Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 6,714	$ 5,807
Adjustments to reconcile net income to cash (used in) provided by operating activities:
Depreciation and amortization	5,948	6,171
Noncash operating lease expense	4,268	4,033
Provision for doubtful accounts	198	100
Stock-based compensation expense	2,601	1,068
Loss on early debt extinguishment	1,961	0
Amortization of debt discount and issuance costs	280	2,157
Deferred income tax provision (benefit)	1,757	(1,301)
(Gain) loss on change in fair value of warrant liability	(14)	1,634
Gain on sale of property and equipment	(2)	(95)
Changes in operating assets and liabilities:
Accounts receivable	3,408	19,200
Contract assets	(15,054)	10,090
Other current assets	(555)	(115)
Accounts payable, including retainage	(5,578)	(19,504)
Contract liabilities	(20,399)	4,278
Prepaid income taxes	(114)	494
Accrued taxes payable	(1,170)	1,659
Accrued expenses and other current liabilities	(706)	4,713
Operating lease liabilities	(4,083)	(4,337)
Other long-term liabilities	(3,693)	3,763
Net cash (used in) provided by operating activities	(24,233)	39,815
Cash flows from investing activities:
Proceeds from sale of property and equipment	467	162
Jake Marshall Transaction, net of cash acquired	(18,977)	0
Advances to joint ventures	(2)	(2)
Purchase of property and equipment	(791)	(1,483)
Net cash used in investing activities	(19,303)	(1,323)
Cash flows from financing activities:
Proceeds from Wintrust and A&R Wintrust Term Loans	40,000	0
Proceeds from 2019 Revolving Credit Facility	0	7,250
Payments on 2019 Revolving Credit Facility	0	(7,250)
Prepayment penalty and other costs associated with debt extinguishment	(1,376)	0
Proceeds from sale of common stock	22,773	0
Proceeds from exercise of warrants	1,989	0
Payments on finance leases	(2,623)	(2,664)
Proceeds from contributions to employee stock purchase plan	323	191
Taxes paid related to net-share settlement of equity awards	(459)	(216)
Payments of debt issuance costs	(643)	0
Net cash provided by (used in) financing activities	15,865	(4,689)
(Decrease) increase in cash, cash equivalents and restricted cash	(27,671)	33,803
Cash, cash equivalents and restricted cash, beginning of year	42,260	8,457
Cash, cash equivalents and restricted cash, end of year	14,589	42,260
Noncash investing and financing transactions:
Earnout Payments associated with the Jake Marshall Transaction	3,089	0
Right of use assets obtained in exchange for new operating lease liabilities	5,417	1,096
Right of use assets obtained in exchange for new finance lease liabilities	1,296	2,624
Right of use assets disposed or adjusted modifying operating leases liabilities	219	621
Right of use assets disposed or adjusted modifying finance leases liabilities	0	(86)
Interest paid	2,549	6,467
Cash paid for income taxes	2,290	734
Wintrust And A&R Wintrust Term Loan
Cash flows from financing activities:
Repayments of Term Loans	(5,119)	0
2019 Refinancing Term Loan
Cash flows from financing activities:
Repayments of Term Loans	$ (39,000)	$ (2,000)