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Property and Equipment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 369,892 $ 220,267  
Less: accumulated depreciation (133,835) (107,820)  
Property and equipment, net 236,057 112,447  
Depreciation, Nonproduction 26,624 16,140 $ 15,947
Land      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 30,364 14,309  
Buildings      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 55,137 19,261  
Furniture, fixtures, equipment and leasehold improvements      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 284,391 $ 186,697