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Schedule of Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023
Income Tax Disclosure [Abstract]
Computed expected tax benefit	(21.00%)	(21.00%)
State income taxes, net of federal benefit	(3.50%)	4.00%
Federal research and development tax credits	(1.10%)	1.90%
Foreign rate differential
Other non-deductible expenses	0.40%	(1.10%)
Proceeds of sale of New Jersey tax benefits	(3.40%)	(7.00%)
Other	4.50%	1.30%
Increase in valuation allowance	19.80%	22.90%
Income tax (benefit)	(4.30%)	1.00%

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