Concentration of Risk (Details) - Customer Concentration Risk	3 Months Ended		6 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Customer receivables | Customer A
Concentration Risk [Line Items]
Concentration risk (as a percent)			31.70%	31.20%
Customer receivables | Customer B
Concentration Risk [Line Items]
Concentration risk (as a percent)			17.50%	19.60%
Sales revenue, gross | Customer A
Concentration Risk [Line Items]
Concentration risk (as a percent)	28.90%	31.70%	29.60%	31.80%
Sales revenue, gross | Customer B
Concentration Risk [Line Items]
Concentration risk (as a percent)	13.40%	15.80%	13.80%	15.60%