v3.19.1

COMMON STOCK (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2017 | May 31, 2017
Issuance of common stock, net of transaction expense | $ 1,900 | $ 57,200 | $ 59,130 |
At the market offering common stock offering capacity |  |  |  | $ 40,000
Common Stock [Member] |  |  |  |
Issuance of common stock (shares) | 500,000 | 50,100,000 | 50,612,027 |

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