Loans (Details 7) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Schedule of corporation's TDRs
Total	$ 42,172	$ 44,452	$ 39,724
Commercial Loan Portfolio [Member]
Schedule of corporation's TDRs
Total	23,773	19,440	17,568
Consumer Loan Portfolio [Member]
Schedule of corporation's TDRs
Total	18,399	25,012	22,156
Performing [Member]
Schedule of corporation's TDRs
Total	26,383	20,394	12,889
Performing [Member] | Commercial Loan Portfolio [Member]
Schedule of corporation's TDRs
Total	12,082	4,765	2,125
Performing [Member] | Consumer Loan Portfolio [Member]
Schedule of corporation's TDRs
Total	14,301	15,629	10,764
Nonperforming [Member]
Schedule of corporation's TDRs
Total	15,789	24,058	26,835
Nonperforming [Member] | Commercial Loan Portfolio [Member]
Schedule of corporation's TDRs
Total	11,691	14,675	15,443
Nonperforming [Member] | Consumer Loan Portfolio [Member]
Schedule of corporation's TDRs
Total	$ 4,098	$ 9,383	$ 11,392