Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 114,383	$ 98,869
Less: accumulated depreciation	(62,110)	(55,014)
Net property and equipment	52,273	43,855
Land
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	4,859	3,857
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	76,025	64,446
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 33,499	$ 30,566