Goodwill and Intangible Asset (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Goodwill and Intangible Assets [Abstract]
Goodwill	$ 14,916		$ 14,916
Estimated useful lives customer relationship	5 years
Amortization of intangible assets	$ 600	$ 600
Annual amortization expense	1,700
Asset impairment charges	0
Finite-Lived Intangible Assets [Line Items]
Cost	11,286		11,286
Accumulated Amortization	10,722		10,157
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	11,286		11,286
Accumulated Amortization	$ 10,722		$ 10,157