Note G - Stock Based Compensation - Restricted Stock Activity (Details) - Restricted Stock [Member]	6 Months Ended
	Sep. 30, 2023 $ / shares shares
Unvested, shares (in shares) | shares	100,366
Unvested, weighted average grand date fair value (in dollars per share) | $ / shares	$ 6.08
Cancelled or forfeited, shares (in shares) | shares	0
Cancelled or forfeited, weighted average grand date fair value (in dollars per share) | $ / shares	$ 0
Granted, shares (in shares) | shares	0	[1]
Granted, weighted average grand date fair value (in dollars per share) | $ / shares	$ 0
Vested, shares (in shares) | shares	(14,000)
Vested, weighted average grand date fair value (in dollars per share) | $ / shares	$ 4.32
Unvested, shares (in shares) | shares	86,366
Unvested, weighted average grand date fair value (in dollars per share) | $ / shares	$ 6.37

[1] 50,000 shares were issued out of treasury stock