Concentration of Risk (Details) - Customer Concentration Risk	3 Months Ended		9 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2024	Jan. 31, 2023
Customer receivables | Customer A
Concentration Risk [Line Items]
Concentration risk (as a percent)			33.50%	39.90%
Customer receivables | Customer B
Concentration Risk [Line Items]
Concentration risk (as a percent)			18.60%	16.40%
Sales revenue, gross | Customer A
Concentration Risk [Line Items]
Concentration risk (as a percent)	29.10%	29.50%	28.40%	29.50%
Sales revenue, gross | Customer B
Concentration Risk [Line Items]
Concentration risk (as a percent)	12.20%	12.80%	13.10%	13.50%