Basis Of Presentation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Basis Of Presentation [Abstract]
Weighted average shares outstanding (basic)	4,343	4,307	4,332	4,295
Impact of common stock equivalents	21	7	21	3
Weighted average shares outstanding (diluted)	4,364	4,314	4,353	4,298
Anti-dilutive options excluded from calculation		9		37
Net income	$ 3,076	$ 2,075	$ 9,439	$ 6,363
Basic earnings per share	$ 0.71	$ 0.48	$ 2.18	$ 1.48
Diluted earnings per share	$ 0.70	$ 0.48	$ 2.17	$ 1.48