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RELATED PARTY TRANSACTIONS (Details) - Consulting arrangement - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Matt Mahmood |  |  |
RELATED PARTY TRANSACTIONS |  |  |
Expenses incurred |  | $ 50 | $ 97
William Murray |  |  |
RELATED PARTY TRANSACTIONS |  |  |
Term of consulting agreement | 3 months |  |
Expenses incurred |  | $ 68 |

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