Shareholders' Equity and Noncontrolling Interest - Shareholders' Equity (Details) - Common Stock Class A |
Mar. 07, 2018
USD ($)
shares
|
|---|---|
| Public Offering | |
| Class of Stock [Line Items] | |
| Shares issued in transaction (in shares) | shares | 25,000,000 |
| Gross proceeds | $ | $ 0 |
| Conversion of Class C Common Stock to Class A Common Stock | |
| Class of Stock [Line Items] | |
| Conversion of class b preferred to class a common (in shares) | shares | 3,347,647 |
| Income tax benefit as a result of the conversion of shares from stock-based compensation | $ | $ 6,700,000 |