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INCOME TAXES - Net operating loss carryforwards and Credit carryforwards (Details)
$ in Millions
12 Months Ended
Jun. 30, 2021
USD ($)
Tax credit carry forward  
Net aggregate decrease in valuation allowance $ (1.2)
Federal  
Tax credit carry forward  
Tax credit carry forwards 10.4
State  
Tax credit carry forward  
Net operating loss carry forwards 25.7
Tax credit carry forwards 8.9
Foreign  
Tax credit carry forward  
Net operating loss carry forwards $ 8.9