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Property and Equipment - Schedule of Property and Equipment (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Property and Equipment    
Property and equipment, at cost $ 3,605,039 $ 3,927,691
Less: accumulated depreciation (1,060,553) (1,110,335)
Property and equipment, net 2,544,486 2,817,356
Land    
Property and Equipment    
Property and equipment, at cost 536,682 618,210
Land improvements    
Property and Equipment    
Property and equipment, at cost 7,994 7,994
Buildings and site improvements    
Property and Equipment    
Property and equipment, at cost 2,559,791 2,724,277
Furniture, fixtures and equipment    
Property and Equipment    
Property and equipment, at cost 484,763 539,729
Construction in progress    
Property and Equipment    
Property and equipment, at cost $ 15,809 $ 37,481