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RELATED PARTY TRANSACTIONS - Additional Information (Details) - V - Watch SA - USD ($) | 1 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 31, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Related Party Transaction [Line Items] |  |  |
Services agreement | $ 105,000 |  |
Related party expenses |  | $ 0 | $ 100,000
Minimum |  |  |
Related Party Transaction [Line Items] |  |  |
Percentage of outstanding capital stock | 10.00% |  |

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