COMMITMENTS AND CONTINGENCIES, Purchase Commitments (Details) - SiC Materials [Member] $ in Thousands	9 Months Ended
	Mar. 31, 2022 USD ($) Option	Mar. 31, 2021 USD ($)
Purchase Commitments [Abstract]
Percentage of materials committed to be purchased	100.00%
Number of options to extend term of exclusive supply agreement | Option	1
Extension period of exclusive supply agreement	2 years
Total purchase commitment	$ 52,950
Remaining purchase commitment	28,350
Purchases	4,490	$ 2,280
Minimum [Member]
Purchase Commitments [Abstract]
Future minimum annual purchase commitments	4,000
Maximum [Member]
Purchase Commitments [Abstract]
Future minimum annual purchase commitments	$ 10,000