SUBSEQUENT EVENTS (Details) - USD ($) $ / shares in Units, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
Feb. 26, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Subsequent Events | ||||
| Subsequent Events | ||||
| Decrease in declared dividend (in dollars per share) | $ 0.17 | |||
| Historical dividend amount (in dollars per share) | $ 0.20 | |||
| Decrease in declared dividends | $ 18.0 | |||
| Class A common stock | ||||
| Subsequent Events | ||||
| Cash dividend declared (in dollars per share) | $ 0.20 | $ 0.20 | $ 0.20 | |
| Class A common stock | Subsequent Events | ||||
| Subsequent Events | ||||
| Cash dividend declared (in dollars per share) | $ 0.03 | |||
| Class B common stock | ||||
| Subsequent Events | ||||
| Cash dividend declared (in dollars per share) | $ 0.20 | $ 0.20 | $ 0.20 | |
| Class B common stock | Subsequent Events | ||||
| Subsequent Events | ||||
| Cash dividend declared (in dollars per share) | $ 0.03 | |||