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OTHER CURRENT ASSETS (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Other Assets [Abstract] |  |
Prepaid expenses | $ 4,285 | $ 3,045
Other receivables | 14,435 | 3,002
Prepaid expenses and other assets | $ 18,720 | $ 6,047

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