Allowance For Loan Losses And Credit Quality Of Financing Receivables (Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 24,889	[1]	$ 27,746	[1]
Unpaid Principal Balance	28,711	[2]	30,571	[2]
Related Allowance	2,233		1,957
Impaired Financing Receivable With No Related Allowances [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	10,191	[1]	14,182	[1]
Unpaid Principal Balance	11,923	[2]	17,020	[2]
Impaired Financing Receivable With No Related Allowances [Member] | Commercial And Industrial Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment		[1]		[1]
Unpaid Principal Balance		[2]		[2]
Related Allowance
Impaired Financing Receivable With No Related Allowances [Member] | Construction [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	2,134	[1]	2,062	[1]
Unpaid Principal Balance	3,111	[2]	2,331	[2]
Impaired Financing Receivable With No Related Allowances [Member] | Commercial Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	6,209	[1]	10,362	[1]
Unpaid Principal Balance	6,970	[2]	12,932	[2]
Impaired Financing Receivable With No Related Allowances [Member] | Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,848	[1]	1,758	[1]
Unpaid Principal Balance	1,842	[2]	1,757	[2]
Impaired Financing Receivable With Related Allowances [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	14,698	[1]	13,564	[1]
Unpaid Principal Balance	16,788	[2]	13,551	[2]
Related Allowance	2,233		1,957
Impaired Financing Receivable With Related Allowances [Member] | Commercial And Industrial Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	401	[1]	32	[1]
Unpaid Principal Balance	396	[2]	32	[2]
Related Allowance	200		16
Impaired Financing Receivable With Related Allowances [Member] | Construction [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,391	[1]	396	[1]
Unpaid Principal Balance	1,395	[2]	396	[2]
Related Allowance	112		50
Impaired Financing Receivable With Related Allowances [Member] | Commercial Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	11,832	[1]	12,404	[1]
Unpaid Principal Balance	13,930	[2]	12,399	[2]
Related Allowance	1,614		1,572
Impaired Financing Receivable With Related Allowances [Member] | Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	1,074	[1]	732	[1]
Unpaid Principal Balance	1,067	[2]	724	[2]
Related Allowance	$ 307		$ 319

[1] The recorded investment of impaired loans includes the outstanding principal balance and any unpaid interest and escrow balances due

[2] Unpaid principal balance includes the present recorded principal balance plus any amounts that have been previously charged-off.