Loans And The Allowance For Credit Losses (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Y	Jun. 30, 2011	Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	$ 1,025,665,000	$ 943,350,000	$ 1,025,665,000	$ 943,350,000	$ 1,027,626,000
Net deferred loan origination fees			(30,000)		11,000
Overdrawn deposit balances classified as loan balances	356,000		356,000		399,000
Percentage of loans originated in amounts of the appraised value of the property	80.00%		80.00%
Net loan losses, weighted average determination period, years			5
Nonaccrual loans	2,704,000		2,704,000		2,177,000
Total impaired loans	3,130,000	3,444,000	3,130,000	3,444,000	2,511,000
Impaired loans with specific reserve allocation	578,000		578,000		885,000
Impaired loans with no specific reserve allocation	2,550,000		2,550,000		1,630,000
Interest Income Recognized	46,000	4,000	51,000	7,000
Average balance of impaired loans	2,440,000	3,512,000	2,434,000	3,637,000
Related allowance	204,000	209,000	204,000	209,000	227,000
Nonaccruing Troubled Debt Restructuring	145,000		145,000		224,000
Troubled debt restructured loans ("TDRs")	571,000		571,000		558,000
Number of loans	9		9
Interest income on restructured loans	18,000	1,000	22,000	4,000
OREO balance	386,000	0	386,000	0	358,000
Amount of interest which was not earned, but which would have been earned had our nonaccrual and restructured loans	33,000	55,000	69,000	108,000
Real Estate Loans – Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	464,202,000	418,246,000	464,202,000	418,246,000
Total impaired loans	2,479,000	2,199,000	2,479,000	2,199,000
Interest Income Recognized	43,000	4,000	47,000	7,000
Average balance of impaired loans	1,831,000	2,235,000	1,857,000	2,261,000
Related allowance	201,000	79,000	201,000	79,000
Number of loans	8	3	8	3
Real Estate Loans – Residential [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	425,540,000		425,540,000		401,331,000
Nonaccrual loans	1,186,000		1,186,000		1,146,000
Nonaccruing Troubled Debt Restructuring	25,000		25,000
Troubled debt restructured loans ("TDRs")					297,000
Real Estate Loans – Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	329,698,000	304,347,000	329,698,000	304,347,000
Total impaired loans	582,000	656,000	582,000	656,000
Interest Income Recognized	2,000	0	3,000	0
Average balance of impaired loans	531,000	665,000	487,000	635,000
Related allowance	0	0	0	0
Number of loans	1		1
Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loans	6		6
Payment Default [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loans	7		7
Payment Default With Foreclusure Proceedings In Process [Member] | Real Estate Loans – Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Troubled debt restructured loans ("TDRs")	145,000		145,000
Number of loans	3		3
Paid Off [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Troubled debt restructured loans ("TDRs")	207,000		207,000
Number of loans	1		1
Restructured With Longer Terms At Market Rates [Member] | Real Estate Loans – Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loans		1		1
Restructured With Rate Concessions [Member] | Real Estate Loans – Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loans		2		2
Restructured [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	$ 2,330,000		$ 2,330,000		$ 1,600,000
Number of loans		1		1