Concentration of Risk (Details) - Customer Concentration Risk	3 Months Ended
	Jul. 31, 2023	Jul. 31, 2022
Customer receivables | Customer A
Concentration Risk [Line Items]
Concentration risk (as a percent)	31.50%	33.60%
Customer receivables | Customer B
Concentration Risk [Line Items]
Concentration risk (as a percent)	23.40%	17.20%
Sales revenue, gross | Customer A
Concentration Risk [Line Items]
Concentration risk (as a percent)	28.20%	30.30%
Sales revenue, gross | Customer B
Concentration Risk [Line Items]
Concentration risk (as a percent)	14.00%	14.20%