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

3 Months Ended

Jul. 31, 2024

Notes Tables

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

	As of July 31, 2024
($ in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents	$	15,248	$	-	$	-	$	15,248
Equity securities		21,724		-		-		21,724
Available-for-sale fixed income securities		33,928		-		-		33,928
	$	70,900	$	-	$	-	$	70,900

	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