Fixed Assets - Schedule of Fixed Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 391,949	$ 319,925
Development in Process	81,736	38,035
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(190,834)	(171,298)
Property, Plant and Equipment, Net	201,115	148,627
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	259,524	231,005
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	42,261	42,485
Land, Buildings and Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 8,428	$ 8,400