Note 3 - Equity Compensation Plans and Capital Stock (Tables)

12 Months Ended

Mar. 31, 2023

Notes Tables

Nonvested Restricted Stock Shares Activity [Table Text Block]

				Weighted
				Average Grant
	Number of			Date Fair Value
	Shares			Per Share
Unvested at March 31, 2021		339,625		$	6.07
Granted		10,190			12.56
Vested		(210,292	)		6.46
Unvested at March 31, 2022		139,523		$	5.96
Granted		7,700			9.10
Vested		(46,857	)		6.21
Unvested at March 31, 2023		100,366		$	6.08