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Earnings (Loss) Per Share (Details 3) - 1.375% Convertible senior notes due 2023 - Convertible senior notes - $ / shares shares in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Dilutive shares included in calculation of earnings per share |  |  |  |
Initial conversion price of notes (in dollars per share) | $ 18.93 | $ 18.93 | $ 18.93 | $ 18.93
Potential incremental common shares attributable to dilutive effect of conversion of convertible notes | 0.6 | 0.5 |  | 0.5
Potential cumulative common shares attributable to dilutive effect of conversion of convertible notes payable |  |  | 2.6 |

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