Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accounts payable and other accrued liabilities
Accounts payable	$ 40,241	$ 20,177
Accrued liabilities	41,167	15,356
Total Accounts payable and other accrued liabilities	81,408	35,533
Accrued payroll costs
Payroll and benefits	43,738	38,257
Payroll taxes	22,466	21,842
Health insurance liabilities	4,474	4,641
Workers’ compensation liabilities	746	1,109
Total Accrued payroll costs	71,424	$ 65,849
Deferred Payroll Taxes | COVID-19
Accrued payroll costs
Payroll tax CARES act liability	$ 19,300