Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 577,967	$ 504,690
Less: accumulated depreciation and amortization	227,288	193,364
Total property and equipment, net of accumulated depreciation	350,679	311,326
Depreciation expense	55,437	50,480	$ 51,332
Land
Property, Plant and Equipment [Line Items]
Total property and equipment	62,185	56,841
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	130,824	120,616
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	381,090	324,375
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 3,868	$ 2,858