Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net income	$ 17,976	$ 13,549
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	7,995	5,520
Provision for credit losses	139	90
Non-cash stock-based compensation expense	3,236	2,720
Non-cash operating lease expense	1,992	2,089
Amortization of debt issuance costs	21	21
Deferred income tax provision	128	(107)
Gain on sale of property and equipment	(740)	(557)
Loss on change in fair value of contingent consideration	1,222	1,734
Loss (gain) on change in fair value of interest rate swap	153	(137)
Changes in operating assets and liabilities:
Accounts receivable	6,455	496
Contract assets	1,644	3,715
Other current assets	(1,040)	(376)
Accounts payable, including retainage	(5,428)	(12,195)
Prepaid income taxes	(1,916)	(601)
Accrued taxes payable	(1,470)	(266)
Contract liabilities	(12,419)	4,301
Operating lease liabilities	(1,968)	(1,961)
Accrued expenses and other current liabilities	(10,890)	(3,639)
Payment of contingent consideration liability in excess of acquisition-date fair value	(711)	(1,687)
Other long-term liabilities	(137)	(149)
Net cash provided by operating activities	4,242	12,560
Cash flows from investing activities:
Proceeds from sale of property and equipment	926	598
Advances from joint ventures	0	7
Purchase of property and equipment	(3,075)	(5,836)
Net cash used in investing activities	(2,152)	(5,231)
Cash flows from financing activities:
Payments of debt issuance costs	(125)	0
Payment of contingent consideration liability up to acquisition-date fair value	(2,289)	(1,313)
Payments on finance leases	(1,767)	(1,407)
Proceeds from the sale of shares to cover employee taxes	6,344	0
Taxes paid related to net-share settlement of equity awards	(10,684)	(5,187)
Proceeds from contributions to Employee Stock Purchase Plan	441	279
Net cash used in financing activities	(8,080)	(7,628)
Decrease in cash, cash equivalents and restricted cash	(5,990)	(299)
Cash, cash equivalents and restricted cash, beginning of period	44,995	59,898
Cash, cash equivalents and restricted cash, end of period	39,005	59,599
Noncash investing and financing transactions:
Kent Island Transaction, measurement period adjustment	(94)	0
Right of use assets obtained in exchange for new operating lease liabilities	1,676	3,200
Right of use assets obtained in exchange for new finance lease liabilities	7,933	1,341
Right of use assets disposed or adjusted modifying finance lease liabilities	0	2
Interest paid	1,058	918
Cash paid for income taxes	4,023	3,041
Consolidated Mechanical
Cash flows from investing activities:
Net of cash acquired	$ (3)	$ 0