Securities (Details 5) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012
Schedule of the contractual maturity of securities available for sale, excluding equity securities
1 year or less, Amortized Cost	$ 19,219
1 year - 5 years, Amortized Cost	83,538
5 years - 10 years, Amortized Cost	141,782
After 10 years, Amortized Cost	97,478
Total, Amortized Cost	342,017
Total debt securities, Amortized Cost	693,033
1 year or less, Fair Value	19,390
1 year - 5 years, Fair Value	86,308
5 years - 10 years, Fair Value	152,522
After 10 years, Fair Value	99,761
Total, Fair Value	357,981
Total debt securities, Fair Value	717,732
Residential mortgage & asset backed [Member]
Schedule of the contractual maturity of securities available for sale, excluding equity securities
Mortgage & asset backed securities, Amortized Cost	349,141
Mortgage & asset backed securities, Fair Value	357,804
Commercial mortgage & asset backed securities [Member]
Schedule of the contractual maturity of securities available for sale, excluding equity securities
Mortgage & asset backed securities, Amortized Cost	1,875
Mortgage & asset backed securities, Fair Value	$ 1,947

Available for sale securities debt maturities debt securities fair value.

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