Accumulated Other Comprehensive Income (Schedule Of Reclassifications From Accumulated Other Comprehensive Income) (Details) - USD ($) $ 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, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain on sale of investment securities			$ 9		$ 54	$ 8	$ 16	$ 2	$ 298		$ 94	$ 207	$ 9	$ 80	$ 599
Provision for income taxes	$ (738)	$ (776)	(669)	$ (586)	(634)	(687)	50	(547)	(555)	$ (562)	(557)	(492)	(2,769)	(1,818)	(2,166)
Net income	$ 2,029	$ 2,035	$ 1,928	$ 1,701	$ 1,821	$ 1,929	$ 1,780	$ 1,573	$ 1,638	$ 1,631	$ 1,627	$ 1,456	7,693	7,103	6,352
Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Provision for income taxes													(3)	(27)	(204)
Net income													6	53	395
Unrealized Gains (Losses) On Available-For-Sale Securities [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain on sale of investment securities													$ 9	$ 80	$ 599