Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities
Net loss	$ (17,875)	$ (12,612)	$ (14,560)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	18,844	20,915	22,608
Amortization of ROU operating leases	6,763	4,813	5,102
Amortization of ROU finance leases	5,034	3,142	2,822
Write-off of debt issuance costs upon debt modification	119		790
Amortization of deferred debt issuance costs	1,616	424	430
Deferred income taxes	(103)	13	(9)
Stock-based compensation	2,042	2,754	2,401
Gain on disposal of assets, net	(8,455)	(4,970)	(11,418)
Intangible asset impairment loss	6,890
Allowance for credit losses	(109)	322
Change in operating assets and liabilities:
Accounts receivable	14,129	(28,660)	4,703
Income tax receivable	(224)	3	14
Inventory	(729)	(1,485)	371
Prepaid expenses and other	(55)	1,645	143
Contract assets	(37,619)	(15,374)	3,742
Accounts payable	(4,507)	39,370	589
Accrued liabilities	11,817	(6,630)	(6,544)
Operating lease liabilities	(6,807)	(4,748)	(4,940)
Income tax payable	48	(79)	(38)
Contract liabilities	26,359	10,722	(6,137)
Net cash provided by operating activities	17,178	9,565	69
Cash flows from investing activities:
Proceeds from sale of property and equipment	11,079	4,880	27,164
Purchase of property and equipment	(8,909)	(14,584)	(16,975)
Insurance claim proceeds related to property and equipment			440
Net cash provided by (used in) investing activities	2,170	(9,704)	10,629
Cash flows from financing activities:
Borrowings on credit	106,958	24,000	53,000
Payments made on borrowings on credit	(104,431)	(28,274)	(49,120)
Proceeds from failed sale-leaseback arrangement	14,702
Proceeds from sale-leaseback financing	2,397
Loan costs from Credit Agreement and prior credit facility	(6,537)	(664)
Payments of finance lease liabilities	(4,791)	(2,992)	(3,035)
Payments related to tax withholding for share-based compensation	(492)	(440)	(949)
Exercise of stock options			110
Net cash provided by (used in) financing activities	7,806	(8,370)	6
Net change in cash, cash equivalents and restricted cash	27,154	(8,509)	10,704
Cash, cash equivalents and restricted cash at beginning of period	3,784	12,293	1,589
Cash, cash equivalents and restricted cash at end of period	30,938	3,784	12,293
Supplemental disclosures of cash flow information, cash paid during the period for:
Interest	12,084	2,923	2,423
Taxes, net of refunds	$ 618	$ 533	$ 568