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Organization and Significant Accounting Policies - Long-Lived Assets (Details) - USD ($)	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2025
Long-Lived Assets
Impairment loss	$ 16,597,000
Machinery and equipment | Minimum
Long-Lived Assets
Estimated useful life		2 years
Machinery and equipment | Maximum
Long-Lived Assets
Estimated useful life		7 years
Computer equipment and software | Minimum
Long-Lived Assets
Estimated useful life		2 years
Computer equipment and software | Maximum
Long-Lived Assets
Estimated useful life		5 years
Buildings
Long-Lived Assets
Estimated useful life		5 years
In-service ISR assets
Long-Lived Assets
Estimated useful life		3 years
Furniture and fixtures | Minimum
Long-Lived Assets
Estimated useful life		3 years
Leasehold improvements | Minimum
Long-Lived Assets
Estimated useful life		3 years
Leasehold improvements | Maximum
Long-Lived Assets
Estimated useful life		7 years

X

- Definition

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
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-Name Accounting Standards Codification
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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

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