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v3.19.1

Insurance Reserves and Policyholder Funds, Liability for Unpaid Losses, Claims and Loss Adjustment Expenses (Details) $ in Thousands | 12 Months Ended |  |  |  |  |  |  |  |  |
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Dec. 31, 2018 USD ($) Claim | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($) | Dec. 31, 2010 USD ($) | Dec. 31, 2009 USD ($)
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Liabilities for losses, claims and loss adjustment expenses, net of reinsurance | $ 56,565 |  |  |  |  |  |  |  |  |
Duration required for loss data to develop the estimated ultimate incurred claims | 36 months |  |  |  |  |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Property and casualty claim threshold amount required for review | $ 25,000 |  |  |  |  |  |  |  |  |
Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 534,979 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | 522,266 |  |  |  |  |  |  |  |  |
Liabilities for losses, claims and loss adjustment expenses, net of reinsurance | 12,713 |  |  |  |  |  |  |  |  |
Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 178,100 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | 144,156 |  |  |  |  |  |  |  |  |
Liabilities for losses, claims and loss adjustment expenses, net of reinsurance | 33,944 |  |  |  |  |  |  |  |  |
Automobile Physical Damage [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 35,547 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | 34,063 |  |  |  |  |  |  |  |  |
All outstanding liabilities prior period net of reinsurance | 0 |  |  |  |  |  |  |  |  |
Liabilities for losses, claims and loss adjustment expenses, net of reinsurance | 1,484 |  |  |  |  |  |  |  |  |
General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 12,230 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | 9,538 |  |  |  |  |  |  |  |  |
All outstanding liabilities prior period net of reinsurance | 402 |  |  |  |  |  |  |  |  |
Liabilities for losses, claims and loss adjustment expenses, net of reinsurance | 3,094 |  |  |  |  |  |  |  |  |
Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 34,040 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | 30,831 |  |  |  |  |  |  |  |  |
All outstanding liabilities prior period net of reinsurance | 3 |  |  |  |  |  |  |  |  |
Liabilities for losses, claims and loss adjustment expenses, net of reinsurance | 3,212 |  |  |  |  |  |  |  |  |
Accident Year 2009 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 30,430 | $ 30,430 | $ 30,430 | $ 30,431 | $ 30,432 | $ 30,438 | $ 30,447 | $ 30,481 | $ 30,455 | $ 31,124
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 560,430 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 30,430 | 30,430 | 30,430 | 30,431 | 30,432 | 30,438 | 30,447 | 30,481 | 30,455 | 29,866
Accident Year 2009 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 8,153 | 8,153 | 8,154 | 8,155 | 8,123 | 8,245 | 8,558 | 8,659 | 8,891 | 10,817
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,755 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 8,153 | 8,153 | 8,154 | 8,155 | 8,123 | 7,995 | 7,502 | 6,353 | 5,208 | 3,250
Accident Year 2009 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 1,921 | 1,888 | 1,832 | 1,828 | 1,727 | 1,702 | 1,730 | 1,944 | 2,215 | 3,392
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 290 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 1,921 | 1,855 | 1,816 | 1,796 | 1,662 | 1,629 | 1,410 | 1,082 | 941 | 476
Accident Year 2009 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 4,590 | 4,667 | 4,664 | 4,916 | 4,636 | 3,616 | 3,951 | 4,239 | 5,025 | 4,920
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 84 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 4,590 | 4,666 | 4,663 | 3,757 | 3,760 | 3,410 | 3,205 | 2,640 | 1,595 | $ 103
Accident Year 2010 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 34,264 | 34,265 | 34,268 | 34,272 | 34,282 | 34,303 | 34,323 | 34,328 | 34,849 |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 625,698 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 34,264 | 34,265 | 34,268 | 34,272 | 34,282 | 34,303 | 34,323 | 34,328 | 29,127 |
Accident Year 2010 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 10,209 | 10,201 | 10,202 | 10,185 | 10,068 | 9,937 | 10,547 | 10,818 | 10,752 |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,947 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 10,210 | 10,206 | 10,090 | 10,056 | 9,725 | 9,382 | 8,291 | 6,274 | 3,211 |
Accident Year 2010 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 2,480 | 2,473 | 2,423 | 2,400 | 2,258 | 2,337 | 2,269 | 2,699 | 4,114 |
IBNR Reserves | $ 4 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 289 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 2,463 | 2,457 | 2,382 | 2,368 | 2,037 | 1,542 | 1,374 | 678 | 284 |
Accident Year 2010 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 3,530 | 3,534 | 3,563 | 3,549 | 3,607 | 3,396 | 3,618 | 4,624 | 3,995 |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 95 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 3,530 | 3,534 | 3,560 | 3,545 | 3,252 | 2,943 | 2,780 | 2,193 | $ 928 |
Accident Year 2011 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 38,297 | 38,299 | 38,302 | 38,316 | 38,327 | 38,360 | 38,296 | 38,188 |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 664,056 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 38,297 | 38,299 | 38,302 | 38,316 | 38,327 | 38,360 | 38,296 | 31,720 |  |
