Loans (Schedule of Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 481,758	$ 455,603
Less allowance for credit losses	(4,935)	(4,906)	$ (4,623)
Net loans	476,823	450,697
Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	28,651	25,993
Less allowance for credit losses	(216)	(269)	(285)
Commercial Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	274,132	257,310
Less allowance for credit losses	(2,375)	(2,300)	(2,010)
Commercial Term [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	102,178	80,819
Less allowance for credit losses	(989)	(709)	(621)
Commercial construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	20,364	35,534
Less allowance for credit losses	(569)	(881)	(1,033)
Consumer: Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	51,270	50,192
Less allowance for credit losses	(195)	(189)	(156)
Consumer: Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,163	5,755
Less allowance for credit losses	$ (64)	$ (70)	$ (78)