Intangible Assets and Goodwill (Details 2) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Core deposit intangibles and other intangible assets
Less: accumulated amortization	$ (9,140)	$ (8,570)
Net carrying amount	420	1,000
Core deposit intangibles
Core deposit intangibles and other intangible assets
Gross carrying amount	9,566	9,566
Less: accumulated amortization	(9,143)	(8,569)
Net carrying amount	423	997
Other intangibles
Core deposit intangibles and other intangible assets
Gross carrying amount	0	0
Less: accumulated amortization	0	0
Net carrying amount	$ 0	$ 0