Mortgage Banking (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Mortgage servicing assets:
Balance at beginning of period	$ 9,906	$ 9,872	$ 9,893	$ 9,923
Loans sold, servicing retained	701	449	1,459	1,255
Amortization	(536)	(407)	(1,281)	(1,264)
Carrying value before valuation allowance at end of period	10,071	9,914	10,071	9,914
Valuation allowance:
Balance at beginning of period	(770)	(744)	(645)	(911)
Impairment recovery (charges)	7	24	(118)	191
Balance at end of period	(763)	(720)	(763)	(720)
Net carrying value of MSRs at end of period	9,308	9,194	9,308	9,194
Fair value of MSRs at end of period	$ 9,493	$ 9,629	$ 9,493	$ 9,629