Loans And Allowance For Loan Losses (Total Average Impaired Loans) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Loans And Allowance For Loan Losses [Line Items]
Non-accrual loans	$ 25,627	$ 37,539
Restructured loans (accruing)	44,880	41,666
Total	70,507	79,205
Commercial Portfolio Segment [Member]
Loans And Allowance For Loan Losses [Line Items]
Non-accrual loans	21,004	31,281
Restructured loans (accruing)	27,179	22,280
Total	48,183	53,561
Personal Banking Portfolio Segment [Member]
Loans And Allowance For Loan Losses [Line Items]
Non-accrual loans	4,623	6,258
Restructured loans (accruing)	17,701	19,386
Total	$ 22,324	$ 25,644