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EARNINGS (LOSS) PER SHARE AND STOCKHOLDERS' EQUITY - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 6 Months Ended
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Mar. 31, 2018 | Jun. 30, 2018
Earnings Per Share [Abstract] |  |
Equity offering (in shares) | 3,943,333 |
Shares issued, price per share (in dollars per share) | $ 3.00 |
Registered direct offering | $ 11,400 | $ 11,436

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