0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Unaudited Interim Condensed Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Unaudited Interim Condensed Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Unaudited Interim Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Unaudited Interim Condensed Consolidated Statements of Stockholders’ Equity link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Unaudited Interim Condensed Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952156 - Disclosure - Description of Business and Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952157 - 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Disclosure - Other Assets (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Accrued Expenses and Other Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Surplus Note (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Loss and Loss Adjustment Expense Reserves (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Reinsurance (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Geographical Breakdown of Gross Written Premium (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Stockholders’ Equity (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Net Income (Loss) Per Share Attributable to Common Stockholders (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Investments - Fixed Maturities Securities and Short-term Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Investments - Fixed Maturities Securities and Short-term Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Investments - Continuous Loss Position (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Investments - Contractual Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Investments - Net Investment Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Investments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Fair Value Measurement - Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Fair Value Measurement - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Capitalized Internal Use Software (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Other Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Accrued Expenses and Other Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Surplus Note - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Surplus Note - Carrying Amount of Surplus Note (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Loss and Loss Adjustment Expense Reserves - Reconciliation of Losses and Loss Adjustment Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Loss and Loss Adjustment Expense Reserves - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Reinsurance - Summary of Effects of Reinsurance (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Reinsurance - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Geographical Breakdown of Gross Written Premium (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Commitments and Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Stockholders' Equity - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Stockholders’ Equity - Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Stockholders’ Equity - Restricted Stock Units and Performance Restricted Stock Units Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Stockholders’ Equity - Share-based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Net Income (Loss) Per Share Attributable to Common Stockholders - Computation (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Net Income (Loss) Per Share Attributable to Common Stockholders - Antidilutive Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Segments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink