Loans And Allowance For Loan Losses (Total Average Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Loans And Allowance For Loan Losses [Line Items]
Non-accrual loans	$ 43,039	$ 41,333	$ 45,440	$ 44,234
Restructured loans (accruing)	60,912	66,194	60,371	66,064
Total	103,951	107,527	105,811	110,298
Commercial Portfolio Segment [Member]
Loans And Allowance For Loan Losses [Line Items]
Non-accrual loans	35,908	36,384	38,093	38,733
Restructured loans (accruing)	40,167	41,053	39,285	39,854
Total	76,075	77,437	77,378	78,587
Personal Banking Portfolio Segment [Member]
Loans And Allowance For Loan Losses [Line Items]
Non-accrual loans	7,131	4,949	7,347	5,501
Restructured loans (accruing)	20,745	25,141	21,086	26,210
Total	$ 27,876	$ 30,090	$ 28,433	$ 31,711