Securities - Contractual Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Amortized Cost
Due in one year or less	$ 4,311
Due after one year through five years	6,033
Due after five years through ten years	15,398
Due after ten years	0
Available-for-sale securities, amortized cost basis	183,591	$ 172,480
Fair Value
Due in one year or less	4,321
Due after one year through five years	6,041
Due after five years through ten years	15,356
Due after ten years	0
Securities available-for-sale	183,646	171,440
U.S. government agency residential mortgage-backed securities
Amortized Cost
Debt maturities with a single maturity date	139,627
Available-for-sale securities, amortized cost basis	139,627	127,039
Fair Value
Debt maturities with a single maturity date	139,354
Securities available-for-sale	139,354	126,029
Collateralized residential mortgage obligations
Amortized Cost
Debt maturities with a single maturity date	15,549
Available-for-sale securities, amortized cost basis	15,549	17,990
Fair Value
Debt maturities with a single maturity date	15,610
Securities available-for-sale	15,610	17,833
Equity securities
Amortized Cost
Equity	2,673
Available-for-sale securities, amortized cost basis	2,673	2,632
Fair Value
Equity	2,964
Securities available-for-sale	$ 2,964	$ 2,790