Concentrations (Tables)

12 Months Ended

Apr. 30, 2022

Risks and Uncertainties [Abstract]

Summary of Significant Customers' Accounts Receivable and Revenue

The following table summarizes the significant customers’ accounts receivable and revenue as a percentage of total accounts receivable and total revenue, respectively:

Accounts Receivable	April 30, 2022		April 30, 2021
Customer A	14	%	35	%
Customer B	52	%	*
Customer C	*		11	%
Customer D	*		15	%
Customer E	*		11	%

	Year ended April 30,
Revenue	2022		2021		2020
Customer A	18	%	32	%	28	%
Customer B	30	%	*		*
Customer F	11	%	*		*
Customer G	10	%	*		*
Customer H	*		10	%	16	%
Customer I	*		12	%	*

* Less than 10% of total accounts receivable or total revenue.