Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 138,460	$ 147,549
Less: accumulated depreciation	(85,361)	(78,345)
Net property and equipment	53,099	69,204
Land
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	5,283	6,521
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	87,995	98,140
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 45,182	$ 42,888