Loans Receivable And Credit Quality (Troubled Debt Restructuring Outstanding) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Modifications [Line Items]
Total Modifications	$ 3,017	$ 4,757
Accrual Loans [Member]
Financing Receivable, Modifications [Line Items]
Total Modifications	2,991	4,705
Non-Accrual Loans [Member]
Financing Receivable, Modifications [Line Items]
Total Modifications	26	52
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total Modifications	1,316	3,002
Commercial Real Estate [Member] | Accrual Loans [Member]
Financing Receivable, Modifications [Line Items]
Total Modifications	1,316	3,002
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Total Modifications	243	245
Commercial [Member] | Accrual Loans [Member]
Financing Receivable, Modifications [Line Items]
Total Modifications	243	245
Commercial [Member] | Construction [Member]
Financing Receivable, Modifications [Line Items]
Total Modifications	260	260
Commercial [Member] | Construction [Member] | Accrual Loans [Member]
Financing Receivable, Modifications [Line Items]
Total Modifications	260	260
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Total Modifications	1,198	1,250
Residential Real Estate [Member] | Accrual Loans [Member]
Financing Receivable, Modifications [Line Items]
Total Modifications	1,172	1,198
Residential Real Estate [Member] | Non-Accrual Loans [Member]
Financing Receivable, Modifications [Line Items]
Total Modifications	$ 26	$ 52