per common share		$ 0.10	$ 0.08
Rights offering
Value of shares issued in backstopped rights offering	$ 7,000
EARNINGS PER SHARE
Stock Issued During Period, Shares, New Issues	5,384,615
Proceeds from Issuance of Common Stock	$ 6,500
Restricted Stock
EARNINGS PER SHARE
Unvested restricted stock included in reportable shares		215,956	550,857
Restricted Stock | Service vesting
EARNINGS PER SHARE
Unvested restricted stock included in reportable shares		885,800	1,409,415

EARNINGS PER SHARE - Antidiluti

EARNINGS PER SHARE - Antidilutive (Details) - Restricted Stock - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Service vesting
Anti-dilutive shares		354,257
Performance And Market Vesting
Anti-dilutive shares	765,857	1,628,606

STOCK-BASED COMPENSATION (Detai

STOCK-BASED COMPENSATION (Details) $ / shares in Units, $ in Millions

Mar. 06, 2021USD ($)

Mar. 05, 2021USD ($)shares

Mar. 04, 2021

Mar. 13, 2020$ / sharesshares

May 31, 2021USD ($)

Mar. 31, 2021USD ($)shares

Dec. 31, 2022itemshares

Dec. 31, 2021USD ($)planitemdirector$ / sharesshares

Dec. 31, 2020USD ($)$ / shares

Dec. 31, 2019USD ($)

Mar. 31, 2020$ / shares

May 31, 2015shares

Stock-based compensation

Number of equity incentive plans | plan

1

Related excess tax benefit | $

$ 0

$ 0

Shares granted ,value | $

$ 1.1

Share-based Compensation Arrangement by Share-based Payment Award, Performance Goals, Growth Rate

25.00%

Term

3 years

2 years

3 years

Fair value granted | $

$ 3.8

Cumulative effect of compensation expense reversal | $

$ 1.5

Other long-term liabilities

Stock-based compensation

Cumulative effect of compensation expense reversal | $

$ 2.2

Restricted Stock

Stock-based compensation

Unrecognized compensation expense related to unvested restricted stock award | $

$ 4.1

Weighted average recognized period

1 year 8 months 12 days

Fair value of share vested | $

$ 2.3

$ 0.8

Weighted average grant date fair value | $ / shares

$ 3.27

$ 1.98

Restricted Stock | Service vesting

Stock-based compensation

Granted (in shares)

551,173

Vested (in shares)

907,593

Weighted average grant date fair value | $ / shares

$ 1.37

2.41

Number of forfeited shares

167,195

Performance-Based Shares

Stock-based compensation

Granted (in shares)

33,334

Vested (in shares)

0

500,000

1,200,000

Stock-based compensation expense | $

$ 0

$ 0.6

Vesting period

24 months

2 years

Performance-Based Shares | Threshold Performance Vesting [Member]

Stock-based compensation

Award payout range

50

Performance-Based Shares | Target Performance Vesting [Member]

Stock-based compensation

Award payout range

100

Performance-Based Shares | Maximum Performance Vesting [Member]

Stock-based compensation

Award payout range

200

2015 Plan | Restricted Stock

Stock-based compensation

Stock based award, number of shares authorized for issuance

3,500,000

Stock based award, number of shares available for future award

1,298,219

Granted (in shares)

1,833,465

2015 Plan | Restricted Stock | Service vesting

Stock-based compensation

Granted (in shares)

513,673

Weighted average grant date fair value | $ / shares

$ 5

2015 Plan | Performance-Based Shares

Stock-based compensation

Granted (in shares)

70,834

Vested (in shares)

180,078

Weighted average grant date fair value | $ / shares

$ 3.68

$ 2.35

Number of forfeited shares

225,671

Initial value | $

$ 2.2

Modified (in shares)

1,098,362

2015 Plan | Performance-Based Shares | Market-based vesting

Stock-based compensation

Weighted average grant date fair value | $ / shares

$ 1.73

Number of forfeited shares

80,034

Modified (in shares)

