Goodwill and Intangible Assets (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Indefinite-lived Intangible Assets [Line Items]
Begnning Balance, Gross Carrying Amount	$ 14,477	$ 14,302	$ 14,302
Amortization of intangible assets, Gross Carrying Amount	0	0	0
Intangible assets acquired, Gross Carrying Amount		175
Ending Balance, Gross Carrying Amount	14,477	14,477	14,302
Beginning Balance, Accumulated Amortization	(12,606)	(11,907)	(10,805)
Amortization of intangible assets, Accumulated Amortization	(535)	(699)	(1,102)
Intangible assets acquired, Accumulated Amortization		0
Ending Balance, Accumulated Amortization	(13,141)	(12,606)	(11,907)
Beginning Balance, Net Value	1,871	2,395	3,497
Amortization of Intangible Assets, Net Value	(535)	(699)	(1,102)
Intangible assets acquired, Net Value		175
Ending Balance, Net Value	$ 1,336	$ 1,871	$ 2,395