Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss	$ (650)	$ (1,550)
Adjustments to reconcile net loss to cash provided by (used in) operating activities:
Depreciation and amortization	4,148	2,964
Provision for doubtful accounts	104	70
Stock-based compensation expense	1,174	1,313
Noncash operating lease expense	2,232	2,091
Amortization of debt issuance costs	65	220
Deferred income tax provision	(12)	(306)
Gain on sale of property and equipment	(111)	(8)
Loss on early termination of operating lease	849	0
Change in fair value of contingent consideration	765	0
Loss on early debt extinguishment	0	1,961
Gain on change in fair value of warrant liability	0	(14)
Changes in operating assets and liabilities:
Accounts receivable	(11,796)	(8,918)
Contract assets	8,904	(3,717)
Other current assets	(520)	(1,306)
Accounts payable, including retainage	(635)	190
Prepaid income taxes	(562)	(891)
Accrued taxes payable	(501)	(1,671)
Contract liabilities	13,123	(7,469)
Operating lease liabilities	(2,165)	(2,004)
Accrued expenses and other current liabilities	(1,861)	(5,450)
Other long-term liabilities	69	(114)
Net cash provided by (used in) operating activities	12,620	(24,609)
Cash flows from investing activities:
Proceeds from sale of property and equipment	189	361
Purchase of property and equipment	(473)	(501)
Net cash used in investing activities	(284)	(140)
Cash flows from financing activities:
Proceeds from Wintrust Term Loan (as defined in Note 6)	0	30,000
Payments on Wintrust and A&R Wintrust Term Loans	(9,149)	(2,000)
Proceeds from A&R Wintrust Revolving Loan (as defined in Note 6)	15,194	0
Payments on 2019 Refinancing Term Loan (as defined in Note 6)	(11,694)	0
Payments on 2019 Refinancing Term Loan (as defined in Note 6)	0	(39,000)
Prepayment penalty and other costs associated with early debt extinguishment	0	(1,376)
Proceeds from the sale of common stock	0	22,773
Proceeds from the exercise of warrants	0	1,989
Payments on finance leases	(1,358)	(1,318)
Payments of debt issuance costs	(25)	(593)
Taxes paid related to net-share settlement of equity awards	(363)	(401)
Proceeds from contributions to Employee Stock Purchase Plan	213	221
Net cash (used in) provided by financing activities	(7,182)	10,295
Increase (decrease) in cash, cash equivalents and restricted cash	5,154	(14,454)
Cash, cash equivalents and restricted cash, beginning of period	14,589	42,260
Cash, cash equivalents and restricted cash, end of period	19,743	27,806
Noncash investing and financing transactions:
Right of use assets obtained in exchange for new operating lease liabilities	0	156
Right of use assets obtained in exchange for new finance lease liabilities	1,968	336
Right of use assets disposed or adjusted modifying operating lease liabilities	(1,276)	36
Right of use assets disposed or adjusted modifying finance lease liabilities	(77)	0
Interest paid	911	1,741
Cash paid for income taxes	$ 696	$ 2,096