SIGNIFICANT ACCOUNTING POLICIES - SEGMENT, INCOME TAX AND IMPAIRMENT (Details) $ in Thousands |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2016
USD ($)
segment
|
Dec. 31, 2015
USD ($)
|
|
| SIGNIFICANT ACCOUNTING POLICIES | ||
| Number of operating segments | segment | 1 | |
| Impairment charges on long-lived assets | $ | $ 0 | $ 0 |