Securities (Schedule of Unrealized Loss on Investments) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013 security	Dec. 31, 2012 security
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	42	15
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 28,625	$ 8,109
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(695)	(71)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	4,301	4,945
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(460)	(626)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	32,926	13,054
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(1,155)	(697)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	11	3
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	15,073	838
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(563)	(2)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	162	279
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(4)	(11)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	15,235	1,117
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(567)	(13)
US Government Agencies Debt 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	4,918
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(90)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	4,918
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(90)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	3
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	5,832
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(97)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	5,832
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(97)
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	13
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	8,002
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(307)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	8,002
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(307)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	678
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(3)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	678
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(3)
Residential Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	11	5
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	10,611	3,272
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(213)	(43)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	1,624	1,951
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(81)	(80)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	12,235	5,223
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(294)	(123)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	4	3
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	3,764	838
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(130)	(2)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	162	279
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(4)	(11)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	3,926	1,117
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(134)	(13)
Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	5	4
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	675	2,351
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(2)	(2)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	75
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	750	2,351
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(2)	(2)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	2
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	3,892
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(261)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	3,892
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(261)
Corporate Debt Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	9	6
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	4,419	2,486
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(83)	(26)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,602	2,994
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(379)	(546)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	7,021	5,480
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(462)	(572)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	907
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(72)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	907
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	$ (72)