Concentration of Risk (Details) - Customer Concentration Risk	3 Months Ended
	Jul. 31, 2025	Jul. 31, 2024
Customer receivables | Customer A
Concentration Risk [Line Items]
Concentration risk (as a percent)	36.90%	28.90%
Customer receivables | Customer B
Concentration Risk [Line Items]
Concentration risk (as a percent)	13.10%	15.90%
Sales revenue, gross | Customer A
Concentration Risk [Line Items]
Concentration risk (as a percent)	30.20%	26.70%
Sales revenue, gross | Customer B
Concentration Risk [Line Items]
Concentration risk (as a percent)	10.00%	11.50%