Loan Quality And Allowance For Loan Losses (Aging Of Payments Of The Loan Portfolio) (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	$ 397,000	$ 871,000
Non-accrual loans	8,632,000	8,704,000
Total Loans	1,018,168,000	1,009,704,000
Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	1,009,139,000	1,000,129,000
30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	162,000	489,000
60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	232,000	344,000
90 Days+ Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	3,000	38,000
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	319,000	265,000
Non-accrual loans	79,000	51,000
Total Loans	204,501,000	202,584,000
Residential Real Estate [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	204,103,000	202,268,000
Residential Real Estate [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	88,000	158,000
Residential Real Estate [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	231,000	81,000
Residential Real Estate [Member] | 90 Days+ Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans		26,000
Residential Real Estate [Member] | First Liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	240,000	127,000
Non-accrual loans	41,000	41,000
Total Loans	134,279,000	137,224,000
Residential Real Estate [Member] | First Liens [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	133,998,000	137,056,000
Residential Real Estate [Member] | First Liens [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	9,000	43,000
Residential Real Estate [Member] | First Liens [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	231,000	58,000
Residential Real Estate [Member] | First Liens [Member] | 90 Days+ Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans		26,000
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	79,000	138,000
Non-accrual loans	38,000	10,000
Total Loans	70,222,000	65,360,000
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	70,105,000	65,212,000
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	79,000	115,000
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans		23,000
Residential Real Estate - Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	426,000	512,000
Total Loans	22,078,000	16,309,000
Residential Real Estate - Construction [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	21,652,000	15,797,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans		335,000
Non-accrual loans	8,027,000	8,033,000
Total Loans	527,092,000	503,977,000
Commercial Real Estate [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	519,065,000	495,609,000
Commercial Real Estate [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans		74,000
Commercial Real Estate [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans		261,000
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	53,000	219,000
Non-accrual loans	100,000	108,000
Total Loans	257,693,000	281,257,000
Commercial [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	257,540,000	280,930,000
Commercial [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	53,000	219,000
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	25,000	52,000
Total Loans	6,804,000	5,577,000
Consumer [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	6,779,000	5,525,000
Consumer [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	21,000	38,000
Consumer [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	1,000	2,000
Consumer [Member] | 90 Days+ Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	$ 3,000	$ 12,000