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Note 12 - Accounting for the Costs of Computer Software Developed for Internal Use (Details Textual) - USD ($)	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2023
Capitalized Computer Software, Additions	$ 59,000	$ 62,000	$ 110,000
Capitalized Computer Software, Amortization	$ 128,000	$ 62,000	$ 49,000
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	3 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	5 years

X

- Definition

Additions made to capitalized computer software costs during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481283/985-20-50-2

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X

- Definition

Amount of expense for amortization of capitalized computer software costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481283/985-20-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481283/985-20-50-1

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X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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