Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Apr. 30, 2022		42,773
Beginning balance at Apr. 30, 2022	$ 1,064,498	$ 428	$ 522,136	$ 547,977	$ (6,043)
Increase (Decrease) in Stockholders' Equity
Net income	$ 332,991			332,991
Repurchase and retirement of common stock (in shares)	(2,271)	(2,271)
Repurchase and retirement of common stock	$ (110,776)	$ (23)	(110,753)
Other comprehensive income (loss), net of tax	(29,086)				(29,086)
Equity-based compensation	13,217		13,217
Exercise of stock options (in shares)		280
Exercise of stock options	4,715	$ 3	4,712
Vesting of restricted stock units (in shares)		110
Vesting of restricted stock units	0	$ 1	(1)
Tax withholding related to net share settlements of equity awards	(4,005)		(4,005)
Issuance of common stock pursuant to employee stock purchase plan (in shares)		79
Issuance of common stock pursuant to employee stock purchase plan	3,203	$ 1	3,202
Ending balance (in shares) at Apr. 30, 2023		40,971
Ending balance at Apr. 30, 2023	1,274,757	$ 410	428,508	880,968	(35,129)
Increase (Decrease) in Stockholders' Equity
Net income	$ 276,079			276,079
Repurchase and retirement of common stock (in shares)	(1,702)	(1,702)
Repurchase and retirement of common stock	$ (116,439)	$ (17)	(116,422)
Other comprehensive income (loss), net of tax	3,610				3,610
Equity-based compensation	15,618		15,618
Exercise of stock options (in shares)		276
Exercise of stock options	6,336	$ 2	6,334
Vesting of restricted stock units (in shares)		120
Vesting of restricted stock units	0	$ 1	(1)
Tax withholding related to net share settlements of equity awards	(4,026)		(4,026)
Issuance of common stock pursuant to employee stock purchase plan (in shares)		89
Issuance of common stock pursuant to employee stock purchase plan	$ 4,586	$ 1	4,585
Ending balance (in shares) at Apr. 30, 2024	39,754	39,754
Ending balance at Apr. 30, 2024	$ 1,460,521	$ 397	334,596	1,157,047	(31,519)
Increase (Decrease) in Stockholders' Equity
Net income	$ 115,469			115,469
Repurchase and retirement of common stock (in shares)	(1,925)	(1,925)
Repurchase and retirement of common stock	$ (165,502)	$ (19)	(165,483)
Other comprehensive income (loss), net of tax	(10,414)				(10,414)
Equity-based compensation	15,646		15,646
Exercise of stock options (in shares)		131
Exercise of stock options	3,499	$ 1	3,498
Vesting of restricted stock units (in shares)		120
Vesting of restricted stock units	0	$ 1	(1)
Tax withholding related to net share settlements of equity awards	(5,006)		(5,006)
Issuance of common stock pursuant to employee stock purchase plan (in shares)		84
Issuance of common stock pursuant to employee stock purchase plan	$ 5,967	$ 1	5,966
Ending balance (in shares) at Apr. 30, 2025	38,164	38,164
Ending balance at Apr. 30, 2025	$ 1,420,180	$ 381	$ 189,216	$ 1,272,516	$ (41,933)