Allowance For Loan Losses And Credit Quality Of Financing Receivables (Loans Which The Accrual Of Interest Has Been Discontinued) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 17,867	$ 24,283
Commercial And Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	27	32
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,462	2,458
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	12,062	19,311
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,315	2,482
Consumer And Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 1