INCOME TAXES - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Income Taxes
Additional valuation allowance	$ 4.1	$ 34.4
Operating loss carryforwards, subject to expiration	27.3
Operating loss carryforwards, not subject to expiration	89.5
Tax credit carryforward amount subject to expiration	37.7
Undistributed earnings of international subsidiaries	7.8
Reserve on unrecognized tax benefits that would benefit the effective tax rate	1.0
Interest and penalties	0.2	$ 0.2
Accrued interest and penalties related to unrecognized tax benefits	0.7
Capital loss carryforward
Income Taxes
Tax credit carryforward amount subject to expiration	5.3
Domestic Tax Authority
Income Taxes
Operating loss carryforwards	116.8
State and Local Jurisdiction
Income Taxes
Operating loss carryforwards	28.1
Operating loss carryforwards, subject to expiration	24.4
Operating loss carryforwards, not subject to expiration	3.7
Foreign Tax Authority | Canada
Income Taxes
Operating loss carryforwards	7.8
Foreign Tax Authority | U.K.
Income Taxes
Operating loss carryforwards	$ 0.5