449,559

2015 Plan | Performance-Based Shares | Performance Vesting

Stock-based compensation

Vesting period

3 years

2015 Plan | Cash-based Awards

Stock-based compensation

Percentage of share based payment awards allocated for each year

33.33%

33.33%

33.33%

Fair value granted | $

$ 1.7

Liability | $

$ 0.1

Grant Modification 2016

Stock-based compensation

Granted (in shares)

137,000

Total number of participants in modifications of stock-grant | item

7

Grant Modification 2017

Stock-based compensation

Granted (in shares)

51,096

Total number of participants in modifications of stock-grant | item

11

Grant Modification 2018

Stock-based compensation

Granted (in shares)

201,173

261,463

Total number of participants in modifications of stock-grant | item

14

20

Number of participants forfeiting grants under stock modification program | item

6

Number of forfeited shares

60,290

2021 long-term incentive program and 2015 plan | Restricted Stock | Performance Vesting

Stock-based compensation

Annual Performance Objective Term

3 years

2020 long-term incentive program and 2015 plan | Restricted Stock | Performance Vesting

Stock-based compensation

Annual Performance Objective Term

2 years

Modification to 2020 Long-term Incentive Program | Restricted Stock

Stock-based compensation

Award payout range

0.33

Modification to 2020 Long-term Incentive Program | Restricted Stock | Performance Vesting

Stock-based compensation

Annual Performance Objective Term

3 years

Modification to 2020 Long-term Incentive Program | Performance-Based Shares

Stock-based compensation

Award payout range

0.66

Outside of 2015 Plan | Restricted Stock

Stock-based compensation

Granted (in shares)

336,463

Outside of 2015 Plan | Restricted Stock | Service vesting

Stock-based compensation

Granted (in shares)

37,500

Outside of 2015 Plan | Performance-Based Shares

Stock-based compensation

Granted (in shares)

37,500

General and administrative expenses

Stock-based compensation

Stock-based compensation expense | $

$ 3

$ 2.5

General and administrative expenses | Other current liabilities

Stock-based compensation

Cumulative effect of compensation expense reversal | $

0.4

General and administrative expenses | Service vesting

Stock-based compensation

Stock-based compensation expense | $

0.5

General and administrative expenses | Performance-Based Shares

Stock-based compensation

Stock-based compensation expense | $

0.3

General and administrative expenses | 2015 Plan | Cash-based Awards

Stock-based compensation

Stock-based compensation expense | $

$ 0.3

Certain Employees | 2015 Plan | Restricted Stock | Service vesting

Stock-based compensation

Granted (in shares)

307,619

Weighted average recognized period

3 years

Weighted average grant date fair value | $ / shares

$ 3.48

Certain Employees | Grant Date Fair Value One | Restricted Stock | Service vesting

Stock-based compensation

Granted (in shares)

41,666

Weighted average grant date fair value | $ / shares

$ 6.27

Certain Employees | Grant Date Fair Value Two | Restricted Stock | Service vesting

Stock-based compensation

Granted (in shares)

25,000

Director | 2015 Plan | Restricted Stock | Service vesting

Stock-based compensation

Granted (in shares)

164,388

Weighted average recognized period

1 year

Weighted average grant date fair value | $ / shares

$ 3.39

Number of non-employee directors vested with service-based restricted stock awards | director

