Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net (loss) income	$ (4,856)	$ 928
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization	5,503	5,704
Amortization of ROU operating leases	1,176	1,348
Amortization of ROU finance leases	760	781
Amortization of deferred debt issuance costs	32	239
Deferred income taxes	19	50
Stock-based compensation	370	383
Gain on disposal of assets, net	(809)	(1,610)
Change in operating assets and liabilities:
Accounts receivable	(13,907)	3,837
Inventory	(189)	74
Prepaid expenses and other	2,504	60
Contract assets	4,055	10,474
Accounts payable	12,689	(9,735)
Accrued liabilities	(3,075)	(2,371)
Operating lease liabilities	(1,183)	(1,196)
Income tax payable	1,376	137
Contract liabilities	5,595	15
Net cash provided by operating activities	10,060	9,118
Cash flows from investing activities:
Proceeds from sale of property and equipment	713	1,950
Purchase of property and equipment	(3,523)	(1,618)
Insurance claim proceeds related to property and equipment		440
Net cash (used in) provided by investing activities	(2,810)	772
Cash flows from financing activities:
Borrowings from Credit Facility		5,000
Payments made on borrowings from Credit Facility	(11,671)	(11,155)
Loan costs from Credit Facility	(494)
Payments of finance lease liabilities	(637)	(732)
Payments related to tax withholding for stock-based compensation	(15)	(36)
Exercise of stock options		86
Net cash used in by financing activities	(12,817)	(6,837)
Net change in cash, cash equivalents and restricted cash	(5,567)	3,053
Cash, cash equivalents and restricted cash at beginning of period	12,293	1,589
Cash, cash equivalents and restricted cash at end of period	6,726	4,642
Supplemental disclosures of cash flow information, cash paid during the period for:
Interest	154	443
Taxes, net of refunds	$ (71)	$ (37)