Basis Of Presentation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Basis Of Presentation [Abstract]
Weighted average shares outstanding (basic)	4,391	4,343	4,375	4,332
Impact of common stock equivalents	21	21	24	21
Weighted average shares outstanding (diluted)	4,412	4,364	4,399	4,353
Net income	$ 4,000	$ 3,076	$ 2,321	$ 9,439
Basic earnings per share	$ 0.91	$ 0.71	$ 0.53	$ 2.18
Diluted earnings per share	$ 0.91	$ 0.70	$ 0.53	$ 2.17