Summary Of Significant Accounting Policies (Schedule Of Earnings Per Share Basic And Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Summary Of Significant Accounting Policies [Abstract]
Weighted average shares outstanding (basic)	4,420	4,357
Impact of common stock equivalents	20	9
Weighted average shares outstanding (diluted)	4,440	4,366
Anti-dilutive options excluded from calculation	30	71
Net income	$ 19,616	$ 12,800
Basic earnings per share	$ 4.44	$ 2.94
Diluted earnings per share	$ 4.42	$ 2.93