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Property and Equipment - Property and Equipment (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Property, Plant and Equipment [Line Items]    
Property and Equipment, gross $ 3,322,675 $ 3,239,135
Accumulated depreciation (1,330,985) (1,256,319)
Property and equipment, net 1,991,690 1,982,816
Land and land improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and Equipment, gross 264,064 255,179
Buildings [Member]    
Property, Plant and Equipment [Line Items]    
Property and Equipment, gross 2,391,028 2,369,851
Furniture, fixtures and equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and Equipment, gross 628,251 603,529
Construction-in-progress [Member]    
Property, Plant and Equipment [Line Items]    
Property and Equipment, gross $ 39,332 $ 10,576