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Summary of Significant Accounting Policies - Research and Development Costs (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Finite-Lived Intangible Assets |  |
Capitalized internal-use software | $ 10.1 | $ 4.0
Capitalized software |  |
Finite-Lived Intangible Assets |  |
Estimated useful lives of assets | 3 years |

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