CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance (in shares) at Jun. 30, 2023		42,923,000
Beginning balance (in shares) at Jun. 30, 2023						20,126,000
Beginning balance at Jun. 30, 2023	$ 3,224,334	$ 4,292	$ 546,334	$ 3,940,616	$ (4,916)	$ (1,261,992)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	169,917			169,917
Stock-based compensation expense	22,949		22,949
Tax withholdings on restricted share vestings (in shares)		104,000
Tax withholdings on restricted share vestings	(17,928)	$ 11	(17,939)
Other comprehensive loss, net of tax	(11,545)				(11,545)
Repurchases of common stock	(157,445)		51,231			$ (208,676)
Repurchases of common stock (in shares)						633,000
Treasury stock issued under stock purchase plans	5,342		38			$ 5,304
Treasury stock issued under stock purchase plans (in shares)						(17,000)
Ending balance (in shares) at Dec. 31, 2023		43,027,000
Ending balance (in shares) at Dec. 31, 2023						20,742,000
Ending balance at Dec. 31, 2023	3,235,624	$ 4,303	602,613	4,110,533	(16,461)	$ (1,465,364)
Beginning balance (in shares) at Sep. 30, 2023		42,929,000
Beginning balance (in shares) at Sep. 30, 2023						20,703,000
Beginning balance at Sep. 30, 2023	3,164,033	$ 4,293	594,885	4,026,663	(8,685)	$ (1,453,123)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	83,870			83,870
Stock-based compensation expense	12,925		12,925
Tax withholdings on restricted share vestings (in shares)		98,000
Tax withholdings on restricted share vestings	(17,331)	$ 10	(17,341)
Other comprehensive loss, net of tax	(7,776)				(7,776)
Repurchases of common stock	(2,788)		12,144			$ (14,932)
Repurchases of common stock (in shares)						48,000
Treasury stock issued under stock purchase plans	2,691					$ 2,691
Treasury stock issued under stock purchase plans (in shares)						(9,000)
Ending balance (in shares) at Dec. 31, 2023		43,027,000
Ending balance (in shares) at Dec. 31, 2023						20,742,000
Ending balance at Dec. 31, 2023	$ 3,235,624	$ 4,303	602,613	4,110,533	(16,461)	$ (1,465,364)
Beginning balance (in shares) at Jun. 30, 2024	22,301,000	43,042,000
Beginning balance (in shares) at Jun. 30, 2024	20,740,000					20,740,000
Beginning balance at Jun. 30, 2024	$ 3,518,207	$ 4,304	631,191	4,360,540	(12,522)	$ (1,465,306)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	230,115			230,115
Stock-based compensation expense	31,343		31,343
Tax withholdings on restricted share vestings (in shares)		117,000
Tax withholdings on restricted share vestings	(36,316)	$ 12	(36,328)
Other comprehensive loss, net of tax	(14,650)				(14,650)
Repurchases of common stock	(6,786)		(371)			$ (6,415)
Repurchases of common stock (in shares)						15,000
Treasury stock issued under stock purchase plans	$ 6,460		43			$ 6,417
Treasury stock issued under stock purchase plans (in shares)						(16,000)
Ending balance (in shares) at Dec. 31, 2024	22,420,000	43,159,000
Ending balance (in shares) at Dec. 31, 2024	20,739,000					20,739,000
Ending balance at Dec. 31, 2024	$ 3,728,373	$ 4,316	625,878	4,590,655	(27,172)	$ (1,465,304)
Beginning balance (in shares) at Sep. 30, 2024		43,045,000
Beginning balance (in shares) at Sep. 30, 2024						20,740,000
Beginning balance at Sep. 30, 2024	3,651,606	$ 4,305	645,917	4,480,717	(14,028)	$ (1,465,305)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	109,938			109,938
Stock-based compensation expense	15,952		15,952
Tax withholdings on restricted share vestings (in shares)		114,000
Tax withholdings on restricted share vestings	(35,750)	$ 11	(35,761)
Other comprehensive loss, net of tax	(13,144)				(13,144)
Repurchases of common stock	(3,544)		(227)			$ (3,317)
Repurchases of common stock (in shares)						7,000
Treasury stock issued under stock purchase plans	$ 3,315		(3)			$ 3,318
Treasury stock issued under stock purchase plans (in shares)						(8,000)
Ending balance (in shares) at Dec. 31, 2024	22,420,000	43,159,000
Ending balance (in shares) at Dec. 31, 2024	20,739,000					20,739,000
Ending balance at Dec. 31, 2024	$ 3,728,373	$ 4,316	$ 625,878	$ 4,590,655	$ (27,172)	$ (1,465,304)