Summary Of Significant Accounting Policies (Schedule Of Earnings Per Share Basic And Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted average shares outstanding (basic)									4,297	4,244	4,190
Impact of common stock equivalents									5	6	6
Weighted average shares outstanding (diluted)									4,302	4,250	4,196
Anti-dilutive options excluded from calculation									9	27	35
Net income	$ 1,723	$ 2,075	$ 1,561	$ 2,726	$ 2,267	$ 2,579	$ 2,474	$ 2,884	$ 8,087	$ 10,204	$ 8,402
Basic earnings per share	$ 0.40	$ 0.48	$ 0.36	$ 0.64	$ 0.53	$ 0.61	$ 0.58	$ 0.68	$ 1.88	$ 2.40	$ 2.01
Diluted earnings per share	$ 0.40	$ 0.48	$ 0.36	$ 0.64	$ 0.53	$ 0.61	$ 0.58	$ 0.68	$ 1.88	$ 2.40	$ 2.00
Franklin Financial Service Corporation [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income									$ 8,087	$ 10,204	$ 8,402