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Summary of Significant Accounting Policies - Advertising Costs (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Summary of Significant Accounting Policies        
Advertising costs $ 0.9 $ 2.7 $ 6.1 $ 8.8