INCOME TAXES - Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
U.S.	$ (140,021)	$ (94,223)	$ (87,485)
Foreign	1,430	929	0
Loss before benefit for income taxes	$ (138,591)	$ (93,294)	$ (87,485)