Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accounts Payable and Accrued Liabilities, Current [Abstract]
Salaries and wages	$ 60,601	$ 65,310
Insurance reserves	55,309	64,633
Deferred payroll taxes (Note 3)	31,553	36,336
Paid time off	26,821	37,848
Real estate taxes	25,826	25,495
Interest	11,239	11,453
Utilities	7,430	7,507
Taxes payable	1,978	3,806
Other	34,074	35,463
Total	$ 254,831	$ 287,851