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Accounts Payable and Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Accounts Payable and Accrued Liabilities    
Retention amounts included in accounts payable $ 15,200 $ 12,600
Accrued liabilities    
Payroll and related employee benefits 77,887 81,088
Current operating lease liability 61,587 73,033
Casualty insurance reserves 7,107 8,365
Corporate income taxes and other taxes 7,967 13,783
Other 20,273 24,404
Total accrued liabilities $ 174,821 $ 200,673