Loans (Schedule of Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 489,366	$ 481,758
Less allowance for credit losses	(5,172)	(4,935)	$ (5,190)	$ (4,906)
Net loans	484,194	476,823
Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	27,560	28,651
Less allowance for credit losses	(220)	(216)	(269)	(269)
Commercial Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	274,372	274,132
Less allowance for credit losses	(2,376)	(2,375)	(2,398)	(2,300)
Commercial Term [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	107,232	102,178
Less allowance for credit losses	(948)	(989)	(705)	(709)
Commercial Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	24,833	20,364
Less allowance for credit losses	(765)	(569)	(922)	(881)
Consumer: Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	49,545	51,270
Less allowance for credit losses	(188)	(195)	(224)	(189)
Consumer: Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,824	5,163
Less allowance for credit losses	$ (67)	$ (64)	$ (66)	$ (70)