Allowance for Credit Losses (Age Analysis Of Past Due Loans Receivables) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	$ 6,273	$ 6,030
Current	927,424	928,941
Total Loans Receivables	933,697	934,971
Loans Receivable >90 Days and Accruing		233
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	3,429	1,110
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	348	1,923
Greater than 90 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	2,496	2,997
Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	3,707
Current	97,332
Total Loans Receivables	101,039	99,932
Residential Mortgage [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	2,753
Residential Mortgage [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	348
Residential Mortgage [Member] | Greater than 90 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	606
Residential Mortgage (Less Acquired With Credit Deterioration) [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables		3,253
Current		96,679
Total Loans Receivables		99,932
Loans Receivable >90 Days and Accruing		130
Residential Mortgage (Less Acquired With Credit Deterioration) [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables		666
Residential Mortgage (Less Acquired With Credit Deterioration) [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables		1,742
Residential Mortgage (Less Acquired With Credit Deterioration) [Member] | Greater than 90 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables		845
Commercial Mortgage (Less Acquired With Credit Deterioration) [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	968	840
Current	515,763	534,739
Total Loans Receivables	516,731	535,579
Loans Receivable >90 Days and Accruing		103
Commercial Mortgage (Less Acquired With Credit Deterioration) [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	309
Commercial Mortgage (Less Acquired With Credit Deterioration) [Member] | Greater than 90 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	659	840
Acquired Commercial Mortgage With Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	505	156
Total Loans Receivables	505	156
Commercial Term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	754	1,014
Current	181,323	165,321
Total Loans Receivables	182,077	166,335
Commercial Term [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	6	20
Commercial Term [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables		37
Commercial Term [Member] | Greater than 90 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	748	957
Commercial Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	78,967	76,302
Total Loans Receivables	78,967	76,302
Consumer: Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	675	789
Current	48,737	50,747
Total Loans Receivables	49,412	51,536
Consumer: Home Equity [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	284	398
Consumer: Home Equity [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables		144
Consumer: Home Equity [Member] | Greater than 90 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	391	247
Consumer: Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	169	134
Current	4,797	4,997
Total Loans Receivables	4,966	5,131
Consumer: Other [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	77	26
Consumer: Other [Member] | Greater than 90 Days [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	$ 92	$ 108