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

9 Months Ended

Jan. 31, 2025

Notes Tables

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

	As of January 31, 2025
($ in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents	$	26,005	$	-	$	-	$	26,005
Equity securities		21,808		-		-		21,808
Available-for-sale fixed income securities		27,167		-		-		27,167
	$	74,980	$	-	$	-	$	74,980

	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