INCOME TAXES - Components of Earnings (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Components of earnings (loss) before income taxes	$ 5,304	$ 4,513	$ 5,775	$ 1,834	$ (23,435)	$ 287	$ 1,875	$ 1,276	$ 17,426	$ (19,997)	$ 9,610
Domestic operations
Components of earnings (loss) before income taxes									4,308	(24,450)	1,507
Foreign operations
Components of earnings (loss) before income taxes									$ 13,118	$ 4,453	$ 8,103