Mortgage Servicing Rights, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Servicing Asset at Amortized Value, Balance [Roll Forward]
Servicing Asset at Amortized Cost, Beginning	$ 1,762	$ 2,146	$ 1,952	$ 2,316
Servicing Asset at Amortized Value, Additions	72	97	165	242
Servicing Asset at Amortized Value, Amortization	(131)	(192)	(415)	(506)
Servicing Asset at Amortized Value, Valuation Allowance	0	(20)	1	(21)
Servicing Asset at Amortized Cost, Ending	1,703	2,031	1,703	2,031
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance [Abstract]
Valuation Allowance for Impairment of Recognized Servicing Assets, Beginning Balance	0	1	1	0
Valuation Allowance for Impairment of Recognized Servicing Assets, Ending Balance	0	21	0	21
Servicing Asset at Amortized Value, Fair Value [Abstract]
Servicing Asset at Amortized Value, Fair Value, Beginning	2,520	2,539	2,678	3,086
Servicing Asset at Amortized Value, Fair Value, Ending	$ 2,441	$ 2,455	$ 2,441	$ 2,455