Mortgage Servicing Rights, Net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Servicing Asset at Amortized Value, Balance [Roll Forward]
Servicing Asset at Amortized Cost, Beginning	$ 1,644	$ 1,952
Servicing Asset at Amortized Value, Additions	53	53
Servicing Asset at Amortized Value, Amortization	(93)	(144)
Servicing Asset at Amortized Value, Valuation Allowance	0	1
Servicing Asset at Amortized Cost, Ending	1,604	1,862
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance [Abstract]
Valuation Allowance for Impairment of Recognized Servicing Assets, Beginning Balance	0	1
Valuation Allowance for Impairment of Recognized Servicing Assets, Ending Balance	0	0
Servicing Asset at Amortized Value, Fair Value [Abstract]
Servicing Asset at Amortized Value, Fair Value, Beginning	2,528	2,678
Servicing Asset at Amortized Value, Fair Value, Ending	$ 2,738	$ 2,689