6

STOCK-BASED COMPENSATION - Acti

STOCK-BASED COMPENSATION - Activity (Details) - USD ($)	Mar. 05, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Fair Value Assumptions
Reduction in stock compensation expense				$ 300,000
Incremental costs				$ 800,000
Incremental costs beign expensed term				21 months
Share Price	$ 3.49
2015 Plan
Fair Value Assumptions
Share Price				$ 6
2016 Plan
Fair Value Assumptions
Share Price				$ 5.50
Grant Modification 2016
Number of Shares
Granted (in shares)				137,000
Fair Value Assumptions
Expected term (years)				1 year 9 months 25 days
Expected volatility				57.60%
Expected dividend yield				0.00%
Risk-free interest rate				0.13%
Weighted-average grant date fair value				$ 1.87
Share Price				$ 5
Grant Modification 2017
Number of Shares
Granted (in shares)				51,096
Fair Value Assumptions
Expected term (years)				1 year 9 months 25 days
Expected volatility				57.60%
Expected dividend yield				0.00%
Risk-free interest rate				0.13%
Weighted-average grant date fair value				$ 1.65
Grant Modification 2018
Number of Shares
Granted (in shares)			201,173	261,463
Forfeited (in shares)			(60,290)
Fair Value Assumptions
Expected term (years)				1 year 9 months 25 days
Expected volatility				57.60%
Expected dividend yield				0.00%
Risk-free interest rate				0.13%
Weighted-average grant date fair value				$ 2.11
Restricted Stock
Number of Shares
Unvested restricted stock and restricted stock units at the beginning of the period (in shares)			215,956	550,857
Unvested restricted stock and restricted stock units at the end of the period (in shares)				215,956
Weighted-Average Grant Date Fair Value per Share
Unvested restricted stock at the beginning of the period (in dollars per share)			$ 3.27	$ 1.98
Unvested restricted stock at the end of the period (in dollars per share)				$ 3.27
Restricted Stock | Service vesting
Number of Shares
Unvested restricted stock and restricted stock units at the beginning of the period (in shares)			885,800	1,409,415
Granted (in shares)				551,173
Vesting (in shares)				(907,593)
Forfeited (in shares)				(167,195)
Unvested restricted stock and restricted stock units at the end of the period (in shares)				885,800
Weighted-Average Grant Date Fair Value per Share
Unvested restricted stock at the beginning of the period (in dollars per share)			$ 1.37	$ 2.41
Granted (in dollars per share)				3.77
Vested (in dollars per share)				1.86
Forfeited (in dollars per share)				1.37
Unvested restricted stock at the end of the period (in dollars per share)				$ 1.37
Restricted Stock | 2015 Plan
Number of Shares
Granted (in shares)				1,833,465
Restricted Stock | 2015 Plan | Service vesting
Number of Shares
Granted (in shares)				513,673
Weighted-Average Grant Date Fair Value per Share
Unvested restricted stock at the beginning of the period (in dollars per share)			$ 5
Unvested restricted stock at the end of the period (in dollars per share)				$ 5
Performance-Based Shares
Number of Shares
Granted (in shares)				33,334
Vesting (in shares)	0	(500,000)		(1,200,000)
Fair Value Assumptions
Vesting period	24 months			2 years
Performance-Based Shares | 2015 Plan
Number of Shares
Unvested restricted stock and restricted stock units at the beginning of the period (in shares)			547,133	882,048
Granted (in shares)				70,834
Vesting (in shares)				(180,078)
Modified (in shares)				1,098,362
Canceled (in shares)				(1,098,362)
Forfeited (in shares)				(225,671)
Unvested restricted stock and restricted stock units at the end of the period (in shares)				547,133
Weighted-Average Grant Date Fair Value per Share
Unvested restricted stock at the beginning of the period (in dollars per share)			$ 3.68	$ 2.35
Granted (in dollars per share)				5.60
Vested (in dollars per share)				$ 3.21
Modified (in dollars per share)				$ 3.49
Canceled (in dollars per share)				$ 1.22
Forfeited (in dollars per share)				7.35
Unvested restricted stock at the end of the period (in dollars per share)				$ 3.68
Performance-Based Shares | 2015 Plan | Market-based vesting
Number of Shares
Unvested restricted stock and restricted stock units at the beginning of the period (in shares)			369,525
Modified (in shares)				449,559
Forfeited (in shares)				(80,034)
Unvested restricted stock and restricted stock units at the end of the period (in shares)				369,525
Weighted-Average Grant Date Fair Value per Share
Unvested restricted stock at the beginning of the period (in dollars per share)			$ 1.73
Modified (in dollars per share)				$ 1.74
Forfeited (in dollars per share)				$ 1.77
Unvested restricted stock at the end of the period (in dollars per share)				$ 1.73
Performance-Based Shares | 2015 Plan | Performance Vesting
Fair Value Assumptions
Vesting period				3 years

