Provision for Income Taxes - Summary of Reconciliation of Effective Tax Rate (Details)	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Income Tax Disclosure [Abstract]
Federal income tax at statutory rate	21.00%	21.00%
US vs. foreign tax rate difference	(0.20%)	1.30%
State income tax, net of federal benefit	2.20%	3.30%
Permanent differences	(0.50%)	(47.30%)
Increase in uncertain tax position	0.00%	0.00%
Change in valuation allowance	(23.80%)	27.70%
Income tax expense	(1.30%)	6.00%