Securities (Schedule of Unrealized Loss on Investments) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	17	16
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 5,979	$ 9,974
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(73)	(262)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	5,191	2,205
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(672)	(451)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	11,170	12,179
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(745)	(713)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1	3
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		2,545
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses		(4)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	333	542
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(9)	(27)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	333	3,087
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(9)	(31)
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	2	2
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	779	424
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(4)	(9)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	779	424
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(4)	(9)
Residential Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	6	6
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	2,637	4,512
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(24)	(80)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,212	871
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(112)	(197)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	4,849	5,383
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(136)	(277)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1	3
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		2,545
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses		(4)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	333	542
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(9)	(27)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	333	3,087
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(9)	(31)
Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	4
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	1,527
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(11)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	1,527
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(11)
Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	5	8
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	1,036	5,038
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(34)	(173)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,979	1,334
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(560)	(254)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	4,015	6,372
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	$ (594)	$ (427)