Description of Business and Summary of Significant Accounting Policies - Description of Business (Details) policy in Thousands	Sep. 30, 2023 policy company
Common Stock and Redeemable Convertible Preferred Stock
Number of companies, service provided	31,000
Minimum
Common Stock and Redeemable Convertible Preferred Stock
Number of insurance and warranty policies in force | policy	334
Number of insurance companies served	29