Loans Receivable And Credit Quality (Allocation For Loan Losses And The Related Portfolio Disaggregated Based On Impairment Methodology) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	$ 6,761	$ 6,619	$ 6,517	$ 6,279	$ 6,209	$ 6,068
Allowance for Loan Losses, Ending balance: individually evaluated for impairment	313		296
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	6,448		6,221
Total Loan Receivables	829,068		798,971
Loans receivables, Ending balance: individually evaluated for impairment	10,334		11,180
Loans receivables, Ending balance: collectively evaluated for impairment	818,734		787,791
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	2,154	2,353	2,349	2,178	2,157	2,132
Allowance for Loan Losses, Ending balance: individually evaluated for impairment	28
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	2,126		2,349
Total Loan Receivables	328,145		321,730
Loans receivables, Ending balance: individually evaluated for impairment	7,573		8,159
Loans receivables, Ending balance: collectively evaluated for impairment	320,572		313,571
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	493	363	423	418	396	402
Allowance for Loan Losses, Ending balance: individually evaluated for impairment	41		64
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	452		359
Total Loan Receivables	39,326		39,045
Loans receivables, Ending balance: individually evaluated for impairment	247		379
Loans receivables, Ending balance: collectively evaluated for impairment	39,079		38,666
Commercial [Member] | Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	473	670	516	427	371	294
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	473		516
Total Loan Receivables	38,597		28,606
Loans receivables, Ending balance: individually evaluated for impairment	315		315
Loans receivables, Ending balance: collectively evaluated for impairment	38,282		28,291
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	3,370	2,968	2,937	2,787	2,581	2,529
Allowance for Loan Losses, Ending balance: individually evaluated for impairment	244		232
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	3,126		2,705
Total Loan Receivables	422,056		408,872
Loans receivables, Ending balance: individually evaluated for impairment	2,199		2,327
Loans receivables, Ending balance: collectively evaluated for impairment	419,857		406,545
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	27	16	15	30	30	29
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	27		15
Total Loan Receivables	944		718
Loans receivables, Ending balance: collectively evaluated for impairment	944		718
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Ending Balance	244	$ 249	277	$ 439	$ 674	$ 682
Allowance for Loan Losses, Ending balance: collectively evaluated for impairment	$ 244		$ 277