Securities (Schedule of Unrealized Loss on Investments) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 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	51	15
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 33,818	$ 8,109
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(1,385)	(71)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	4,219	4,945
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(381)	(626)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	38,037	13,054
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(1,766)	(697)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	13	3
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	15,493	838
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(1,098)	(2)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	128	279
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(5)	(11)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	15,621	1,117
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(1,103)	(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	6
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	5,555
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(397)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	5,555
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(397)
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	5,465
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(462)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	5,465
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(462)
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	21
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	10,209
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(584)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	10,209
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(584)
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	659
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(20)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	659
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(20)
Residential Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	14	5
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	15,091	3,272
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(331)	(43)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	1,533	1,951
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(86)	(80)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	16,624	5,223
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(417)	(123)
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	6	3
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	4,730	838
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(145)	(2)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	128	279
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(5)	(11)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	4,858	1,117
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(150)	(13)
Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	2	4
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	531	2,351
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(3)	(2)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	531	2,351
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(3)	(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	3,738
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(391)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	3,738
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(391)
Corporate Debt 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	2,432	2,486
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(70)	(26)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,686	2,994
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	(295)	(546)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	5,118	5,480
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	(365)	(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	901
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	(80)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	901
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	$ (80)