Parent Company (Franklin Financial Services Corporation) Financial Information (Schedule Of Condensed Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents, Carrying Amount	$ 48,593	$ 40,745	$ 77,834	$ 34,144
Available for sale	171,751	159,674
Other Assets	8,522	10,660
Total assets	1,001,448	984,587
Other Liabilities	7,667	7,238
Total liabilities	897,927	889,199
Shareholders' equity	103,521	95,388	91,634	87,182
Total liabilities and shareholders' equity	1,001,448	984,587
Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents, Carrying Amount	414	601	375	419
Available for sale		914
Equity investment in subsidiaries	101,784	91,746
Other Assets	1,323	2,235
Total assets	103,521	95,496
Other Liabilities		108
Total liabilities		108
Shareholders' equity	103,521	95,388
Total liabilities and shareholders' equity	$ 103,521	$ 95,496