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INCOME TAXES - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Operating Loss Carryforwards [Line Items]      
Deferred Tax Assets, Valuation Allowance $ (1.5) $ (3.2)  
Deferred Tax Liabilities, Net 3.7    
Deferred Tax Assets, Valuation Allowance 2.2    
Income Taxes, Amount of Operating Losses Subject to Limitation     $ 233.5
Income Taxes, Incomplete Accounting, Operating Loss Not Utilized     $ 209.0
Domestic Tax Authority      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforwards 27.0    
Foreign Tax Authority      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforwards 0.7    
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration 0.7    
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration $ 7.0