Note 12 - Stock Repurchase Program (Tables)

12 Months Ended

Apr. 30, 2023

Notes Tables

Class of Treasury Stock [Table Text Block]

Period	Total Number of Shares Purchased		Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs		Approximate Dollar Value of Shares That May Yet Be Purchased Under the Plans or Programs
Program authorization							$	4,000
Shares purchased in prior periods		3,103,633	$	0.38		3,103,633	$	2,823
Quarter ended July 31, 2021		-	$	-		-	$	2,823
Quarter ended October 31, 2021 (a)		6,290	$	0.62		6,290	$	2,819
Quarter ended January 31, 2022		-	$	-		-	$	2,819
Quarter ended April 30, 2022 (a)		180,503	$	0.91		180,503	$	2,655
Quarter ended July 31, 2022 (a)		1,639	$	0.84		1,639	$	2,653
Quarter ended October 31, 2022 (a)		150	$	0.70		150	$	2,653
Quarter ended January 31, 2023 (a)		85,307	$	0.68		85,307	$	2,595
Quarter ended April 30, 2023 (a)		2,000	$	0.68		2,000	$	2,594
Total		3,379,522	$	0.42		3,379,522