EMPLOYEE BENEFIT PLANS (Details

EMPLOYEE BENEFIT PLANS (Details)	12 Months Ended
	Dec. 31, 2021USD ($)item	Dec. 31, 2020USD ($)
Defined Contribution Plan
Defined Contribution Plan 401(k)	$ 900,000	$ 300,000
Multiemployer Pension Plans
Number of multiemployer pension plans | item	92
Maximum amount of lump sum distributions when fund is in critical state	$ 5,000
Green zone plans, minimum funded status, as a percent	80.00%
Minimum
Multiemployer Pension Plans
Number of union multiemployer pension plans | item	150
Threshold contribution for multiemployer pension plan determined to be individually significant	$ 100,000
Individual union collective bargaining agreement period	1 year
Maximum
Multiemployer Pension Plans
Individual union collective bargaining agreement period	3 years

EMPLOYEE BENEFIT PLANS - Employ

EMPLOYEE BENEFIT PLANS - Employer plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Participation in the multiemployer pension plans
Multiemployer Plans, Certified Zone Status		Other
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 15,842	$ 11,811
Boilermaker-Blacksmith National Pension Trust
Participation in the multiemployer pension plans
EIN/Pension Plan Number	486168020
Multiemployer Plans, Certified Zone Status	Other	Other
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	Implemented
Contributions by the company	$ 4,263	$ 2,622
Multiemployer Plans, Surcharge	No
Central Pension Fund of the IUOE and Participating Employers
Participation in the multiemployer pension plans
EIN/Pension Plan Number	366052390
Multiemployer Plans, Certified Zone Status	Green	Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 366	$ 336
Multiemployer Plans, Surcharge	No
Central States, Southeast, and Southwest Pension Fund
Participation in the multiemployer pension plans
EIN/Pension Plan Number	366044243
Multiemployer Plans, Certified Zone Status	Other	Other
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	Implemented
Contributions by the company	$ 103	$ 74
Multiemployer Plans, Surcharge	No
Excavators Union Local 731 Pension Fund
Participation in the multiemployer pension plans
EIN/Pension Plan Number	131809825
Multiemployer Plans, Certified Zone Status	Other	Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 523	$ 441
Multiemployer Plans, Surcharge	No
IBEW Local 1579 Pension Plan
Participation in the multiemployer pension plans
EIN/Pension Plan Number	581254974
Multiemployer Plans, Certified Zone Status	Green	Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 1,239	$ 774
Multiemployer Plans, Surcharge	No
Iron Workers District Council of Tennessee Valley & Vicinity Pension Plan
Participation in the multiemployer pension plans
EIN/Pension Plan Number	626098036
Multiemployer Plans, Certified Zone Status		Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 316	$ 185
Multiemployer Plans, Surcharge	No
IUPAT Industry Pension Plan
Participation in the multiemployer pension plans
EIN/Pension Plan Number	526073909
Multiemployer Plans, Certified Zone Status	Other	Other
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	Implemented
Contributions by the company	$ 184	$ 2,327
Multiemployer Plans, Surcharge	No
Laborers National Pension Fund
Participation in the multiemployer pension plans
EIN/Pension Plan Number	751280827
Multiemployer Plans, Certified Zone Status	Other	Other
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	Implemented
Contributions by the company	$ 417	$ 225
Multiemployer Plans, Surcharge	No
National Asbestos Workers Pension Plan
Participation in the multiemployer pension plans
EIN/Pension Plan Number	526038497
Multiemployer Plans, Certified Zone Status	Other	Other
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	Implemented
Contributions by the company	$ 1,258	$ 1,165
Multiemployer Plans, Surcharge	No
National Electrical Benefits Fund
Participation in the multiemployer pension plans
EIN/Pension Plan Number	530181657
Multiemployer Plans, Certified Zone Status	Green	Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 578	$ 354
Multiemployer Plans, Surcharge	No
New Jersey Building Laborers Statewide Pension Fund
Participation in the multiemployer pension plans
EIN/Pension Plan Number	226077693
Multiemployer Plans, Certified Zone Status	Other	Other
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	Implemented
Contributions by the company	$ 1,340	$ 616
