Note 8 - Stock Based Compensation - Restricted Stock Activity (Details) - Restricted Stock [Member]	3 Months Ended
	Jun. 30, 2026 $ / shares shares
Unvested (in shares) | shares	142,276
Unvested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 16.86
Granted (in shares) | shares	105,300
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 23.89
Vested (in shares) | shares	(17,740)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 14.39
Unvested (in shares) | shares	229,836
Unvested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 20.27