Loans Receivable And Credit Quality (Allocation Of Allowance For Loan Losses And Related Loan Portfolio) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	$ 7,473	$ 7,266	$ 7,040	$ 6,761	$ 6,619	$ 6,517
Allowance for Loan Losses, Ending balance: individually evaluated for impairment	207		251
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	7,266		6,789
Total Loan Receivables	924,675		858,293
Loans receivables, Ending balance: individually evaluated for impairment	8,443		9,972
Loans receivables, Ending balance: collectively evaluated for impairment	916,232		848,321
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	2,381	2,456	2,251	2,154	2,353	2,349
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	2,381		2,251
Total Loan Receivables	396,667		347,292
Loans receivables, Ending balance: individually evaluated for impairment	5,972		7,383
Loans receivables, Ending balance: collectively evaluated for impairment	390,695		339,909
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	420	475	472	493	363	423
Allowance for Loan Losses, Ending balance: individually evaluated for impairment	36		39
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	384		433
Total Loan Receivables	40,130		36,406
Loans receivables, Ending balance: individually evaluated for impairment	315		245
Loans receivables, Ending balance: collectively evaluated for impairment	39,815		36,161
Commercial [Member] | Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	158	249	369	473	670	516
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	158		369
Total Loan Receivables	22,390		30,090
Loans receivables, Ending balance: individually evaluated for impairment	315		315
Loans receivables, Ending balance: collectively evaluated for impairment	22,075		29,775
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	3,793	3,508	3,510	3,370	2,968	2,937
Allowance for Loan Losses, Ending balance: individually evaluated for impairment	171		212
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	3,622		3,298
Total Loan Receivables	464,783		443,601
Loans receivables, Ending balance: individually evaluated for impairment	1,841		2,029
Loans receivables, Ending balance: collectively evaluated for impairment	462,942		441,572
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	27	22	18	27	16	15
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	27		18
Total Loan Receivables	705		904
Loans receivables, Ending balance: collectively evaluated for impairment	705		904
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	694	$ 556	420	$ 244	$ 249	$ 277
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	$ 694		$ 420