Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities
Net (loss) income	$ (7,663)	$ (5,737)
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization	16,035	16,881
Amortization of ROU operating leases	3,612	3,967
Amortization of ROU finance leases	2,391	2,259
Write-off of debt issuance costs upon debt modification		790
Amortization of deferred debt issuance costs	290	430
Deferred income taxes	20	20
Stock-based compensation	2,115	2,154
Gain on disposal of assets, net	(4,561)	(9,763)
Allowance for credit losses	262
Change in operating assets and liabilities:
Accounts receivable	(21,375)	10,402
Income tax receivable	(73)	(64)
Inventory	(893)	279
Prepaid expenses and other	6,239	2,006
Contract assets	(7,845)	14,601
Accounts payable	27,339	(16,841)
Accrued liabilities	(2,329)	(5,530)
Operating lease liabilities	(3,556)	(3,803)
Income tax payable	(84)	(307)
Contract liabilities	(823)	(7,504)
Net cash provided by operating activities	9,101	4,240
Cash flows from investing activities:
Proceeds from sale of property and equipment	4,472	25,643
Purchase of property and equipment	(10,627)	(11,594)
Insurance claim proceeds related to property and equipment		440
Net cash (used in) provided by investing activities	(6,155)	14,489
Cash flows from financing activities:
Borrowings on credit	9,000	33,000
Payments made on borrowings of credit	(18,219)	(49,086)
Loan costs from Credit Facility	(664)
Payments of finance lease liabilities	(2,235)	(2,500)
Payments related to tax withholding for stock-based compensation	(384)	(949)
Exercise of stock options		110
Net cash used in by financing activities	(12,502)	(19,425)
Net change in cash and cash equivalents	(9,556)	(696)
Cash and cash equivalents at beginning of period	12,293	1,589
Cash and cash equivalents at end of period	2,737	893
Supplemental disclosures of cash flow information, cash paid during the period for:
Interest	1,990	2,220
Taxes, net of refunds	$ 533	$ 691