Investment Securities (Investments Classified by Contractual Maturity Date) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Available-for-sale Securities [Abstract]
Available-for-sale, Amortized cost, Due in one year or less	$ 357
Available-for-sale, Amortized cost, Due after one year through five years	6,460
Available-for-sale, Amortized cost, Due after five years through ten years	73,413
Available-for-sale, Amortized cost, Due after ten years	207,207
Available-for-sale, Amortized cost, Mutual fund	511
Available-for-sale, Amortized cost, Tax credit investments	0
Available-For-Sale Securities, Debt Maturities, Amortized Cost Basis	287,948
Available-for-sale, Estimated fair value, Due in one year or less	359
Available-for-sale, Estimated Fair Value, Due after one year through five years	6,475
Available-for-sale, Estimated fair value, Due after five years through ten years	71,768
Available-for-sale Estimated fair value, Due after ten years	210,624
Available-for-sale, Estimated fair value, Mutual fund	520
Available-for-sale, Estimated fair value, Tax credit investments	0
Available-for-sale Securities, Debt Securities	289,746
Held-to-maturity Securities
Held-to-maturity Securities, Amortized cost, Due in one year or less	185
Held-to-maturity Securities, Amortized cost, Due after one year through five years	18,551
Held-to-maturity Securities, Amortized cost, Due after five years through ten years	103,800
Held-to-maturity Securities, Amortized cost, Due after ten years	32,344
Held-to-maturity Securities, Amortized cost, Mutual fund	0
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	574
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount	155,454	1,320
Held-to-maturity Estimated fair value, Due in one year or less	186
Held-to-maturity, Estimated fair value, Due after one year through five years	18,516
Held-to-maturity Estimated fair value, Due after five years through ten years	104,511
Held-to-maturity Estimated fair value, Due after ten years	32,667
Held-to-maturity Estimated fair value, Mutual fund	0
Invesment Securities held-to-maturity, estimated fair value (in dollars)	574
Estimated fair value	$ 156,454	$ 1,342