Summary of Significant Accounting Policies - Foreign Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash concentration
Cash and cash equivalents	$ 455,825	$ 217,778	$ 248,692	$ 200,512
Collective bargaining agreements
Percentage of labor force subject to collective bargaining agreements	22.90%
Insurance
Self-insurance reserve	$ 57,900	47,600
Accounts receivable
Allowance for credit losses	2,000	$ 1,500
Estimated net impact of change in estimate
Decrease in net income from revision in contract estimates	$ (28,000)
Basic EPS impact to year	$ (0.52)
Diluted EPS impact to year	$ (0.51)