Basis of Presentation and Summary of Significant Accounting Policies (PPE) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) divestiture	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 310,008		$ 310,008		$ 281,460
Less: accumulated depreciation	(100,857)		(100,857)		(95,249)
Property, plant and equipment, net	209,151		209,151		186,211
Depreciation expense	$ 2,600	$ 2,300	7,600	$ 6,800
Number of divestitures | divestiture	0
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 72,055		72,055		66,957
Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	167,933		167,933		148,483
Furniture, equipment and automobiles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 70,020		$ 70,020		$ 66,020