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Fair-Value Measurements - Narrative (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2020 | Nov. 30, 2018
--- | --- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Cash held in demand deposit accounts | $ 11,009 | $ 100,808 |  |
2023 Unsecured Convertible Senior Notes |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Interest rate (as a percent) |  |  |  | 6.25%
2026 Unsecured Convertible Senior Notes |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Interest rate (as a percent) |  |  | 5.25% |

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