Income Taxes - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Domestic Tax Authority | |||
| Income Tax [Line Items] | |||
| Operating loss carryforwards | $ 417.4 | ||
| State | |||
| Income Tax [Line Items] | |||
| Operating loss carryforwards | 78.2 | ||
| Conversion of common shares from Class C to Class A | Common Class A | |||
| Income Tax [Line Items] | |||
| Conversion of Convertible Securities, Income Tax Expense (Benefit) | $ 17.5 | $ 7.2 | $ 20.0 |