Loan Quality And Allowance For Loan Losses (Aging Of Payments Of The Loan Portfolio) (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	$ 1,545,000	$ 871,000
Non-accrual loans	8,748,000	8,704,000
Total Loans	999,035,000	1,009,704,000
Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	988,742,000	1,000,129,000
30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	1,449,000	489,000
60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	22,000	344,000
90 Days+ Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	74,000	38,000
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	529,000	265,000
Non-accrual loans	41,000	51,000
Total Loans	203,250,000	202,584,000
Residential Real Estate [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	202,680,000	202,268,000
Residential Real Estate [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	435,000	158,000
Residential Real Estate [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	20,000	81,000
Residential Real Estate [Member] | 90 Days+ Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	74,000	26,000
Residential Real Estate [Member] | First Liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	243,000	127,000
Non-accrual loans	41,000	41,000
Total Loans	135,037,000	137,224,000
Residential Real Estate [Member] | First Liens [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	134,753,000	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	223,000	43,000
Residential Real Estate [Member] | First Liens [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	20,000	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	286,000	138,000
Non-accrual loans		10,000
Total Loans	68,213,000	65,360,000
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	67,927,000	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	212,000	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 [Member] | Junior Liens & Lines Of Credit [Member] | 90 Days+ Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	74,000
Residential Real Estate - Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual loans	430,000	512,000
Total Loans	20,204,000	16,309,000
Residential Real Estate - Construction [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	19,774,000	15,797,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	706,000	335,000
Non-accrual loans	8,172,000	8,033,000
Total Loans	495,407,000	503,977,000
Commercial Real Estate [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	486,529,000	495,609,000
Commercial Real Estate [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	706,000	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	279,000	219,000
Non-accrual loans	105,000	108,000
Total Loans	273,146,000	281,257,000
Commercial [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	272,762,000	280,930,000
Commercial [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	279,000	219,000
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	31,000	52,000
Total Loans	7,028,000	5,577,000
Consumer [Member] | Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	6,997,000	5,525,000
Consumer [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	29,000	38,000
Consumer [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans	$ 2,000	2,000
Consumer [Member] | 90 Days+ Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans		$ 12,000