v3.20.4

Convertible Notes (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2018 USD ($) D $ / shares $ / EquityInstruments | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Convertible Notes |  |  |  |
Gross proceeds from Convertible Notes |  | $ 0 | $ 0 | $ 195,716
Tax effect on the equity component of the Convertible Notes recorded as additional paid-in capital |  |  |  | $ 5,686
Convertible Notes |  |  |  |
Convertible Notes |  |  |  |
Gross proceeds from Convertible Notes | $ 201,250 |  |  |
Percentage of interest rate per annum | 1.00% |  |  |
Conversion ratio | 0.0236323 | 0.0236323 |  |
Conversion price per share | $ / shares | $ 42.31 |  |  |
Percentage of redemption price | 100.00% |  |  |
Threshold percentage of stock price trigger | 130.00% |  |  |
Threshold trading days | D | 20 |  |  |
Threshold consecutive trading days | D | 30 |  |  |
Convertible Notes | Call option |  |  |  |
Convertible Notes |  |  |  |
Derivative cap price (in dollars per share) | $ / EquityInstruments | 65.10 |  |  |
Payment of derivative capped transactions | $ 23,969 |  |  |
Tax effect on the equity component of the Convertible Notes recorded as additional paid-in capital | $ 5,686 |  |  |

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