Allowance for Credit Losses (Age Analysis Of Past Due Loans Receivables) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	$ 8,022	$ 10,189
Current	808,503	807,340
Total Loans Receivables	816,525	817,529
Loans Receivable >90 Days and Accruing			$ 162
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	2,897	3,468
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	350	1,661
Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	4,775	5,060
Residential Mortgage (Less Acquired With Credit Deterioration) [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	2,651	1,593
Current	83,970	85,977
Total Loans Receivables	86,621	87,570
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	1,626	728
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	164	374
Residential Mortgage (Less Acquired With Credit Deterioration) [Member] | Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	861	491
Acquired Residential Mortgage With Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	11	11
Total Loans Receivables	11	11
Acquired Residential Mortgage With Credit Deterioration [Member] | Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	11	11
Commercial Mortgage (Less Acquired With Credit Deterioration) [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	985	4,133
Current	451,133	459,679
Total Loans Receivables	452,118	463,812
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		1,202
Commercial 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		762
Commercial Mortgage (Less Acquired With Credit Deterioration) [Member] | Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	985	2,169
Acquired Commercial Mortgage With Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	620	1,145
Current	715	529
Total Loans Receivables	1,335	1,674
Acquired Commercial Mortgage With Credit Deterioration [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables		389
Acquired Commercial Mortgage With Credit Deterioration [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables		83
Acquired Commercial Mortgage With Credit Deterioration [Member] | Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	620	673
Commercial Term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	1,378	1,147
Current	117,112	122,028
Total Loans Receivables	118,490	123,175
Commercial Term [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables		747
Commercial Term [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables		377
Commercial Term [Member] | Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	1,378	23
Commercial Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	1,488	1,354
Current	90,669	71,401
Total Loans Receivables	92,157	72,755
Commercial Construction [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	1,041	112
Commercial Construction [Member] | Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	447	1,242
Consumer: Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	609	563
Current	59,220	61,997
Total Loans Receivables	59,829	62,560
Consumer: Home Equity [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	222	263
Consumer: Home Equity [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	87
Consumer: Home Equity [Member] | Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	300	300
Consumer: Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	280	243
Current	5,684	5,729
Total Loans Receivables	5,964	5,972
Consumer: Other [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	8	27
Consumer: Other [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	99	65
Consumer: Other [Member] | Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans receivables	$ 173	$ 151