Note 1 - Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Apr. 30, 2024

Notes Tables

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

	As of April 30, 2024
($ in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents	$	4,136	$	-	$	-	$	4,136
Equity securities		16,344		-		-		16,344
Available-for-sale fixed income securities		47,361		250		-		47,611
	$	67,841	$	250	$	-	$	68,091

	As of April 30, 2023
($ in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents	$	7,240	$	-	$	-	$	7,240
Equity securities		14,546		-		-		14,546
Available-for-sale fixed income securities		39,178		750		-		39,928
	$	60,964	$	750	$	-	$	61,714