Note G - Stock Based Compensation - Restricted Stock Activity (Details) - Restricted Stock [Member]	3 Months Ended
	Jun. 30, 2022 $ / shares shares
Unvested (in shares) | shares	139,523
Unvested (in dollars per share) | $ / shares	$ 5.96
Cancelled or forfeited (in shares) | shares	0
Cancelled or forfeited (in dollars per share) | $ / shares	$ 0
Granted (in shares) | shares	0	[1]
Granted (in dollars per share) | $ / shares	$ 0
Vested (in shares) | shares	(14,000)
Vested (in dollars per share) | $ / shares	$ 8.51
Unvested (in shares) | shares	125,523
Unvested (in dollars per share) | $ / shares	$ 5.68

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