Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - 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	89,470			89,470
Foreign currency translation adjustments	2,642				2,642
Other comprehensive income (loss), net of tax	2,219				2,219
Repurchase and retirement of common stock (in shares)		(516)
Repurchase and retirement of common stock	(23,795)	$ (5)	(23,790)
Equity-based compensation	3,132		3,132
Exercise of stock options (in shares)		1
Exercise of stock options	29		29
Vesting of restricted stock units (in shares)		7
Tax withholding related to net share settlements of equity awards	(300)		(300)
Issuance of common stock pursuant to employee stock purchase plan (in shares)		33
Issuance of common stock pursuant to employee stock purchase plan	1,329		1,329
Ending balance (in shares) at Jul. 31, 2022		42,298
Ending balance at Jul. 31, 2022	$ 1,139,224	$ 423	502,536	637,447	(1,182)
Beginning balance (in shares) at Apr. 30, 2023	40,971	40,971
Beginning balance at Apr. 30, 2023	$ 1,274,757	$ 410	428,508	880,968	(35,129)
Increase (Decrease) in Stockholders' Equity
Net income	86,830			86,830
Foreign currency translation adjustments	11,398				11,398
Other comprehensive income (loss), net of tax	5,389				5,389
Repurchase and retirement of common stock (in shares)		(469)
Repurchase and retirement of common stock	(30,784)	$ (5)	(30,779)
Equity-based compensation	3,304		3,304
Exercise of stock options (in shares)		46
Exercise of stock options	1,248		1,248
Issuance of common stock pursuant to employee stock purchase plan (in shares)		58
Issuance of common stock pursuant to employee stock purchase plan	$ 2,664	$ 1	2,663
Ending balance (in shares) at Jul. 31, 2023	40,606	40,606
Ending balance at Jul. 31, 2023	$ 1,354,806	$ 406	$ 404,944	$ 967,798	$ (18,342)