Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Sales, property, and payroll taxes payable	$ 24,984	$ 15,237
Accrued compensation	21,874	27,738
Acquisition purchase price amounts payable to sellers	5,965	6,374
Trade accounts payable	7,187	5,871
Benefits liabilities and withholding payable	2,852	3,353
Accrued interest payable	8,121	1,459
Other accrued liabilities	10,934	12,366
Accounts payable and accrued liabilities	$ 81,917	$ 72,398