DEFERRED GRANT INCOME (Details Textual) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended | |
|---|---|---|---|
Jun. 30, 2018 |
Dec. 31, 2017 |
Jul. 31, 2017 |
|
| Deferred Grant Income [Line Items] | |||
| Proceeds from Grantors | $ 9,050 | $ 7,050 | |
| Grants Receivable | $ 15,912 | ||
| Research and Development Arrangement, Contract to Perform for Others, Compensation Earned | $ 2,740 | $ 4,425 |