Allowance For Loan Losses And Credit Quality Of Financing Receivables (Changes In The Allowance For Loan Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 7,617	$ 7,226	$ 7,210	$ 6,397
Charge-offs	(2,382)	(1,327)	(2,850)	(1,352)
Recoveries	67	525	82	540
Provision	958	1,112	1,818	1,951
Ending balance	6,260	7,536	6,260	7,536
Commercial And Industrial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	305	448	304	436
Charge-offs		(13)		(13)
Recoveries	1	2	2	3
Provision	124	(9)	124	2
Ending balance	430	428	430	428
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	582	1,347	294	1,183
Charge-offs		(909)		(909)
Recoveries		516		516
Provision	(412)	15	(124)	179
Ending balance	170	969	170	969
Commercial Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	5,186	3,953	4,833	3,760
Charge-offs	(2,230)	(394)	(2,525)	(395)
Recoveries	58	1	69	8
Provision	1,533	1,213	2,170	1,400
Ending balance	4,547	4,773	4,547	4,773
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	976	832	987	798
Charge-offs	(123)		(280)	(12)
Provision	202	113	348	159
Ending balance	1,055	945	1,055	945
Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	31	54	9	56
Charge-offs	(29)	(11)	(45)	(23)
Recoveries	8	6	11	13
Provision	1	(4)	36	(1)
Ending balance	11	45	11	45
Unallocated Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	537	592	783	164
Provision	(490)	(216)	(736)	212
Ending balance	$ 47	$ 376	$ 47	$ 376