INCOME TAXES - Changes in Valuation Allowances (Details) - USD ($)	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Valuation Allowance [Roll Forward]
Balance at beginning of year	$ 36,891,000	$ 37,453,000
Balance at end of year	52,551,000	36,891,000	$ 37,453,000
Additions charged to income tax expense
Valuation Allowance [Roll Forward]
Charged to costs and expenses	23,212,000	784,000
Reductions credited to income tax expense
Valuation Allowance [Roll Forward]
Charged to costs and expenses	(8,514,000)	(1,004,000)
THWR purchase accounting
Valuation Allowance [Roll Forward]
Charged to costs and expenses	291,000	1,743,000	$ 0
Currency translation adjustments
Valuation Allowance [Roll Forward]
Charged to costs and expenses	$ 671,000	$ (2,085,000)