CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (Parenthetical) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Class A common stock | Dividend declared | |||
| Cash dividend declared (in dollars per share) | $ 0.03 | $ 0.20 | $ 0.20 |
| Class A common stock | Special dividends | |||
| Cash dividend declared (in dollars per share) | 1.55 | ||
| Class B common stock | Dividend declared | |||
| Cash dividend declared (in dollars per share) | $ 0.03 | $ 0.20 | 0.20 |
| Class B common stock | Special dividends | |||
| Cash dividend declared (in dollars per share) | $ 1.55 | ||