SHARE-BASED COMPENSATION (Summary of Restricted Stock Unit Activity) (Details) - shares |
8 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Number of RSU | ||||
| Expired | (52,800) | (96,796) | (21,650) | |
| RSU of share-based compensation plan A and B [Member] | ||||
| Number of RSU | ||||
| Outstanding | 1,102,200 | 1,574,000 | 581,650 | |
| Granted | 20,000 | 1,217,600 | ||
| Exercised | (52,300) | (237,400) | (173,350) | |
| Expired | (18,800) | (26,500) | ||
| Forfeited | (172,700) | (227,900) | (51,900) | |
| Outstanding | 858,400 | 858,400 | 1,102,200 | 1,574,000 |
| RSU of share-based compensation plan C [Member] | ||||
| Number of RSU | ||||
| Outstanding | 6,698,000 | |||
| Granted | 9,477,000 | |||
| Exercised | (47,700) | |||
| Forfeited | (667,500) | |||
| Outstanding | 15,459,800 | 15,459,800 | ||