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v3.6.0.2

Insurance Reserves and Policyholder Funds, Liability for Unpaid Losses, Claims and Loss Adjustment Expenses (Details) $ in Thousands | 12 Months Ended |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2016 USD ($) Claim | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($) | Dec. 31, 2010 USD ($) | Dec. 31, 2009 USD ($) | Dec. 31, 2008 USD ($) | Dec. 31, 2007 USD ($)
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance | $ 50,343 |  |  |  |  |  |  |  |  |
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 claims and allocated claim adjustment expenses, net of reinsurance | 439,674 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | 429,927 |  |  |  |  |  |  |  |  |
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance | 9,747 |  |  |  |  |  |  |  |  |
Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 142,829 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | 113,577 |  |  |  |  |  |  |  |  |
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance | 29,252 |  |  |  |  |  |  |  |  |
Automobile Physical Damage [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 33,084 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | 31,977 |  |  |  |  |  |  |  |  |
All outstanding liabilities prior period net of reinsurance | 41 |  |  |  |  |  |  |  |  |
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance | 1,148 |  |  |  |  |  |  |  |  |
General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 19,391 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | 14,987 |  |  |  |  |  |  |  |  |
All outstanding liabilities prior period net of reinsurance | 238 |  |  |  |  |  |  |  |  |
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance | 4,642 |  |  |  |  |  |  |  |  |
Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 32,101 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | 28,607 |  |  |  |  |  |  |  |  |
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance | 3,494 |  |  |  |  |  |  |  |  |
Accident Year 2007 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 29,211 | $ 29,111 | $ 29,212 | $ 29,213 | $ 29,213 | $ 29,214 | $ 29,225 | $ 29,230 | $ 29,169 | $ 29,616
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 526,227 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 29,211 | 29,211 | 29,212 | 29,213 | 29,213 | 29,214 | 29,255 | 29,230 | 29,169 | 24,324
Accident Year 2007 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 7,290 | 7,303 | 7,314 | 7,299 | 7,296 | 7,253 | 7,407 | 7,415 | 6,733 | 6,711
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,663 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 7,290 | 7,249 | 7,247 | 7,230 | 7,008 | 6,824 | 6,519 | 5,957 | 4,792 | 2,631
Accident Year 2007 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 4,503 | 4,443 | 4,457 | 4,377 | 4,257 | 3,960 | 4,293 | 4,648 | 5,124 | 6,549
IBNR Reserves | $ 17 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 488 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 4,426 | 4,371 | 4,214 | 3,966 | 3,595 | 3,387 | 2,993 | 2,566 | 1,825 | 901
Accident Year 2007 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 769 | 814 | 818 | 856 | 868 | 1,084 | 983 | 893 | 1,953 | 3,287
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 37 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 769 | 814 | 816 | 853 | 849 | 937 | 698 | 664 | 519 | $ 255
Accident Year 2008 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 28,682 | 28,683 | 28,683 | 28,687 | 28,688 | 28,712 | 28,721 | 28,698 | 29,344 |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 528,104 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 28,682 | 28,683 | 28,683 | 28,687 | 28,688 | 28,712 | 28,721 | 28,698 | 24,055 |
Accident Year 2008 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 6,105 | 6,104 | 6,106 | 6,112 | 6,124 | 6,374 | 6,627 | 7,011 | 9,723 |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,534 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 6,105 | 6,104 | 6,104 | 6,065 | 5,839 | 5,695 | 5,077 | 4,202 | 2,426 |
Accident Year 2008 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 2,647 | 2,548 | 2,507 | 2,489 | 2,479 | 2,685 | 2,858 | 4,359 | 5,386 |
IBNR Reserves | $ 20 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 387 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 2,564 | 2,506 | 2,418 | 2,123 | 2,023 | 1,861 | 1,637 | 1,091 | 534 |
Accident Year 2008 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 2,324 | 2,324 | 2,360 | 2,360 | 2,312 | 2,312 | 2,420 | 2,098 | 3,883 |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 62 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 2,324 | 2,324 | 2,360 | 2,359 | 2,311 | 2,232 | 2,261 | 1,369 | $ 503 |
Accident Year 2009 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 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 | 555,808 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 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 claims and allocated claim adjustment expenses, net of reinsurance | 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 | 1,754 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 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 claims and allocated claim adjustment expenses, net of reinsurance | 1,832 | 1,828 | 1,727 | 1,702 | 1,730 | 1,944 | 2,215 | 3,392 |  |