Accident Year 2011 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 13,330 | 13,385 | 13,495 | 13,281 | 13,289 | 13,235 | 13,802 | 12,263 |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 2,132 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 13,330 | 13,199 | 13,106 | 13,039 | 12,071 | 9,858 | 7,934 | 4,205 |  |
Accident Year 2011 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 1,335 | 1,327 | 1,242 | 1,174 | 1,338 | 1,452 | 1,723 | 3,022 |  |
IBNR Reserves | $ 12 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 204 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 1,285 | 1,278 | 1,169 | 1,161 | 835 | 582 | 412 | 295 |  |
Accident Year 2011 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 5,111 | 5,112 | 5,031 | 4,966 | 5,092 | 5,080 | 4,786 | 4,422 |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 126 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 5,111 | 5,109 | 5,022 | 4,939 | 4,748 | 4,622 | 3,207 | $ 1,031 |  |
Accident Year 2012 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 50,985 | 50,987 | 50,989 | 50,998 | 51,021 | 50,996 | 50,021 |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 867,050 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 50,985 | 50,987 | 50,989 | 50,998 | 51,021 | 50,996 | 42,267 |  |  |
Accident Year 2012 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 13,357 | 13,343 | 13,313 | 13,707 | 14,108 | 15,007 | 12,980 |  |  |
IBNR Reserves | $ 12 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 2,343 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 13,288 | 13,211 | 13,197 | 12,932 | 11,507 | 8,791 | 4,627 |  |  |
Accident Year 2012 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 1,344 | 1,333 | 1,214 | 1,270 | 1,269 | 1,305 | 4,055 |  |  |
IBNR Reserves | $ 19 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 158 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 1,260 | 1,219 | 1,113 | 1,034 | 847 | 707 | 371 |  |  |
Accident Year 2012 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 4,892 | 4,880 | 4,869 | 5,345 | 5,396 | 4,767 | 4,979 |  |  |
IBNR Reserves | $ 2 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 89 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 4,878 | 4,880 | 4,869 | 5,331 | 4,856 | 4,581 | $ 2,257 |  |  |
Accident Year 2013 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 57,016 | 57,021 | 57,023 | 57,034 | 56,970 | 56,974 |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 957,362 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 57,016 | 57,021 | 57,023 | 57,034 | 56,970 | 47,770 |  |  |  |
Accident Year 2013 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 21,020 | 21,352 | 21,823 | 21,096 | 20,702 | 18,664 |  |  |  |
IBNR Reserves | $ 7 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 3,265 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 20,982 | 20,382 | 19,407 | 16,782 | 12,193 | 5,144 |  |  |  |
Accident Year 2013 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 820 | 865 | 817 | 926 | 728 | 3,461 |  |  |  |
IBNR Reserves | $ 4 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 187 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 803 | 791 | 811 | 579 | 339 | 104 |  |  |  |
Accident Year 2013 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 2,809 | 2,866 | 2,947 | 2,743 | 2,007 | 3,060 |  |  |  |
IBNR Reserves | $ 10 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 58 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 2,749 | 2,789 | 2,763 | 1,369 | 1,010 | $ 323 |  |  |  |
Accident Year 2014 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 56,976 | 56,981 | 56,981 | 56,938 | 57,179 |  |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 939,472 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 56,976 | 56,981 | 56,981 | 56,938 | 48,024 |  |  |  |  |
Accident Year 2014 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 21,682 | 22,353 | 22,041 | 21,881 | 20,812 |  |  |  |  |
IBNR Reserves | $ 134 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 3,541 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 20,878 | 20,177 | 17,554 | 13,807 | 6,822 |  |  |  |  |
Accident Year 2014 [Member] | Automobile Physical Damage [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 7,561 | 7,562 | 7,583 | 7,657 | 8,079 |  |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,635 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 7,561 | 7,562 | 7,570 | 7,619 | 6,437 |  |  |  |  |
Accident Year 2014 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 406 | 476 | 557 | 501 | 3,744 |  |  |  |  |
IBNR Reserves | $ 8 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 192 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 373 | 369 | 331 | 299 | 171 |  |  |  |  |
Accident Year 2014 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 2,685 | 2,760 | 2,990 | 3,130 | 3,214 |  |  |  |  |
IBNR Reserves | $ 4 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 53 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 2,664 | 2,739 | 2,727 | 2,327 | $ 1,331 |  |  |  |  |
Accident Year 2015 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 54,990 | 54,993 | 54,939 | 55,482 |  |  |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 898,370 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 54,990 | 54,993 | 54,876 | 45,430 |  |  |  |  |  |
Accident Year 2015 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 20,007 | 20,017 | 19,857 | 18,521 |  |  |  |  |  |
