Allowance For Loan Losses And Credit Quality Of Financing Receivables (An Age Analysis Of Loans Receivable) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable 30-59 days past due	$ 4,307		$ 7,181
Loans receivable 60-89 days past due	3,468		138
Loans receivable greater than 90 days past due	24,361	[1]	25,086	[1]
Total past due	32,136		32,405
Loans receivable current	315,078		307,528
Total financing receivables	347,214		339,933
Recorded investment greater that 90 days and accruing	118		803
Commercial And Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable 30-59 days past due	22		428
Loans receivable 60-89 days past due	111
Loans receivable greater than 90 days past due	396	[1]	32	[1]
Total past due	529		460
Loans receivable current	12,577		13,251
Total financing receivables	13,106		13,711
Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable 30-59 days past due			558
Loans receivable greater than 90 days past due	3,647	[1]	3,243	[1]
Total past due	3,647		3,801
Loans receivable current	3,456		4,719
Total financing receivables	7,103		8,520
Recorded investment greater that 90 days and accruing	118		785
Commercial Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable 30-59 days past due	3,004		5,238
Loans receivable 60-89 days past due	2,802		137
Loans receivable greater than 90 days past due	17,410	[1]	19,311	[1]
Total past due	23,216		24,686
Loans receivable current	204,826		191,505
Total financing receivables	228,042		216,191
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable 30-59 days past due	1,268		940
Loans receivable 60-89 days past due	551
Loans receivable greater than 90 days past due	2,908	[1]	2,482	[1]
Total past due	4,727		3,422
Loans receivable current	92,908		96,753
Total financing receivables	97,635		100,175
Consumer And Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable 30-59 days past due	13		17
Loans receivable 60-89 days past due	4		1
Loans receivable greater than 90 days past due			18	[1]
Total past due	17		36
Loans receivable current	1,311		1,300
Total financing receivables	1,328		1,336
Recorded investment greater that 90 days and accruing			$ 18

[1] includes loans greater than 90 days past due and still accruing and non-accrual loans