Securities (Schedule of Unrealized Loss on Investments) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	27	16
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 20,694	$ 9,974
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(294)	(262)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,439	2,205
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(459)	(451)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	23,133	12,179
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(753)	(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	345	542
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(13)	(27)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	345	3,087
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(13)	(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	3	2
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	1,057	424
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(8)	(9)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	1,057	424
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(8)	(9)
Residential Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	8	6
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	5,747	4,512
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(59)	(80)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	1,220	871
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(139)	(197)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	6,967	5,383
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(198)	(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	345	542
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(13)	(27)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	345	3,087
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(13)	(31)
Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	7
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	4,312
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(45)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	4,312
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(45)
Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	9	8
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	9,578	5,038
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(182)	(173)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	1,219	1,334
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(320)	(254)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	10,797	6,372
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	$ (502)	$ (427)