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Basis of Presentation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 3 Months Ended
--- | --- | --- | --- | ---
Jan. 26, 2021 | Nov. 17, 2020 | Sep. 25, 2020 | Mar. 31, 2021 | Mar. 31, 2020
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Payments of debt issuance costs |  |  |  | $ 3,777 | $ 0
Class B Common Stock | Public Stock Offering - Shares From Existing Shareholders |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Number of shares sold (in shares) |  |  | 12,360,991 |  |
Price per share sold (USD per share) |  |  | $ 22.00 |  |
Class B Common Stock | Follow-On Offering |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Number of shares sold (in shares) |  | 11,500,000 |  |  |
Price per share sold (USD per share) |  | $ 32.00 |  |  |
Class B Common Stock | Follow-On Offering, Sold By Company |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Number of shares sold (in shares) |  | 9,603,965 |  |  |
Class B Common Stock | Follow-On Offering, Exercise By Underwriters |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Number of shares sold (in shares) |  | 1,500,000 |  |  |
Class B Common Stock | Follow-On Offering, Shares From Existing Shareholders |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Number of shares sold (in shares) |  | 1,896,035 |  |  |
Proceeds from issuance of common stock |  | $ 294,429 |  |  |
Expenses associated with sale of stock |  | $ 12,898 |  |  |
2026 Notes | Convertible Debt |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Debt instrument, face amount | $ 690,000 |  |  |  |
Debt instrument, interest rate, stated percentage | 0.125% |  |  |  |
Payments of debt issuance costs | $ 18,055 |  |  |  |
Payments of expenses associated with initial public offering | $ 25,530 |  |  |  |

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