Loans (Schedule Of Troubled Debt Restructurings Modified In 2011) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Financing Receivable, Modifications [Line Items]
Number of Contracts	19
Pre-Modification Outstanding Recorded Investment	$ 67,611
Post-Modification Outstanding Recorded Investment	52,415
Specific Reserve	219
Charge-off	15,196
Commercial Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	7
Pre-Modification Outstanding Recorded Investment	15,025
Post-Modification Outstanding Recorded Investment	15,025
Specific Reserve	104
Real Estate Construction Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	3
Pre-Modification Outstanding Recorded Investment	33,669
Post-Modification Outstanding Recorded Investment	21,522
Charge-off	12,147
Commercial Mortgage Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	6
Pre-Modification Outstanding Recorded Investment	17,343
Post-Modification Outstanding Recorded Investment	14,294
Specific Reserve	1
Charge-off	3,049
Residential Mortgage And Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	3
Pre-Modification Outstanding Recorded Investment	1,574
Post-Modification Outstanding Recorded Investment	1,574
Specific Reserve	$ 114