Properties and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Impairment charge	$ 500	$ 300
Adjustments to retire property plant and equipment	8,600	4,300
Loss associated with disposal of property plant and equipment	100	400
Proceeds from sale of assets	(1,236)	$ (75)	$ (142)
Pretax gain on sale of assets	$ 800