Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Accrued employee compensation	$ 120,446	$ 91,115
Operating lease obligations	23,181	21,461
Accrued interest	34,089	38,340
Accrued professional fees	10,755	15,834
Other accrued expenses	176,010	158,864
Total	$ 364,481	$ 325,614