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

12 Months Ended

Apr. 30, 2025

Notes Tables

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

			As of April 30, 2025
($ in thousands)		Level 1				Level 2				Level 3				Total
Cash equivalents		$	33,615			$	-			$	-			$	33,615
Equity securities			20,879				-				-				20,879
Available-for-sale fixed income securities			22,435				-				-				22,435
		$	76,929			$	-			$	-			$	76,929

			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

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- Definition

Tabular disclosure of financial instrument measured at fair value on recurring or nonrecurring basis. Includes, but is not limited to, instrument classified in shareholders' equity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

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- References

No definition available.

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