Concentration of Risk (Details) - Customer Concentration Risk	3 Months Ended		6 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Customer receivables | Customer A
Concentration Risk [Line Items]
Concentration risk (as a percent)			38.80%	33.80%
Customer receivables | Customer B
Concentration Risk [Line Items]
Concentration risk (as a percent)			14.30%	16.20%
Sales revenue, gross | Customer A
Concentration Risk [Line Items]
Concentration risk (as a percent)	32.20%	28.00%	31.20%	27.40%
Sales revenue, gross | Customer B
Concentration Risk [Line Items]
Concentration risk (as a percent)	10.00%	11.10%	10.00%	11.30%