Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Expected tax expense computed at federal statutory rate	$ 101,564	$ 95,460	$ 104,919
State and local taxes, net of federal benefit	15,900	21,295	21,252
Remeasurement of current year NOL	0	(1,124)	(56,192)
R&D tax credit, net	(14,205)	(15,708)	(18,173)
Stock-based compensation	(930)	(3,981)	(5,525)
Nonincludible and nondeductible items, net	1,105	1,588	(2,269)
Remeasurement of deferred taxes	(5,546)	(5,629)	0
Other	1,016	(4,123)	(1,840)
Total income tax expense	$ 98,904	$ 87,778	$ 42,172
Effective income tax rate	20.40%	19.30%	8.40%