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Long-Term Debt - 2026 Capped Calls (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Debt Instrument [Line Items] |  |  |
Aggregate cost of capped call transactions | $ 10,625 |  | $ 10,625
2026 Capped Calls |  |  |
Debt Instrument [Line Items] |  |  |
Aggregate number of common shares subject to capped calls |  | 28,675,900 |
Initial strike price |  | $ 6.97 |
Initial cap price |  | $ 8.42 |
Aggregate cost of capped call transactions |  | $ 10,600 |

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