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INCOME TAXES - Net operating loss carryforwards and Credit carryforwards (Details)
$ in Millions
12 Months Ended
Jun. 30, 2020
USD ($)
Tax credit carry forward  
Net aggregate increase in valuation allowance $ 6.0
Federal  
Tax credit carry forward  
Tax credit carry forwards 14.3
State  
Tax credit carry forward  
Net operating loss carry forwards 36.5
Tax credit carry forwards 8.1
Foreign  
Tax credit carry forward  
Net operating loss carry forwards $ 9.4