Investment Securities (Amortized Cost and Fair Value of Available-for-Sale Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Security obligations due, amortized cost, within one year	$ 4,488
Security obligations due, amortized cost, One to five years	14,491
Security obligations due, amortized cost, Five to ten years	2,214
Security obligations due, amortized cost, After ten years	44,142
Total security obligations due, amortized cost	65,335
Available for sale, amortized cost	259,995	$ 256,790
Security obligations due, Fair Value, within one year	4,509
Security obligations due, Fair value, One to five years	14,577
Security obligations due, Fair value, Five to ten years	2,373
Security obligations due, Fair value, After ten years	43,681
Total Security obligations due, Fair value	65,140
Investment securities available for sale	261,506	260,806
Mortgage-backed Securities, Government Sponsored Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, amortized cost	109,031	110,452
Investment securities available for sale	110,595	113,290
Collateralized Mortgage Obligations, Government Sponsored Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, amortized cost	85,629	97,325
Investment securities available for sale	$ 85,771	$ 97,759