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Reserves for Unpaid Losses and Loss Adjustment Expenses - Incurred and Paid Losses (Details) - Auto $ in Thousands | Dec. 31, 2025 USD ($) claim | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
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Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Incurred losses and loss adjustment expense | $ (1,120,124) |  |  |  |
Cumulative paid losses and loss adjustment expenses from the table below | (959,584) |  |  |  |
Reserves for losses and loss adjustment expenses before 2021, net of reinsurance | 2,247 |  |  |  |
Cumulative effect of foreign currency rate changes | 91 |  |  |  |
Reserves for losses and loss adjustment expenses, undiscounted and net of reinsurance | 162,878 |  |  |  |
Reserves for Losses and Loss Adjustment Expenses Incurred But Not Reported | 70,514 |  |  |  |
Reserves for losses and loss adjustment expenses before 2021, net of reinsurance | 1,478 |  |  |  |
Reserves for losses and loss adjustment expenses, undiscounted and net of reinsurance | $ 71,992 |  |  |  |
Cumulative Number of Reported Claims | claim | 201,071 |  |  |  |
2021 |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Incurred losses and loss adjustment expense | $ 125,834 | 125,434 | $ 125,634 | $ 129,259 | $ 131,643
Cumulative paid losses and loss adjustment expenses from the table below | (123,029) | (120,094) | (114,884) | (105,475) | $ (75,933)
Reserves for Losses and Loss Adjustment Expenses Incurred But Not Reported | $ 683 |  |  |  |
Cumulative Number of Reported Claims | claim | 35,529 |  |  |  |
2022 |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Incurred losses and loss adjustment expense | $ 180,218 | 179,096 | 182,783 | 186,073 |
Cumulative paid losses and loss adjustment expenses from the table below | (174,400) | (167,200) | (155,157) | $ (109,255) |
Reserves for Losses and Loss Adjustment Expenses Incurred But Not Reported | $ 2,379 |  |  |  |
Cumulative Number of Reported Claims | claim | 39,488 |  |  |  |
2023 |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Incurred losses and loss adjustment expense | $ 232,748 | 231,209 | 228,071 |  |
Cumulative paid losses and loss adjustment expenses from the table below | (219,217) | (202,501) | $ (138,102) |  |
Reserves for Losses and Loss Adjustment Expenses Incurred But Not Reported | $ 5,205 |  |  |  |
Cumulative Number of Reported Claims | claim | 42,459 |  |  |  |
2024 |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Incurred losses and loss adjustment expense | $ 286,194 | 299,766 |  |  |
Cumulative paid losses and loss adjustment expenses from the table below | (252,153) | (186,165) |  |  |
Reserves for Losses and Loss Adjustment Expenses Incurred But Not Reported | $ 15,098 |  |  |  |
Cumulative Number of Reported Claims | claim | 43,735 |  |  |  |
2025 |  |  |  |  |
Liability for Claims and Claims Adjustment Expense [Line Items] |  |  |  |  |
Incurred losses and loss adjustment expense | $ 295,130 |  |  |  |
Cumulative paid losses and loss adjustment expenses from the table below | (190,785) |  |  |  |
Reserves for Losses and Loss Adjustment Expenses Incurred But Not Reported | $ 47,149 |  |  |  |
Cumulative Number of Reported Claims | claim | 39,860 |  |  |  |

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