Securities - Contractual Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Amortized Cost
Due in one year or less	$ 3,431
Due after one year through five years	3,784
Due after five years through ten years	14,585
Due after ten years	0
Amortized Cost	157,277	$ 167,612
Fair Value
Due in one year or less	3,430
Due after one year through five years	3,776
Due after five years through ten years	14,085
Due after ten years	0
Securities available-for-sale	156,302	165,927
U.S. government agency residential mortgage-backed securities
Amortized Cost
Debt maturities with a single maturity date	119,082
Amortized Cost	119,082	128,550
Fair Value
Debt maturities with a single maturity date	118,354
Securities available-for-sale	118,354	127,313
Collateralized residential mortgage obligations
Amortized Cost
Debt maturities with a single maturity date	13,692
Amortized Cost	13,692	14,566
Fair Value
Debt maturities with a single maturity date	13,627
Securities available-for-sale	13,627	14,456
Equity securities
Amortized Cost
Equity	2,703
Amortized Cost	2,703	2,689
Fair Value
Equity	3,030
Securities available-for-sale	$ 3,030	$ 3,022