Allowance For Loan Losses And Credit Quality Of Financing Receivables (Allowances Of Loan Losses And Loans Receivable By Class Disaggregated) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Allowance for Loan Losses	$ 6,260	$ 7,617	$ 7,210	$ 7,536	$ 7,226	$ 6,397
Allowance for Loan Losses, Balance Related to Loans Individually Evaluated for Impairment	2,233		1,957
Allowance for Loan Losses, Balance Related to Loans Collectively Evaluated for Impairment	3,980		4,470
Balance, Loans Receivable	347,214		339,933
Loans Receivable, Individually Evaluated for Impairment	24,846		27,694
Loans Receivable, Collectively Evaluated for Impairment	322,368		312,239
Commercial And Industrial Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Allowance for Loan Losses	430	305	304	428	448	436
Allowance for Loan Losses, Balance Related to Loans Individually Evaluated for Impairment	200		16
Allowance for Loan Losses, Balance Related to Loans Collectively Evaluated for Impairment	230		288
Balance, Loans Receivable	13,106		13,711
Loans Receivable, Individually Evaluated for Impairment	396		32
Loans Receivable, Collectively Evaluated for Impairment	12,710		13,679
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Allowance for Loan Losses	170	582	294	969	1,347	1,183
Allowance for Loan Losses, Balance Related to Loans Individually Evaluated for Impairment	112		50
Allowance for Loan Losses, Balance Related to Loans Collectively Evaluated for Impairment	58		244
Balance, Loans Receivable	7,103		8,520
Loans Receivable, Individually Evaluated for Impairment	3,529		2,458
Loans Receivable, Collectively Evaluated for Impairment	3,574		6,062
Commercial Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Allowance for Loan Losses	4,547	5,186	4,833	4,773	3,953	3,760
Allowance for Loan Losses, Balance Related to Loans Individually Evaluated for Impairment	1,614		1,572
Allowance for Loan Losses, Balance Related to Loans Collectively Evaluated for Impairment	2,933		3,261
Balance, Loans Receivable	228,042		216,191
Loans Receivable, Individually Evaluated for Impairment	18,013		22,722
Loans Receivable, Collectively Evaluated for Impairment	210,029		193,469
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Allowance for Loan Losses	1,055	976	987	945	832	798
Allowance for Loan Losses, Balance Related to Loans Individually Evaluated for Impairment	307		319
Allowance for Loan Losses, Balance Related to Loans Collectively Evaluated for Impairment	748		668
Balance, Loans Receivable	97,635		100,175
Loans Receivable, Individually Evaluated for Impairment	2,908		2,482
Loans Receivable, Collectively Evaluated for Impairment	94,727		97,693
Consumer And Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Allowance for Loan Losses	11		9
Allowance for Loan Losses, Balance Related to Loans Collectively Evaluated for Impairment	11		9
Balance, Loans Receivable	1,328		1,336
Loans Receivable, Collectively Evaluated for Impairment	1,328		1,336
Unallocated Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Allowance for Loan Losses	$ 47	$ 537	$ 783	$ 376	$ 592	$ 164