IBNR Reserves | $ 4 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 283 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 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 claims and allocated claim adjustment expenses, net of reinsurance | 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 | 83 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 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 claims and allocated claim adjustment expenses, net of reinsurance | 34,268 | 34,272 | 34,282 | 34,303 | 34,323 | 34,328 | 34,849 |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 620,799 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 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 claims and allocated claim adjustment expenses, net of reinsurance | 10,202 | 10,185 | 10,068 | 9,937 | 10,547 | 10,818 | 10,752 |  |  |
IBNR Reserves | $ 18 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,946 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 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 claims and allocated claim adjustment expenses, net of reinsurance | 2,423 | 2,400 | 2,258 | 2,337 | 2,269 | 2,699 | 4,114 |  |  |
IBNR Reserves | $ 10 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 288 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 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 claims and allocated claim adjustment expenses, net of reinsurance | 3,563 | 3,549 | 3,607 | 3,396 | 3,618 | 4,624 | 3,995 |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 93 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 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 claims and allocated claim adjustment expenses, net of reinsurance | 38,302 | 38,316 | 38,327 | 38,360 | 38,296 | 38,188 |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 658,696 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 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 claims and allocated claim adjustment expenses, net of reinsurance | 13,495 | 13,281 | 13,289 | 13,235 | 13,802 | 12,263 |  |  |  |
IBNR Reserves | $ 65 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 2,129 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 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 claims and allocated claim adjustment expenses, net of reinsurance | 1,242 | 1,174 | 1,338 | 1,452 | 1,723 | 3,022 |  |  |  |
IBNR Reserves | $ 17 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 198 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 1,169 | 1,161 | 835 | 582 | 412 | 295 |  |  |  |
Accident Year 2011 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 5,031 | 4,966 | 5,092 | 5,080 | 4,786 | 4,422 |  |  |  |
IBNR Reserves | $ 1 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 124 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 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 claims and allocated claim adjustment expenses, net of reinsurance | 50,989 | 50,998 | 51,021 | 50,996 | 50,021 |  |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 860,258 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 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 claims and allocated claim adjustment expenses, net of reinsurance | 13,313 | 13,707 | 14,108 | 15,007 | 12,980 |  |  |  |  |
IBNR Reserves | $ 19 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 2,338 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 13,197 | 12,932 | 11,507 | 8,791 | 4,627 |  |  |  |  |
Accident Year 2012 [Member] | Automobile Physical Damage [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 5,070 | 5,070 | 5,113 | 5,114 | 5,478 |  |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,129 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 5,067 | 5,067 | 5,089 | 5,075 | 4,610 |  |  |  |  |
Accident Year 2012 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 1,214 | 1,270 | 1,269 | 1,305 | 4,055 |  |  |  |  |
IBNR Reserves | $ 23 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 155 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 1,113 | 1,034 | 847 | 707 | 371 |  |  |  |  |
Accident Year 2012 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 4,869 | 5,345 | 5,396 | 4,767 | 4,979 |  |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 86 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 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 claims and allocated claim adjustment expenses, net of reinsurance | 57,023 | 57,034 | 56,970 | 56,974 |  |  |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 949,778 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 57,023 | 57,034 | 56,970 | 47,770 |  |  |  |  |  |
Accident Year 2013 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 21,823 | 21,096 | 20,702 | 18,664 |  |  |  |  |  |
IBNR Reserves | $ 906 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 3,251 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 19,407 | 16,782 | 12,193 | 5,144 |  |  |  |  |  |
Accident Year 2013 [Member] | Automobile Physical Damage [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 5,599 | 5,536 | 5,515 | 6,039 |  |  |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,598 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 5,599 | 5,466 | 5,486 | 4,778 |  |  |  |  |  |
