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Significant Accounting Policies (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Nov. 06, 2017
Disaggregation of Revenue |  |  |  |
Advertising costs | $ 6,700,000 | $ 3,500,000 | $ 3,900,000 |
Research and development expense | 23,300,000 | 13,500,000 | $ 12,700,000 |
Convertible notes due November 2024 | Convertible Debt |  |  |  |
Disaggregation of Revenue |  |  |  |
Debt instrument, face amount | $ 258,700,000 | $ 258,800,000 |  | $ 258,800,000
Minimum |  |  |  |
Disaggregation of Revenue |  |  |  |
Finite lived intangible asset useful life (in years) | 2 years |  |  |
Maximum |  |  |  |
Disaggregation of Revenue |  |  |  |
Finite lived intangible asset useful life (in years) | 15 years |  |  |

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