Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings
Beginning Balance (shares) at Apr. 30, 2022		37,111,667,000
Beginning Balance at Apr. 30, 2022	$ 2,240,838	$ 79,412	$ 2,161,426
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	152,932		152,932
Dividends declared	(14,431)		(14,431)
Share-based compensation (net of tax withholding on employee share-based awards) (shares)		138,132,000
Share-based compensation (net of tax withholding on employee share-based awards)	707	$ 707
Ending Balance (shares) at Jul. 31, 2022		37,249,799,000
Ending Balance at Jul. 31, 2022	2,380,046	$ 80,119	2,299,927
Beginning Balance (shares) at Apr. 30, 2023		37,263,248,000
Beginning Balance at Apr. 30, 2023	2,660,666	$ 110,037	2,550,629
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	169,237		169,237
Dividends declared	(16,214)		(16,214)
Repurchase of common stock		(123,569,000)
Repurchase of common stock	(29,893)	$ (29,893)
Share-based compensation (net of tax withholding on employee share-based awards) (shares)		126,774,000
Share-based compensation (net of tax withholding on employee share-based awards)	(7,501)	$ (7,501)
Ending Balance (shares) at Jul. 31, 2023		37,266,453,000
Ending Balance at Jul. 31, 2023	$ 2,776,295	$ 72,643	$ 2,703,652