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Note N - Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2023	Dec. 31, 2022
Net earnings	$ 1,184	$ 3,513	$ 7,690	$ 1,376	$ 2,471	$ 11,184	$ 12,387	$ 15,031
Less: Allocation to unvested restricted stock units	10			19			131	240
Net earnings attributable to common shareholders	$ 1,174			$ 1,357			$ 12,256	$ 14,791
Weighted average common shares outstanding (in shares)	7,245,183			7,275,212			7,274,332	7,196,452

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Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of stock options or restrictive stock units (RSUs).

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