Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 103,689	$ 82,675
Less: accumulated depreciation	(50,699)	(43,938)
Net property and equipment	52,990	38,737
Land
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	4,644	2,364
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	70,572	55,371
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 28,473	$ 24,940