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STOCKHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended
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Mar. 31, 2018 | Dec. 31, 2018
Equity [Abstract] |  |
Equity offering, net (in shares) | 3,943,333 |
Subscription price (in USD per share) | $ 3.00 |
Gross proceeds from issuance of common stock | $ 11,800 |
Net proceeds from issuance of common stock | $ 11,400 | $ 11,436

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