Securities (Held to Maturity Securities Losses) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 3,296	$ 2,350
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	0	(54)
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	4,015
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(12)	(1,490)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	3,296	6,365
Held-to-maturity Securities, Continuous Unrealized Loss Position, Unrealized Losses	(12)	(1,544)
Mortgage-Backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	3,296	2,350
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	0	(54)
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	3,515
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(12)	(1,478)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	3,296	5,865
Held-to-maturity Securities, Continuous Unrealized Loss Position, Unrealized Losses	(12)	(1,532)
Obligations of States and Political Subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	500
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	0	(12)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	0	500
Held-to-maturity Securities, Continuous Unrealized Loss Position, Unrealized Losses	$ 0	$ (12)