Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Apr. 30, 2022	Apr. 30, 2021
Statement of Financial Position [Abstract]
Trade accounts and notes receivable, allowances (in dollars)	$ 9,346	$ 6,282
Property and equipment, accumulated depreciation (in dollars)	$ 227,288	$ 193,364
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	42,773,000	43,073,000
Common stock, shares outstanding (in shares)	42,773,000	43,073,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0