Allowance For Loan Losses And Credit Quality Of Financing Receivables (Troubled Debt Restructured On Recorded Investment) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Modifications [Line Items]
Total	$ 2,671	$ 8,282
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	2,432	8,274
Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Total	6	8
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	233
Performing [Member]
Financing Receivable, Modifications [Line Items]
Total	608	5,600
Performing [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	603	5,592
Performing [Member] | Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Total		8
Performing [Member] | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	5
Non-performing [Member]
Financing Receivable, Modifications [Line Items]
Total	2,063	2,682
Non-performing [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	1,829	2,682
Non-performing [Member] | Commercial And Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Total	6
Non-performing [Member] | Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total	$ 228