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, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2024	Dec. 31, 2023
Net earnings	$ (1,152)	$ (675)	$ 2,567	$ 1,184	$ 3,513	$ 7,690	$ 740	$ 12,387
Less: Allocation to unvested restricted stock units	1			10			3	131
Net earnings (loss) attributable to common shareholders	$ (1,153)			$ 1,174			$ 737	$ 12,256
Weighted average common shares outstanding (in shares)	6,948,023			7,245,183			6,942,216	7,274,332