Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accrued Liabilities, Current [Abstract]
High deductible insurance	$ 5,000	$ 4,980
Accrued payroll	24,960	23,140
Other	29,020	32,420
Total accrued liabilities	$ 58,980	$ 60,540