Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accounts Payable and Accrued Liabilities
Retention amounts included in accounts payable	$ 26,900	$ 21,500
Accrued liabilities
Payroll and related employee benefits	140,770	114,053
Current operating lease liability	89,253	72,565
Casualty insurance reserves	18,890	19,935
Corporate income taxes and other taxes	39,853	16,213
Other	32,873	23,071
Total accrued liabilities	$ 321,639	$ 245,837