Concentration of Risk (Details) - Customer Concentration Risk	3 Months Ended		9 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Customer receivables | Customer A
Concentration Risk [Line Items]
Concentration risk (as a percent)			41.10%	33.50%
Customer receivables | Customer B
Concentration Risk [Line Items]
Concentration risk (as a percent)			15.50%	18.60%
Sales revenue, gross | Customer A
Concentration Risk [Line Items]
Concentration risk (as a percent)	31.70%	29.10%	28.70%	28.40%
Sales revenue, gross | Customer B
Concentration Risk [Line Items]
Concentration risk (as a percent)	11.90%	12.20%	11.50%	13.10%