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Basis Of Presentation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Basis Of Presentation [Abstract]
Weighted average shares outstanding (basic)	4,425	4,345	4,411	4,346
Impact of common stock equivalents	19	5	21	8
Weighted average shares outstanding (diluted)	4,444	4,350	4,432	4,354
Anti-dilutive options excluded from calculation	30	80	61	80
Net income	$ 5,271	$ 3,067	$ 10,101	$ 4,786
Basic earnings per share	$ 1.19	$ 0.71	$ 2.29	$ 1.10
Diluted earnings per share	$ 1.19	$ 0.71	$ 2.28	$ 1.10

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