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Account Receivable, Contract Assets and Contract Liabilities (Details Narrative) $ in Millions	6 Months Ended
	Oct. 31, 2022 USD ($)
Grant Revenue [Member]
Revenue	$ 1.0
Sales Revenue [Member]
Revenue	$ 0.4

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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Period Type:	duration

X

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Balance Type:
Period Type:

X

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Balance Type:
Period Type: