Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net income (loss)	$ 8,313	$ (650)
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation and amortization	3,859	4,148
Provision for credit losses / doubtful accounts	116	104
Stock-based compensation expense	2,234	1,174
Noncash operating lease expense	1,882	2,232
Amortization of debt issuance costs	58	65
Deferred income tax provision	(170)	(12)
Loss (gain) on sale of property and equipment	40	(111)
Loss on early termination of operating lease	0	849
Loss on change in fair value of contingent consideration	303	765
Loss on early debt extinguishment	311	0
Gain on change in fair value of interest rate swap	(37)	0
Changes in operating assets and liabilities:
Accounts receivable	37,096	(11,796)
Contract assets	2,029	8,904
Other current assets	(1,861)	(520)
Accounts payable, including retainage	(21,747)	(635)
Prepaid income taxes	(719)	(562)
Accrued taxes payable	(383)	(501)
Contract liabilities	(325)	13,123
Operating lease liabilities	(1,836)	(2,165)
Accrued expenses and other current liabilities	(1,806)	(1,861)
Payment of contingent consideration liability in excess of acquisition-date fair value	(1,224)	0
Other long-term liabilities	159	69
Net cash provided by operating activities	26,292	12,620
Cash flows from investing activities:
Proceeds from sale of property and equipment	275	189
Purchase of property and equipment	(1,499)	(473)
Net cash used in investing activities	(1,224)	(284)
Cash flows from financing activities:
Payments on Wintrust and A&R Wintrust Term Loans	(21,452)	(9,149)
Proceeds from Wintrust Revolving Loan	10,000	15,194
Payments on Wintrust Revolving Loan	0	(11,694)
Payment of contingent consideration liability up to acquisition-date fair value	(1,776)	0
Payments on finance leases	(1,302)	(1,358)
Payments of debt issuance costs	(50)	(25)
Taxes paid related to net-share settlement of equity awards	(847)	(363)
Proceeds from contributions to Employee Stock Purchase Plan	239	213
Net cash used in financing activities	(15,188)	(7,182)
Increase in cash, cash equivalents and restricted cash	9,880	5,154
Cash, cash equivalents and restricted cash, beginning of period	36,114	14,589
Cash, cash equivalents and restricted cash, end of period	45,994	19,743
Noncash investing and financing transactions:
Right of use assets obtained in exchange for new operating lease liabilities	742	0
Right of use assets obtained in exchange for new finance lease liabilities	3,392	1,968
Right of use assets disposed or adjusted modifying operating lease liabilities	0	(1,276)
Right of use assets disposed or adjusted modifying finance lease liabilities	(30)	(77)
Interest paid	1,181	911
Cash paid for income taxes	$ 3,919	$ 696