Investment Securities (Investments Classified by Contractual Maturity Date) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Available-for-sale Securities [Abstract]
Available-for-sale, Amortized cost, Due in one year or less	$ 3,238
Available-for-sale, Amortized cost, Due after one year through five years	5,245
Available-for-sale, Amortized cost, Due after five years through ten years	76,423
Available-for-sale, Amortized cost, Due after ten years	187,289
Available-for-sale, Amortized cost, Mutual fund	508
Available-for-sale, Amortized cost, Tax credit investments	0
Available-For-Sale Securities, Debt Maturities, Amortized Cost Basis	272,703
Available-for-sale, Estimated fair value, Due in one year or less	3,240
Available-for-sale, Estimated Fair Value, Due after one year through five years	5,258
Available-for-sale, Estimated fair value, Due after five years through ten years	75,050
Available-for-sale Estimated fair value, Due after ten years	192,029
Available-for-sale, Estimated fair value, Mutual fund	519
Available-for-sale, Estimated fair value, Tax credit investments	0
Available-for-sale Securities, Debt Securities	276,096
Held-to-maturity Securities
Held-to-maturity Securities, Amortized cost, Due in one year or less	184
Held-to-maturity Securities, Amortized cost, Due after one year through five years	10,536
Held-to-maturity Securities, Amortized cost, Due after five years through ten years	112,082
Held-to-maturity Securities, Amortized cost, Due after ten years	31,330
Held-to-maturity Securities, Amortized cost, Mutual fund	0
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	585
Held-to-maturity Securities, Debt Maturities, Net Carrying Amount	154,717	1,320
Held-to-maturity Estimated fair value, Due in one year or less	187
Held-to-maturity, Estimated fair value, Due after one year through five years	10,542
Held-to-maturity Estimated fair value, Due after five years through ten years	112,683
Held-to-maturity Estimated fair value, Due after ten years	31,438
Held-to-maturity Estimated fair value, Mutual fund	0
Invesment Securities held-to-maturity, estimated fair value (in dollars)	585
Estimated fair value	$ 155,435	$ 1,342