Accident Year 2013 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 817 | 926 | 728 | 3,461 |  |  |  |  |  |
IBNR Reserves | $ 2 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 186 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 811 | 579 | 339 | 104 |  |  |  |  |  |
Accident Year 2013 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 2,947 | 2,743 | 2,007 | 3,060 |  |  |  |  |  |
IBNR Reserves | $ 31 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 56 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 2,763 | 1,369 | 1,010 | $ 323 |  |  |  |  |  |
Accident Year 2014 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 56,981 | 56,938 | 57,179 |  |  |  |  |  |  |
IBNR Reserves | $ 0 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 933,020 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 56,981 | 56,938 | 48,024 |  |  |  |  |  |  |
Accident Year 2014 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 22,041 | 21,881 | 20,812 |  |  |  |  |  |  |
IBNR Reserves | $ 1,683 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 3,522 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 17,554 | 13,807 | 6,822 |  |  |  |  |  |  |
Accident Year 2014 [Member] | Automobile Physical Damage [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 7,583 | 7,657 | 8,079 |  |  |  |  |  |  |
IBNR Reserves | $ 1 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,633 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 7,570 | 7,619 | 6,437 |  |  |  |  |  |  |
Accident Year 2014 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 557 | 501 | 3,744 |  |  |  |  |  |  |
IBNR Reserves | $ 128 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 189 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 331 | 299 | 171 |  |  |  |  |  |  |
Accident Year 2014 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 2,990 | 3,130 | 3,214 |  |  |  |  |  |  |
IBNR Reserves | $ 75 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 46 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 2,727 | 2,327 | $ 1,331 |  |  |  |  |  |  |
Accident Year 2015 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 54,939 | 55,482 |  |  |  |  |  |  |  |
IBNR Reserves | $ 62 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 890,878 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 54,876 | 45,430 |  |  |  |  |  |  |  |
Accident Year 2015 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 19,857 | 18,521 |  |  |  |  |  |  |  |
IBNR Reserves | $ 2,992 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 3,431 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 11,878 | 6,226 |  |  |  |  |  |  |  |
Accident Year 2015 [Member] | Automobile Physical Damage [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 7,955 | 8,287 |  |  |  |  |  |  |  |
IBNR Reserves | $ 2 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,583 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 7,937 | 6,745 |  |  |  |  |  |  |  |
Accident Year 2015 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 1,037 | 4,421 |  |  |  |  |  |  |  |
IBNR Reserves | $ 467 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 136 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 259 | 98 |  |  |  |  |  |  |  |
Accident Year 2015 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 1,630 | 1,902 |  |  |  |  |  |  |  |
IBNR Reserves | $ 377 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 48 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 856 | $ 641 |  |  |  |  |  |  |  |
Accident Year 2016 [Member] | Medicare Supplement [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 58,849 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 9,520 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 879,603 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 49,165 |  |  |  |  |  |  |  |  |
Accident Year 2016 [Member] | Automobile Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 20,549 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 7,421 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 3,374 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 6,796 |  |  |  |  |  |  |  |  |
Accident Year 2016 [Member] | Automobile Physical Damage [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 6,877 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 196 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 1,187 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 5,804 |  |  |  |  |  |  |  |  |
Accident Year 2016 [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 3,119 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 2,660 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 63 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 116 |  |  |  |  |  |  |  |  |
Accident Year 2016 [Member] | Surety [Member] |  |  |  |  |  |  |  |  |  |
Incurred Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Incurred claims and allocated claim adjustment expenses, net of reinsurance | 3,314 |  |  |  |  |  |  |  |  |
IBNR Reserves | $ 1,703 |  |  |  |  |  |  |  |  |
Cumulative number of reported claims | Claim | 41 |  |  |  |  |  |  |  |  |
Cumulative Paid Claims Development, Net of Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance. | $ 1,054 |  |  |  |  |  |  |  |  |

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