SUBSEQUENT EVENTS (Details) - USD ($)
$ / shares in Units, $ in Thousands |
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|
3 Months Ended |
6 Months Ended |
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|
Aug. 02, 2019 |
Jun. 06, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Aug. 05, 2019 |
Dec. 31, 2018 |
| Subsequent Event [Line Items] |
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| Proceeds from Warrant Exercises |
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$ 12,040
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$ 0
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$ 11,994
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$ 0
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$ 11,994
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| Class of Warrant or Right, Number of Securities Called by Warrants or Rights |
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2,458,201
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| Cash and Cash Equivalents, at Carrying Value |
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|
$ 1,126
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$ 1,126
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$ 942
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| New Warrant [Member] |
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| Subsequent Event [Line Items] |
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| Class of Warrant or Right, Exercise Price of Warrants or Rights |
|
$ 9
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| Subsequent Event [Member] |
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| Subsequent Event [Line Items] |
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| Proceeds from Warrant Exercises |
$ 3,300
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| Class of Warrant or Right, Exercise Price of Warrants or Rights |
$ 7.00
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| Cash and Cash Equivalents, at Carrying Value |
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$ 4,500
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| Subsequent Event [Member] | 2018 Warrant |
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| Subsequent Event [Line Items] |
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| Class of Warrant or Right, Exercise Price of Warrants or Rights |
$ 3.90
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| Class of Warrant or Right, Number of Securities Called by Warrants or Rights |
842,000
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| Subsequent Event [Member] | New Warrant [Member] |
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| Subsequent Event [Line Items] |
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| Class of Warrant or Right, Exercise Price of Warrants or Rights |
$ 7.00
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| Class of Warrant or Right, Number of Securities Called by Warrants or Rights |
842,000
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