Basis Of Presentation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Basis Of Presentation [Abstract]
Weighted average shares outstanding (basic)	4,396	4,347
Impact of common stock equivalents	19	14
Weighted average shares outstanding (diluted)	4,415	4,361
Anti-dilutive options excluded from calculation	61	50
Net income	$ 4,830	$ 1,719
Basic earnings per share	$ 1.10	$ 0.40
Diluted earnings per share	$ 1.09	$ 0.39