Securities (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Available for Sale, Amortized Cost
Available for Sale, Amortized Cost, Due in one year or less	$ 3
Available for Sale, Amortized Cost, Due after one year to five years	9,151
Available for Sale, Amortized Cost, Due after five to ten years	81,624
Available for Sale, Amortized Cost, Due after ten years	183,051
Available for Sale, Amortized Cost, Total debt securities	273,829
Available for Sale, Amortized Cost, Marketable equity securities	10,756
Available for Sale, Amortized Cost, Total	284,585	320,556
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	3
Available for Sale, Fair Value, Due after one year to five years	9,647
Available for Sale, Fair Value, Due after five to ten years	80,651
Available for Sale, Fair Value, Due after ten years	182,921
Available for Sale, Fair Value, Net debt securities	273,222
Available for Sale, Fair Value, Marketable equity securities	11,176
Available for sale Securities, Fair Value, Total	284,398	329,286
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	254
Held to Maturity, Amortized Cost, Due after one year to five years	5,936
Held to Maturity, Amortized Cost, Due after five to ten years	18,052
Held to Maturity, Amortized Cost, Due after ten years	293,131
Held to Maturity, Amortized Cost, Net debt securities	317,373	178,318
Held to Maturity, Amortized Cost, Marketable equity securities
Held to Maturity, Amortized Cost, Net	317,373	178,318
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	256
Held to Maturity, Fair Value, Due after one year to five years	6,192
Held to Maturity, Fair Value, Due after five to ten years	18,188
Held to Maturity, Fair Value, Due after ten years	291,961
Held to Maturity, Fair Value, Total	316,597	185,824
Held to Maturity, Fair Value, Marketable equity securities