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Note H - Net Income Per Share - Computations of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net Income	$ 8,301	$ 1,387
Basic (in shares)	5,921	6,168
Dilutive effect of common stock equivalents (in shares)	64	96
Diluted weighted average common shares outstanding (in shares)	5,985	6,264
Basic (in dollars per share)	$ 1.40	$ 0.22
Diluted (in dollars per share)	$ 1.39	$ 0.22

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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