SUBSEQUENT EVENTS (Details) - $ / shares |
12 Months Ended | |||
|---|---|---|---|---|
Mar. 04, 2016 |
Feb. 08, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Subsequent event | ||||
| Subsequent Events | ||||
| Special dividend declared (in dollars per share) | $ 0.80 | |||
| Dividends declared per share | $ 0.30 | |||
| Class A common stock | ||||
| Subsequent Events | ||||
| Dividends declared per share | $ 1.00 | $ 1.40 | ||
| Class A common stock | Subsequent event | ||||
| Subsequent Events | ||||
| Dividends declared per share | $ 1.10 | |||