Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities
Net (loss) income	$ (7,910)	$ 4,458
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization	10,815	11,313
Amortization of ROU operating leases	2,459	2,794
Amortization of ROU finance leases	1,546	1,602
Write-off of debt issuance costs upon debt modification		790
Amortization of deferred debt issuance costs	161	429
Deferred income taxes	41	(81)
Stock-based compensation	1,164	1,628
Gain on disposal of assets, net	(1,173)	(8,971)
Allowance for credit losses	56
Change in operating assets and liabilities:
Accounts receivable	(23,158)	5,147
Income tax receivable	(73)	(682)
Inventory	(664)	277
Prepaid expenses and other	5,050	337
Contract assets	1,511	9,159
Accounts payable	25,363	(3,754)
Accrued liabilities	(2,266)	(5,290)
Operating lease liabilities	(2,317)	(2,571)
Income tax payable	192	(538)
Contract liabilities	879	(4,772)
Net cash provided by operating activities	11,676	11,275
Cash flows from investing activities:
Proceeds from sale of property and equipment	1,043	24,737
Purchase of property and equipment	(8,001)	(4,715)
Insurance claim proceeds related to property and equipment		440
Net cash (used in) provided by investing activities	(6,958)	20,462
Cash flows from financing activities:
Borrowings on credit	5,000	20,000
Payments made on borrowings of credit	(11,742)	(49,086)
Loan costs from Credit Facility	(611)
Payments of finance lease liabilities	(1,472)	(1,675)
Payments related to tax withholding for stock-based compensation	(97)	(241)
Exercise of stock options		86
Net cash used in by financing activities	(8,922)	(30,916)
Net change in cash and cash equivalents	(4,204)	821
Cash and cash equivalents at beginning of period	12,293	1,589
Cash and cash equivalents at end of period	8,089	2,410
Supplemental disclosures of cash flow information, cash paid during the period for:
Interest	1,071	2,064
Taxes, net of refunds	$ 481	$ 640