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FAIR VALUE MEASUREMENTS: (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Jun. 30, 2018
Assets and liabilities measured at fair value on a nonrecurring basis |  |  |  |  |
Long-term debt, fair value | $ 90,000 |  | $ 90,000 |  | $ 90,000
Long-term debt | 90,000 |  | 90,000 |  | 90,000
Long-term lease liability | 17,646 |  | 17,646 |  | $ 0
Long-lived assets |  |  | 2,303 | $ 16,715 |
Level 2 |  |  |  |  |
Assets and liabilities measured at fair value on a nonrecurring basis |  |  |  |  |
Long-term lease liability | 17,600 |  | 17,600 |  |
Nonrecurring | Level 3 |  |  |  |  |
Assets and liabilities measured at fair value on a nonrecurring basis |  |  |  |  |
Long-lived assets | $ 472 | $ 14,435 | $ 2,303 | $ 16,715 |

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