Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings
Beginning Balance (shares) at Apr. 30, 2024		37,008,488
Beginning Balance at Apr. 30, 2024	$ 3,015,381	$ 27,453	$ 2,987,928
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	180,198		180,198
Dividends declared	(18,763)		(18,763)
Share-based compensation (net of tax withholding on employee share-based awards) (shares)		169,969
Share-based compensation	11,036	$ 11,036
Tax withholdings on employee share-based awards (in shares)		(67,306)
Tax withholdings on employee share-based awards	(24,932)	$ (24,932)
Ending Balance (shares) at Jul. 31, 2024		37,111,151
Ending Balance at Jul. 31, 2024	3,162,920	$ 13,557	3,149,363
Beginning Balance (shares) at Apr. 30, 2025		37,119,083
Beginning Balance at Apr. 30, 2025	3,508,670	$ 49,605	3,459,065
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	215,355		215,355
Dividends declared	(21,422)		(21,422)
Repurchase of common stock		(69,687)
Repurchase of common stock	(31,251)	$ (18,931)	(12,320)
Share-based compensation (net of tax withholding on employee share-based awards) (shares)		223,589
Share-based compensation	15,221	$ 15,221
Tax withholdings on employee share-based awards (in shares)		(92,000)
Tax withholdings on employee share-based awards	(45,895)	$ (45,895)
Ending Balance (shares) at Jul. 31, 2025		37,180,985
Ending Balance at Jul. 31, 2025	$ 3,640,678	$ 0	$ 3,640,678