IBNR Reserves | $ 898 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 3,521 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 17,612 | 14,938 | 11,878 | 6,226 |  |  |  |  |  |
Accident Year 2015 [Member] | Automobile Physical Damage [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 7,896 | 7,887 | 7,955 | 8,287 |  |  |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,588 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 7,895 | 7,885 | 7,937 | 6,745 |  |  |  |  |  |
Accident Year 2015 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 1,044 | 1,227 | 1,037 | 4,421 |  |  |  |  |  |
IBNR Reserves | $ 143 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 144 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 664 | 464 | 259 | 98 |  |  |  |  |  |
Accident Year 2015 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 1,359 | 1,400 | 1,630 | 1,902 |  |  |  |  |  |
IBNR Reserves | $ 39 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 49 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 1,125 | 1,127 | 856 | $ 641 |  |  |  |  |  |
Accident Year 2016 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 63,226 | 59,851 | 58,849 |  |  |  |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,036,748 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 63,226 | 59,747 | 49,165 |  |  |  |  |  |  |
Accident Year 2016 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 21,846 | 21,275 | 20,549 |  |  |  |  |  |  |
IBNR Reserves | $ 2,043 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 3,822 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 16,397 | 13,141 | 6,796 |  |  |  |  |  |  |
Accident Year 2016 [Member] | Automobile Physical Damage [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 6,352 | 6,386 | 6,877 |  |  |  |  |  |  |
IBNR Reserves | $ 1 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,267 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 6,349 | 6,353 | 5,804 |  |  |  |  |  |  |
Accident Year 2016 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 736 | 1,148 | 3,119 |  |  |  |  |  |  |
IBNR Reserves | $ 80 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 84 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 568 | 203 | 116 |  |  |  |  |  |  |
Accident Year 2016 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 1,865 | 1,812 | 3,314 |  |  |  |  |  |  |
IBNR Reserves | $ 27 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 46 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 1,772 | 1,732 | $ 1,054 |  |  |  |  |  |  |
Accident Year 2017 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 69,655 | 67,960 |  |  |  |  |  |  |  |
IBNR Reserves | $ 130 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,510,485 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 69,517 | 57,696 |  |  |  |  |  |  |  |
Accident Year 2017 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 24,212 | 22,179 |  |  |  |  |  |  |  |
IBNR Reserves | $ 2,961 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 3,719 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 16,317 | 7,401 |  |  |  |  |  |  |  |
Accident Year 2017 [Member] | Automobile Physical Damage [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 5,933 | 6,257 |  |  |  |  |  |  |  |
IBNR Reserves | $ 2 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,316 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 5,914 | 5,215 |  |  |  |  |  |  |  |
Accident Year 2017 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 488 | 1,490 |  |  |  |  |  |  |  |
IBNR Reserves | $ 184 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 72 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 136 | 75 |  |  |  |  |  |  |  |
Accident Year 2017 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 3,671 | 4,677 |  |  |  |  |  |  |  |
IBNR Reserves | $ 203 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 57 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 3,255 | $ 1,971 |  |  |  |  |  |  |  |
Accident Year 2018 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 79,140 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 11,584 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,781,051 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 66,565 |  |  |  |  |  |  |  |  |
Accident Year 2018 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 24,284 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 7,466 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 3,205 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 6,989 |  |  |  |  |  |  |  |  |
Accident Year 2018 [Member] | Automobile Physical Damage [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 7,805 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 145 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,343 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 6,344 |  |  |  |  |  |  |  |  |
Accident Year 2018 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 1,656 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 1,519 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 42 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 65 |  |  |  |  |  |  |  |  |
Accident Year 2018 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance | 3,528 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 1,872 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 59 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance | $ 1,157 |  |  |  |  |  |  |  |  |

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