FINANCE INCOME / EXPENSE (Details) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 17, 2015 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Finance income | ||||
| Interest gain | $ 479 | $ 60 | $ 8 | |
| Gain arising for held-for-trading investments | 923 | 3,619 | 13,453 | |
| Gain arising for held-to-maturity investments | 0 | 0 | 4,941 | |
| Gain arising for available-for-sale investments | 240 | 6,325 | 0 | |
| Foreign exchange gain | 6,314 | 6,211 | 9,153 | |
| Subtotal | 7,956 | 16,215 | 27,555 | |
| Finance expense | ||||
| Interest expense on borrowings | (95) | (41) | (108) | |
| Loss arising for held-for-trading investments | (620) | (2,966) | 0 | |
| Foreign exchange loss | $ (4,967) | (9,043) | (14,831) | (19,289) |
| Other interest | (788) | (776) | (888) | |
| Other | (490) | (613) | (667) | |
| Subtotal | (11,036) | (19,227) | (20,952) | |
| Finance (expense) income, net | (3,080) | (3,012) | 6,603 | |
| Other comprehensive income, net of tax, available-for-sale financial assets | $ 27 | $ 52 | $ (52) | |