LONG-TERM INVESTMENTS - SCHEDULE OF LONG-TERM INVESTMENTS (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Components of long-term investments | ||
| Total long-term investments | $ 122,810 | $ 137,386 |
| Cost method investments | ||
| Components of long-term investments | ||
| Total long-term investments | 116,133 | 114,532 |
| Equity method investments | ||
| Components of long-term investments | ||
| Total long-term investments | 6,677 | 11,262 |
| Marketable equity security | ||
| Components of long-term investments | ||
| Total long-term investments | 0 | 7,542 |
| Auction rate security | ||
| Components of long-term investments | ||
| Total long-term investments | $ 0 | $ 4,050 |