Summary of Significant Accounting Policies - Other Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Amortization expense	$ 241,879	$ 224,444	$ 219,857
Equipment and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Equipment and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Software development
Property, Plant and Equipment [Line Items]
Unamortized software costs	$ 20,280	22,708
Amortization expense	$ 2,428	$ 1,571