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INCOME TAXES - Additional Information (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
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Income Tax Disclosure [Abstract] |  |  |  |
Federal operating loss carryforwards | $ 187,000 | $ 182,000 |  |
State operating loss carryforwards | 221,000 | 221,000 |  |
Unrecognized tax benefits | 444 | $ 207 | $ 210 | $ 0
Accrued interest and penalties | $ 30 |  |  |

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