Product Revenues and Accounts Receivable, net - Summary of Company's Total Gross Product Revenue (Detail) - Revenue Benchmark [Member] - Customer Concentration Risk [Member]	3 Months Ended
	Jul. 31, 2025
Customer A [Member]
Product Information [Line Items]
Percentage of product revenue	40.00%
Customer B [Member]
Product Information [Line Items]
Percentage of product revenue	35.00%
Customer C [Member]
Product Information [Line Items]
Percentage of product revenue	15.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.