Multiemployer Plans, Surcharge	No
United Association National Pension Fund
Participation in the multiemployer pension plans
EIN/Pension Plan Number	526152779
Multiemployer Plans, Certified Zone Status	Other	Other
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	Implemented
Contributions by the company	$ 315	$ 201
Multiemployer Plans, Surcharge	No
Laborers Local 235 Pension Fund
Participation in the multiemployer pension plans
EIN/Pension Plan Number	136186984
Multiemployer Plans, Certified Zone Status	Other	Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 152	$ 17
Multiemployer Plans, Surcharge	No
Plumber and Steamfitters Local Union No. 43 Pension Fund
Participation in the multiemployer pension plans
EIN/Pension Plan Number	626101288
Multiemployer Plans, Certified Zone Status		Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 265	$ 180
Multiemployer Plans, Surcharge	No
Southern Ironworkers Pension Plan
Participation in the multiemployer pension plans
EIN/Pension Plan Number	596227091
Multiemployer Plans, Certified Zone Status		Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 270	$ 315
Multiemployer Plans, Surcharge	No
Tri-State Carpenters & Joiners Pension Trust Fund
Participation in the multiemployer pension plans
EIN/Pension Plan Number	620976048
Multiemployer Plans, Certified Zone Status	Other	Other
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	Implemented
Contributions by the company	$ 512	$ 310
Multiemployer Plans, Surcharge	No
Washington State Plumbing and Pipefitting Industry Pension Plan
Participation in the multiemployer pension plans
EIN/Pension Plan Number	916029141
Multiemployer Plans, Certified Zone Status		Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 112	$ 15
Multiemployer Plans, Surcharge	No
Washington-Idaho Laborers-Employers Pension Trust
Participation in the multiemployer pension plans
EIN/Pension Plan Number	916123988
Multiemployer Plans, Certified Zone Status		Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 185	$ 45
Multiemployer Plans, Surcharge	No
Washington-Idaho-Montana Carpenters-Employers Retirement Fund
Participation in the multiemployer pension plans
EIN/Pension Plan Number	916123987
Multiemployer Plans, Certified Zone Status	Other	Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 376	$ 59
Multiemployer Plans, Surcharge	No
IUOE Local 825 Pension Plan
Participation in the multiemployer pension plans
EIN/Pension Plan Number	226033380
Multiemployer Plans, Certified Zone Status		Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 242	$ 141
Multiemployer Plans, Surcharge	No
Massachusetts Laborers' Pension Fund
Participation in the multiemployer pension plans
EIN/Pension Plan Number	046128298
Multiemployer Plans, Certified Zone Status		Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 485	$ 137
Multiemployer Plans, Surcharge	No
IUOE Local 4 Pension Fund
Participation in the multiemployer pension plans
EIN/Pension Plan Number	046013863
Multiemployer Plans, Certified Zone Status		Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 311	$ 111
Multiemployer Plans, Surcharge	No
IBEW Local Union No. 400 Pension Fund
Participation in the multiemployer pension plans
EIN/Pension Plan Number	226257847
Multiemployer Plans, Certified Zone Status	Green	Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 229	$ 22
Multiemployer Plans, Surcharge	No
Electricians Pension Plan, IBEW 995
Participation in the multiemployer pension plans
EIN/Pension Plan Number	726057089
Multiemployer Plans, Certified Zone Status	Other	Other
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	Implemented
Contributions by the company	$ 131	$ 0
Multiemployer Plans, Surcharge	No
Western States Insulators and Allied Workers Pension
Participation in the multiemployer pension plans
EIN/Pension Plan Number	510155190
Multiemployer Plans, Certified Zone Status	Green	Green
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	No
Contributions by the company	$ 111	$ 19
Multiemployer Plans, Surcharge	No
All Others.
Participation in the multiemployer pension plans
Contributions by the company	$ 1,559	$ 1,120

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
COMMITMENTS AND CONTINGENCIES
Employee severance benefits	$ 5.4
Health and general insurance expenses	2	$ 2.4
Self-insured risk retention accrual	0.9	0.5
Cash collateral for letters of credit	$ 1.5	$ 0.6

