Loans (Summary of TDRs) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Schedule of corporation's TDRs
Total TDRs	$ 101,322	$ 94,943
Commercial Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	77,047	72,214
Consumer Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	24,275	22,729
Performing [Member]
Schedule of corporation's TDRs
Total TDRs	45,664	39,571
Performing [Member] | Commercial Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	29,179	26,839
Performing [Member] | Consumer Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	16,485	12,732
Nonperforming [Member]
Schedule of corporation's TDRs
Total TDRs	18,467	18,090
Nonperforming [Member] | Commercial Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	15,271	13,414
Nonperforming [Member] | Consumer Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	3,196	4,676
Substandard Nonaccrual [Member]
Schedule of corporation's TDRs
Total TDRs	37,191	37,282
Substandard Nonaccrual [Member] | Commercial Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	32,597	31,961
Substandard Nonaccrual [Member] | Consumer Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	$ 4,594	$ 5,321