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OTHER INCOME (EXPENSE), NET - Additional information (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Mar. 05, 2020 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Debt Instrument [Line Items] |  |  |  |
Loss on extinguishment of debt |  | $ 17,854 | $ 0 | $ 0
Extinguishment of debt, unamortized debt issuance costs |  | 0 | 0 | 155
Loss on extinguishment of debt |  | $ 17,854 | $ 0 | $ 0
Senior Notes 2023 | Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Loss on extinguishment of debt | $ 17,900 |  |  |
Extinguishment of debt, unamortized debt issuance costs | 6,700 |  |  |
Loss on extinguishment of debt | $ 11,200 |  |  |

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