Mortgage Banking (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Mortgage servicing assets:
Balance at beginning of period	$ 10,419	$ 10,240
Loans sold, servicing retained	278	324
Amortization	(286)	(319)
Carrying value before valuation allowance at end of period	10,411	10,245
Valuation allowance:
Balance at beginning of period	(300)	(432)
Impairment recovery (charges)	(113)	37
Balance at end of period	(413)	(395)
Net carrying value of MSRs at end of period	9,998	9,850
Fair value of MSRs at end of period	$ 10,264	$ 10,280