FAIR VALUES OF ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Assets and liabilities measured at fair value on a recurring basis | ||
| Derivative warrant liability | $ 1,314 | $ 1,907 |
| Recurring basis | ||
| Assets and liabilities measured at fair value on a recurring basis | ||
| Cash equivalents | 21,353 | 14,804 |
| Marketable Securities | 11,577 | 5,274 |
| Derivative warrant liability | 1,314 | 1,907 |
| Recurring basis | Level 1 | ||
| Assets and liabilities measured at fair value on a recurring basis | ||
| Cash equivalents | 21,353 | 14,804 |
| Recurring basis | Level 2 | ||
| Assets and liabilities measured at fair value on a recurring basis | ||
| Marketable Securities | 11,577 | 5,274 |
| Derivative warrant liability | $ 1,314 | $ 1,907 |