Restructuring (Additional Information) (Detail) - USD ($)	12 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 10,244,658	$ 0	$ 0
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	5,700,000
Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3,400,000
Marketing and Distribution Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,100,000