Mortgage Banking (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Mortgage servicing assets:
Balance at beginning of period	$ 9,879	$ 9,832	$ 9,893	$ 9,923
Loans sold, servicing retained	461	486	758	806
Amortization	(434)	(446)	(745)	(857)
Carrying value before valuation allowance at end of period	9,906	9,872	9,906	9,872
Valuation allowance:
Balance at beginning of period	(666)	(885)	(645)	(911)
Impairment recovery (charges)	(104)	141	(125)	167
Balance at end of period	(770)	(744)	(770)	(744)
Net carrying value of MSRs at end of period	9,136	9,128	9,136	9,128
Fair value of MSRs at end of period	$ 9,273	$ 9,574	$ 9,273	$ 9,574