Note L - Stockholders' Equity - Schedule of Stockholders' Equity (Details) (Parentheticals) - $ / shares	3 Months Ended				6 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Cash dividends, per share (in dollars per share)	$ 0.04	$ 0.04	$ 0.02	$ 0.02	$ 0.08	$ 0.04