MAJOR CUSTOMERS AND CONCENTRA_3

MAJOR CUSTOMERS AND CONCENTRATION OF CREDIT RISK (Details) - Accounts receivable - Credit Concentration Risk	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Concentration Risk
Concentration risk percentage	100.00%	100.00%
Southern Nuclear Operating Company
Concentration Risk
Concentration risk percentage	16.00%	24.00%
Tennessee Valley Authority
Concentration Risk
Concentration risk percentage	18.00%	15.00%
Bruce Power
Concentration Risk
Concentration risk percentage	17.00%	11.00%
Comprehensive Decommissioning International
Concentration Risk
Concentration risk percentage	10.00%
All Others
Concentration Risk
Concentration risk percentage	39.00%	50.00%

MAJOR CUSTOMERS AND CONCENTRA_4

MAJOR CUSTOMERS AND CONCENTRATION OF CREDIT RISK Risk (Details) - Revenue - Customer Concentration Risk	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Concentration Risk
Concentration risk percentage	100.00%	100.00%
Southern Nuclear Operating Company
Concentration Risk
Concentration risk percentage	16.00%	31.00%
Bruce Power
Concentration Risk
Concentration risk percentage	12.00%	13.00%
Tennessee Valley Authority
Concentration Risk
Concentration risk percentage	11.00%	18.00%
GUBMK
Concentration Risk
Concentration risk percentage	11.00%
Comprehensive Decommissioning International
Concentration Risk
Concentration risk percentage	10.00%
RCC
Concentration Risk
Concentration risk percentage		11.00%
All Others
Concentration Risk
Concentration risk percentage	40.00%	27.00%

OTHER SUPPLEMENTAL INFORMATIO_2

OTHER SUPPLEMENTAL INFORMATION - Other current assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Unamortized commercial insurance premiums	$ 4,866	$ 2,097
Cash collateral on commercial insurance claims	2,389	1,903
Workers compensation refund	883	474
Prepaid health insurance premiums	1,136	700
Other short-term assets	1,180	698
Total	11,049	6,457
Canada
Sales tax receivable	$ 595	$ 585

OTHER SUPPLEMENTAL INFORMATIO_3

OTHER SUPPLEMENTAL INFORMATION - Other long-term assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
OTHER SUPPLEMENTAL INFORMATION
Equity method investment in RCC	$ 2,521	$ 1,737
Right-of-use lease assets	1,527	2,029
Other long-term assets	1,664	1,946
Total	$ 5,712	$ 5,712

OTHER SUPPLEMENTAL INFORMATIO_4

OTHER SUPPLEMENTAL INFORMATION - Other current liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
OTHER SUPPLEMENTAL INFORMATION.
Accrued workers compensation	$ 430	$ 506
Accrued taxes	126	68
Accrued job cost	2,433	1,081
Accrued legal and professional fees	113	72
Sales tax payable - Canada	5,135	2,372
Stock Compensation	938	448
Short-term lease liability	1,606	1,362
Other accrued liabilities	236	1,261
Total	$ 11,017	$ 7,170

OTHER SUPPLEMENTAL INFORMATIO_5

OTHER SUPPLEMENTAL INFORMATION - Other long-term liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
OTHER SUPPLEMENTAL INFORMATION
Long-term lease liability	$ 511	$ 1,011
Liability for uncertain tax positions	1,136	1,087
Total	$ 1,647	$ 2,098

OTHER SUPPLEMENTAL INFORMATIO_6

OTHER SUPPLEMENTAL INFORMATION - Disaggregated long-lived assets by the geographic area (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 52,755	$ 52,031
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	52,669	51,825
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 86	$ 206

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details) - USD ($) $ in Millions	Jan. 01, 2022	Dec. 31, 2021
Subsequent Event [Line Items]
Nuclear Decommissioning, Backlog Excluding Lost Contracts		$ 270.7
Subsequent Event
Subsequent Event [Line Items]
Percentage of customer total revenue	12.00%
Percentage of customer gross margin	15.00%
Percentage of total revenue in nuclear decommissioning market	10.00%
Percentage of gross margin in nuclear decommissioning market	8.00%
Backlog due to multi year contracts lost	$ 361
Loss in backlog in 2022	30
Loss in backlog in 2023	$ 50
Percentage of estimated gross margin	3.50%