Securities - Contractual Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Amortized Cost
Due in one year or less	$ 3,934
Due after one year through five years	6,420
Due after five years through ten years	2,720
Due after ten years	0
Available-for-sale securities, amortized cost basis	160,311	$ 172,480
Fair Value
Due in one year or less	3,942
Due after one year through five years	6,430
Due after five years through ten years	2,758
Due after ten years	0
Securities available-for-sale	160,582	171,440
U.S. government agency residential mortgage-backed securities
Amortized Cost
Debt maturities with a single maturity date	128,196
Available-for-sale securities, amortized cost basis	128,196	127,039
Fair Value
Debt maturities with a single maturity date	128,088
Securities available-for-sale	128,088	126,029
Collateralized residential mortgage obligations
Amortized Cost
Debt maturities with a single maturity date	16,382
Available-for-sale securities, amortized cost basis	16,382	17,990
Fair Value
Debt maturities with a single maturity date	16,453
Securities available-for-sale	16,453	17,833
Equity securities
Amortized Cost
Equity	2,659
Available-for-sale securities, amortized cost basis	2,659	2,632
Fair Value
Equity	2,911
Securities available-for-sale	$ 2,911	$ 2,790