Loans And Allowance For Loan Losses (Total Average Impaired Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Loans And Allowance For Loan Losses [Line Items]
Non-accrual loans	$ 31,011	$ 43,039	$ 34,257	$ 45,440
Restructured loans (accruing)	33,222	60,912	37,421	60,371
Total	64,233	103,951	71,678	105,811
Commercial Portfolio Segment [Member]
Loans And Allowance For Loan Losses [Line Items]
Non-accrual loans	25,063	35,908	28,155	38,093
Restructured loans (accruing)	14,254	40,167	18,245	39,285
Total	39,317	76,075	46,400	77,378
Personal Banking Portfolio Segment [Member]
Loans And Allowance For Loan Losses [Line Items]
Non-accrual loans	5,948	7,131	6,102	7,347
Restructured loans (accruing)	18,968	20,745	19,176	21,086
Total	$ 24,916	$ 27,876	$ 25,278	$ 28,433