Loans (Summary of TDRs) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule of corporation's TDRs
Total TDRs	$ 103,111	$ 101,322
Commercial Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	78,823	77,047
Consumer Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	24,288	24,275
Performing [Member]
Schedule of corporation's TDRs
Total TDRs	47,810	45,664
Performing [Member] | Commercial Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	29,844	29,179
Performing [Member] | Consumer Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	17,966	16,485
Nonperforming [Member]
Schedule of corporation's TDRs
Total TDRs	19,368	18,467
Nonperforming [Member] | Commercial Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	16,297	15,271
Nonperforming [Member] | Consumer Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	3,071	3,196
Substandard Nonaccrual [Member]
Schedule of corporation's TDRs
Total TDRs	35,933	37,191
Substandard Nonaccrual [Member] | Commercial Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	32,682	32,597
Substandard Nonaccrual [Member] | Consumer Loan Portfolio [Member]
Schedule of corporation's TDRs
Total TDRs	$ 3,251	$ 4,594