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Unpaid Claims and Claim Expenses - Incurred and Paid Claims by Accident Year on a Net Basis (Details) $ in Thousands | Dec. 31, 2020 USD ($) claim | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($)
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Homeowners |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 1,270,282 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 1,214,781 |  |  |  |  |  |  |  |  |
Outstanding prior to 2011 | 32 |  |  |  |  |  |  |  |  |
Prior years paid |  |  |  |  |  |  |  |  |  |
Liabilities for claims and claim adjustment expenses, net of reinsurance | 55,533 |  |  |  |  |  |  |  |  |
Homeowners | 2011 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 148,067 | $ 148,067 | $ 148,079 | $ 148,370 | $ 148,414 | $ 148,755 | $ 148,860 | $ 150,791 | $ 150,334 | $ 150,141
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 29,532,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 148,067 | 148,067 | 148,069 | 148,014 | 148,026 | 147,451 | 146,908 | 145,852 | 142,846 | 123,046
Homeowners | 2012 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 106,032 | 106,028 | 106,000 | 106,348 | 106,308 | 106,486 | 109,360 | 109,156 | 108,754 |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 21,578,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 106,025 | 106,021 | 105,993 | 105,909 | 105,561 | 105,156 | 104,203 | 101,566 | 84,260 |
Homeowners | 2013 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 101,711 | 101,709 | 101,769 | 102,345 | 102,407 | 103,982 | 107,489 | 105,584 |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 19,222,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 101,711 | 101,709 | 101,677 | 101,527 | 100,968 | 99,361 | 96,599 | 76,890 |  |
Homeowners | 2014 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 106,414 | 106,458 | 106,554 | 106,844 | 109,059 | 113,505 | 111,647 |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 20,084,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 106,419 | 106,388 | 106,258 | 106,081 | 105,704 | 103,030 | 83,314 |  |  |
Homeowners | 2015 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 114,942 | 115,050 | 114,053 | 114,404 | 115,134 | 111,706 |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 67 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 18,716,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 114,861 | 114,648 | 113,321 | 111,882 | 109,303 | 90,704 |  |  |  |
Homeowners | 2016 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 117,940 | 117,933 | 117,009 | 118,604 | 115,931 |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 241 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 19,860,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 117,688 | 117,537 | 115,053 | 113,186 | 95,772 |  |  |  |  |
Homeowners | 2017 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 130,693 | 132,666 | 129,818 | 126,285 |  |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 585 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 19,850,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 130,017 | 129,767 | 128,518 | 106,800 |  |  |  |  |  |
Homeowners | 2018 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 158,861 | 157,404 | 166,793 |  |  |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 1,352 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 21,037,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 157,004 | 152,356 | 130,548 |  |  |  |  |  |  |
Homeowners | 2019 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 129,901 | 130,391 |  |  |  |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 1,949 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 17,463,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 126,208 | 103,790 |  |  |  |  |  |  |  |
Homeowners | 2020 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 155,721 |  |  |  |  |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 32,267 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 18,229,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 106,781 |  |  |  |  |  |  |  |  |
Automobile liability |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 1,659,290 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 1,480,265 |  |  |  |  |  |  |  |  |
Outstanding prior to 2011 | 724 |  |  |  |  |  |  |  |  |
Prior years paid |  |  |  |  |  |  |  |  |  |
Liabilities for claims and claim adjustment expenses, net of reinsurance | 179,749 |  |  |  |  |  |  |  |  |
Automobile liability | 2011 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 139,530 | 138,849 | 138,949 | 138,891 | 139,840 | 142,488 | 143,133 | 145,735 | 146,713 | 150,803
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 90 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 46,163,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 138,708 | 138,692 | 138,689 | 138,358 | 138,151 | 136,906 | 133,931 | 126,812 | 108,837 | 61,070
Automobile liability | 2012 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 145,946 | 145,515 | 145,620 | 145,847 | 147,594 | 149,346 | 150,336 | 153,815 | 156,448 |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 233 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 46,008,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 145,256 | 145,184 | 145,121 | 144,622 | 142,916 | 138,641 | 127,185 | 109,574 | 61,279 |
Automobile liability | 2013 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 148,288 | 148,135 | 147,993 | 148,111 | 150,657 | 150,720 | 152,858 | 153,860 |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 668 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 47,336,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 147,443 | 147,409 | 146,770 | 145,291 | 139,954 | 131,214 | 108,856 | 62,224 |  |
Automobile liability | 2014 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 159,263 | 159,355 | 159,794 | 159,937 | 158,470 | 157,249 | 155,105 |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 62 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 49,347,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 158,644 | 157,596 | 155,758 | 149,059 | 139,463 | 117,468 | 61,329 |  |  |
