UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net income (loss)	$ 49,774	$ 3,662
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization of property and equipment	30,139	29,659
Amortization of intangible assets	2,399	2,445
Stock-based compensation expense	5,759	4,248
Deferred income taxes	347	0
Gain on sale of property and equipment	(1,701)	(2,995)
Other non-cash items	(180)	1,266
Changes in operating assets and liabilities:
Accounts receivable, net	55,665	(34,139)
Contract assets, net	(42,167)	17,057
Receivable for insurance claims in excess of deductibles	(742)	(30)
Other assets	4,737	(3,507)
Accounts payable	11,133	(10,336)
Contract liabilities	(36,516)	16,514
Accrued self-insurance	872	(4,161)
Other liabilities	36,628	10,688
Net cash flows provided by operating activities	116,147	30,371
Cash flows from investing activities:
Proceeds from sale of property and equipment	3,726	3,380
Purchases of property and equipment	(34,289)	(45,961)
Net cash flows used in investing activities	(30,563)	(42,581)
Cash flows from financing activities:
Borrowings under revolving lines of credit	488,553	290,907
Repayments under revolving lines of credit	(474,695)	(279,488)
Payment of principal obligations under equipment notes	(2,158)	(2,595)
Payment of principal obligations under finance leases	(568)	(549)
Repurchase of common stock	(75,000)	(14,251)
Debt refinancing costs	0	(33)
Payments related to tax withholding for stock-based compensation	(2,653)	(5,866)
Other financing activities	0	1,600
Net cash flows used in financing activities	(66,521)	(10,275)
Effect of exchange rate changes on cash	429	(545)
Net increase (decrease) in cash and cash equivalents	19,492	(23,030)
Cash and cash equivalents:
Beginning of period	3,464	24,899
End of period	$ 22,956	$ 1,869