Allowance For Loan Losses And Credit Quality Of Financing Receivables (Average Recorded Investment And Income Recognized) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Average Recorded Investment	$ 27,716	$ 25,815
Interest Income Recognized	126	204
Impaired Financing Receivable With No Related Allowances [Member]
Average Recorded Investment	12,490	13,492
Interest Income Recognized	62	98
Impaired Financing Receivable With Related Allowances [Member]
Average Recorded Investment	15,226	12,323
Interest Income Recognized	64	106
Commercial And Industrial Loans [Member] | Impaired Financing Receivable With No Related Allowances [Member]
Average Recorded Investment		19
Commercial And Industrial Loans [Member] | Impaired Financing Receivable With Related Allowances [Member]
Average Recorded Investment	127	77
Construction [Member] | Impaired Financing Receivable With No Related Allowances [Member]
Average Recorded Investment	2,293	3,795
Interest Income Recognized		1
Construction [Member] | Impaired Financing Receivable With Related Allowances [Member]
Average Recorded Investment	796	1,941
Commercial Real Estate Loans [Member] | Impaired Financing Receivable With No Related Allowances [Member]
Average Recorded Investment	8,534	8,859
Interest Income Recognized	30	80
Commercial Real Estate Loans [Member] | Impaired Financing Receivable With Related Allowances [Member]
Average Recorded Investment	13,571	9,694
Interest Income Recognized	49	105
Residential Real Estate [Member] | Impaired Financing Receivable With No Related Allowances [Member]
Average Recorded Investment	1,663	816
Interest Income Recognized	32	17
Residential Real Estate [Member] | Impaired Financing Receivable With Related Allowances [Member]
Average Recorded Investment	732	611
Interest Income Recognized	15	1
Consumer And Other [Member] | Impaired Financing Receivable With No Related Allowances [Member]
Average Recorded Investment		$ 3