Automobile liability | 2015 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 179,186 | 178,654 | 178,325 | 177,021 | 172,553 | 165,517 |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 828 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 50,579,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 176,728 | 174,495 | 170,088 | 157,980 | 134,473 | 70,836 |  |  |  |
Automobile liability | 2016 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 188,079 | 186,568 | 184,567 | 184,440 | 180,380 |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 805 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 52,003,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 184,489 | 177,834 | 166,815 | 140,901 | 73,073 |  |  |  |  |
Automobile liability | 2017 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 189,095 | 188,625 | 188,756 | 187,983 |  |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 3,321 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 48,876,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 179,782 | 166,614 | 139,531 | 70,682 |  |  |  |  |  |
Automobile liability | 2018 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 192,866 | 195,284 | 200,314 |  |  |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 12,931 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 47,684,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 168,628 | 141,537 | 77,528 |  |  |  |  |  |  |
Automobile liability | 2019 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 180,060 | 181,141 |  |  |  |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 29,004 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 45,915,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 129,101 | 69,665 |  |  |  |  |  |  |  |
Automobile liability | 2020 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 136,977 |  |  |  |  |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 51,452 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 30,032,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 51,486 |  |  |  |  |  |  |  |  |
Automobile physical damage |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 975,667 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 972,966 |  |  |  |  |  |  |  |  |
Outstanding prior to 2011 | 10 |  |  |  |  |  |  |  |  |
Prior years paid |  |  |  |  |  |  |  |  |  |
Liabilities for claims and claim adjustment expenses, net of reinsurance | 2,711 |  |  |  |  |  |  |  |  |
Automobile physical damage | 2011 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 85,089 | 85,090 | 85,102 | 85,108 | 85,116 | 85,143 | 85,120 | 86,023 | 85,507 | 86,205
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 80,804,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 85,082 | 85,090 | 85,095 | 85,108 | 85,116 | 85,127 | 85,148 | 85,181 | 85,254 | $ 83,227
Automobile physical damage | 2012 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 83,323 | 83,322 | 83,334 | 83,342 | 83,354 | 83,431 | 83,402 | 82,337 | 83,770 |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 78,166,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 83,318 | 83,322 | 83,326 | 83,342 | 83,347 | 83,355 | 83,372 | 83,418 | $ 80,519 |
Automobile physical damage | 2013 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 88,452 | 88,457 | 88,525 | 88,455 | 88,627 | 88,672 | 88,856 | 91,448 |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 80,920,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 88,442 | 88,452 | 88,471 | 88,484 | 88,532 | 88,580 | 88,688 | $ 85,110 |  |
Automobile physical damage | 2014 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 95,242 | 95,241 | 95,232 | 95,239 | 95,422 | 95,634 | 95,572 |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 87,901,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 95,228 | 95,243 | 95,258 | 95,256 | 95,266 | 95,444 | $ 88,939 |  |  |
Automobile physical damage | 2015 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 97,608 | 97,612 | 97,455 | 97,624 | 97,994 | 99,291 |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ 0 |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 87,502,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 97,608 | 97,625 | 97,638 | 97,685 | 97,850 | $ 92,138 |  |  |  |
Automobile physical damage | 2016 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 109,597 | 109,603 | 109,348 | 109,515 | 112,430 |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ (18) |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 93,229,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 109,589 | 109,611 | 109,536 | 109,686 | $ 106,459 |  |  |  |  |
Automobile physical damage | 2017 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 110,569 | 110,520 | 111,798 | 115,483 |  |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ (17) |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 91,290,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 110,630 | 110,674 | 110,817 | $ 105,156 |  |  |  |  |  |
Automobile physical damage | 2018 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 108,333 | 108,886 | 109,040 |  |  |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ (161) |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 94,458,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 108,272 | 109,103 | $ 103,559 |  |  |  |  |  |  |
Automobile physical damage | 2019 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 110,495 | 111,577 |  |  |  |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ (326) |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 92,068,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 110,692 | $ 106,243 |  |  |  |  |  |  |  |
Automobile physical damage | 2020 |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |  |  |  |  |  |  |  |  |  |
Incurred Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | 86,959 |  |  |  |  |  |  |  |  |
Total of Incurred- But-Not-Reported Liabilities Plus Expected Development on Reported Claims | $ (6,829) |  |  |  |  |  |  |  |  |
Cumulative Number of Reported Claims | claim | 66,650,000 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net of Reinsurance | $ 84,105 |  |  |  |  |  |  |  |  |

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