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INCOME TAXES - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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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 |  |

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