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Property and Equipment (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 220,267,000 $ 219,345,000  
Less: accumulated depreciation (107,820,000) (105,595,000)  
Property and equipment, net 112,447,000 113,750,000  
Depreciation expense 16,140,000 15,947,000 $ 14,285,000
Land      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 14,309,000 12,171,000  
Buildings      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 19,261,000 18,494,000  
Furniture, fixtures, equipment and leasehold improvements      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 186,697,000 $ 188,680,000