Securities - Amortized Cost and Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Available-for-sale, Amortized Cost	$ 189,876	$ 198,433
Gross Unrealized Gains	2,132	1,362
Gross Unrealized Losses	(557)	(1,558)
Available‑for‑sale securities, at fair value	191,451	198,237
Held-to-maturity Securities [Abstract]
Held-to-maturity, Amortized Cost	53,308	57,278
Gross Unrealized Gains	567	544
Gross Unrealized Losses	(679)	(1,234)
Held-to-maturity, fair value (in dollars)	53,196	56,588
US Treasury and Government [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Available-for-sale, Amortized Cost	55,142	45,168
Gross Unrealized Gains	57	38
Gross Unrealized Losses	(59)	(95)
Available‑for‑sale securities, at fair value	55,140	45,111
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Available-for-sale, Amortized Cost	105,026	121,042
Gross Unrealized Gains	1,994	1,282
Gross Unrealized Losses	(146)	(934)
Available‑for‑sale securities, at fair value	106,874	121,390
Held-to-maturity Securities [Abstract]
Held-to-maturity, Amortized Cost	17,777	16,788
Gross Unrealized Gains	447	409
Gross Unrealized Losses	(248)	(528)
Held-to-maturity, fair value (in dollars)	17,976	16,669
Collateralized Mortgage Backed Securities [Member]
Available-for-sale Securities, Fair Value to Amortized Cost Basis [Abstract]
Available-for-sale, Amortized Cost	29,708	32,223
Gross Unrealized Gains	81	42
Gross Unrealized Losses	(352)	(529)
Available‑for‑sale securities, at fair value	29,437	31,736
Held-to-maturity Securities [Abstract]
Held-to-maturity, Amortized Cost	35,531	40,490
Gross Unrealized Gains	120	135
Gross Unrealized Losses	(431)	(706)
Held-to-maturity, fair value (in dollars)	$ 35,220	$ 39,919