CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss), Net of Income Tax
Stockholder's equity, beginning balance at Jun. 30, 2021	$ 1,400,936	$ 681	$ (222,530)	$ 432,550	$ 1,187,728	$ 2,507
Common stock, issued and treasury, beginning balance (in shares) at Jun. 30, 2021		68,069,321
Common stock, treasury, beginning balance (in shares) at Jun. 30, 2021			8,751,377
Common stock, outstanding, beginning balance (in shares) at Jun. 30, 2021		59,317,944
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	60,210				60,210
Other comprehensive income (loss)	(507)					(507)
Stock-based compensation expense and restricted stock unit vesting, issued (in shares)		301,296
Share-based compensation expense and restricted stock unit vesting, treasury stock (in shares)			(124,607)
Stock-based compensation expense and restricted stock unit vesting, outstanding (in shares)		176,689
Stock-based compensation activity	(2,018)	$ 3	$ (5,999)	3,978
Stockholder's equity, ending balance at Sep. 30, 2021	1,458,621	$ 684	$ (228,529)	436,528	1,247,938	2,000
Common stock, issued and treasury, ending balance (in shares) at Sep. 30, 2021		68,370,617
Common stock, treasury, ending balance (in shares) at Sep. 30, 2021			8,875,984
Common stock, outstanding, ending balance (in shares) at Sep. 30, 2021		59,494,633
Stockholder's equity, beginning balance at Jun. 30, 2022	$ 1,642,973	$ 689	$ (237,011)	453,784	1,428,444	(2,933)
Common stock, issued and treasury, beginning balance (in shares) at Jun. 30, 2022	68,859,722	68,859,722
Common stock, treasury, beginning balance (in shares) at Jun. 30, 2022	9,081,773		9,081,773
Common stock, outstanding, beginning balance (in shares) at Jun. 30, 2022	59,777,949	59,777,949
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 58,407				58,407
Other comprehensive income (loss)	(2,837)					(2,837)
Stock-based compensation expense and restricted stock unit vesting, issued (in shares)		291,430
Share-based compensation expense and restricted stock unit vesting, treasury stock (in shares)			(70,706)
Stock-based compensation expense and restricted stock unit vesting, outstanding (in shares)		220,724
Stock-based compensation activity	2,429	$ 3	$ (2,891)	5,317
Stockholder's equity, ending balance at Sep. 30, 2022	$ 1,700,972	$ 692	$ (239,902)	$ 459,101	$ 1,486,851	$ (5,770)
Common stock, issued and treasury, ending balance (in shares) at Sep. 30, 2022	69,151,152	69,151,152
Common stock, treasury, ending balance (in shares) at Sep. 30, 2022	9,152,479		9,152,479
Common stock, outstanding, ending balance (in shares) at Sep. 30, 2022	59,998,673	59,998,673