Investment Securities (Available For Sale Securities Continuous Unrealized Loss Position Fair Value) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Investment securities Estimated fair value, Less than 12 months	$ 67,967	$ 40,478
Investment securities Estimated fair value, 12 months or more	46,660	49,472
Investment securities Estimated fair value, Total	114,627	89,950
Investment securities Unrealized losses, Less than 12 months	(650)	(243)
Investment securities Unrealized losses,12 months or more	(859)	(1,102)
Investment securities Unrealized losses, Total	(1,509)	(1,345)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	5,989	3,806
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	5,989	3,806
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(34)	(18)
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	(34)	(18)
U.S. Agency MBS
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Investment securities Estimated fair value, Less than 12 months	7,981	15,807
Investment securities Estimated fair value, 12 months or more	39,762	41,479
Investment securities Estimated fair value, Total	47,743	57,286
Investment securities Unrealized losses, Less than 12 months	(32)	(17)
Investment securities Unrealized losses,12 months or more	(781)	(879)
Investment securities Unrealized losses, Total	(813)	(896)
Non-Agency MBS
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Investment securities Estimated fair value, Less than 12 months	59,328	23,953
Investment securities Estimated fair value, 12 months or more	5,318	6,411
Investment securities Estimated fair value, Total	64,646	30,364
Investment securities Unrealized losses, Less than 12 months	(616)	(220)
Investment securities Unrealized losses,12 months or more	(73)	(187)
Investment securities Unrealized losses, Total	(689)	(407)
U.S. Agency asset-backed securities
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Investment securities Estimated fair value, Less than 12 months	658	718
Investment securities Estimated fair value, 12 months or more	1,580	1,582
Investment securities Estimated fair value, Total	2,238	2,300
Investment securities Unrealized losses, Less than 12 months	(2)	(6)
Investment securities Unrealized losses,12 months or more	(5)	(36)
Investment securities Unrealized losses, Total	(7)	(42)
Obligations of state and political subdivisions
Schedule Of Available-For-Sale and Held-to-Maturity Securities Table [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	5,989	3,806
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	5,989	3,806
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(34)	(18)
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (34)	$ (18)