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v3.21.2

Convertible Senior Notes (Details) | 1 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Aug. 31, 2019 USD ($) day $ / shares | Sep. 30, 2021 USD ($) $ / shares | Dec. 31, 2020 $ / shares
Class A Common Stock |  |  |
Debt Instrument [Line Items] |  |  |
Common stock, par value (in dollars per share) | $ / shares | $ 0.001 | $ 0.001 | $ 0.001
Convertible debt | 1.125% Convertible Senior Notes Due 2026 |  |  |
Debt Instrument [Line Items] |  |  |
Face amount of debt issued | $ | $ 345,000,000 |  |
Stated interest percentage | 1.125% |  |
Proceeds from the issuance of convertible senior notes, net of issuance costs | $ | $ 335,900,000 |  |
Conversion ratio | 0.0124756 |  |
Conversion price (in dollars per share) | $ / shares | $ 80.16 |  |
Threshold number of trading days (day) | 20 |  |
Threshold number of consecutive trading days (day) | 30 |  |
Threshold percentage of stock price trigger | 130.00% |  |
Redemption price, percentage | 100.00% |  |
Effective interest percentage | 4.30% |  |
If-converted value in excess of principal | $ |  | $ 261,700,000 |
Remaining life of debt instrument |  | 4 years 9 months 18 days |
Convertible debt | 1.125% Convertible Senior Notes Due 2026 | Debt Conversion Terms, One |  |  |
Debt Instrument [Line Items] |  |  |
Threshold number of trading days (day) | 20 |  |
Threshold number of consecutive trading days (day) | 30 |  |
Threshold percentage of stock price trigger | 130.00% |  |
Convertible debt | 1.125% Convertible Senior Notes Due 2026 | Debt Conversion Terms, Two |  |  |
Debt Instrument [Line Items] |  |  |
Threshold number of trading days (day) | 5 |  |
Threshold number of consecutive trading days (day) | 10 |  |
Threshold percentage of stock trading price | 98.00% |  |
Convertible debt | Over-allotment option |  |  |
Debt Instrument [Line Items] |  |  |
Face amount of debt issued | $ | $ 45,000,000 |  |

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