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Earnings Per Share - Additional Information (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Feb. 24, 2021 | Dec. 31, 2020
Stock Options |  |  |  |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |  |  |
Antidilutive securities excluded from computation of earnings per share | 1,987,513 | 1,996,201 | 2,096,927 | 1,921,600 |  |
Restricted Stock Award |  |  |  |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |  |  |
Antidilutive securities excluded from computation of earnings per share | 805,532 | 1,810,572 | 1,171,930 | 1,610,107 |  |
Common Shares Conversion Option Embedded in Convertible Notes |  |  |  |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |  |  |
Antidilutive securities excluded from computation of earnings per share | 24,900,000 |  | 19,700,000 |  |  |
6.50% Exchangeable Senior Notes due 2026 |  |  |  |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |  |  |
Stated interest rate | 6.50% |  | 6.50% |  |  |
Debt instrument, face amount |  |  |  |  | $ 230,000,000 |
Convertible Notes | 6.50% Exchangeable Senior Notes due 2026 |  |  |  |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |  |  |
Stated interest rate | 6.50% |  | 6.50% |  | 6.50% | 6.50%
Debt instrument, face amount |  |  |  |  | $ 230,000,000 |

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