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Insurance Reserves and Policyholder Funds, Liability for Unpaid Losses, Claims and Loss Adjustment Expenses (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
USD ($)
Claim
Dec. 31, 2020
USD ($)
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 ($)
Dec. 31, 2012
USD ($)
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Liabilities for losses, claims and loss adjustment expenses, net of reinsurance $ 65,773                  
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 661,140                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance 645,871                  
Liabilities for losses, claims and loss adjustment expenses, net of reinsurance 15,269                  
Automobile Liability [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 223,695                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance 183,908                  
Liabilities for losses, claims and loss adjustment expenses, net of reinsurance 39,787                  
Automobile Physical Damage [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 45,580                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance 43,144                  
All outstanding liabilities prior period net of reinsurance 12                  
Liabilities for losses, claims and loss adjustment expenses, net of reinsurance 2,448                  
General Liability [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 8,768                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance 6,007                  
All outstanding liabilities prior period net of reinsurance 519                  
Liabilities for losses, claims and loss adjustment expenses, net of reinsurance 3,280                  
Surety [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 22,123                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance 18,817                  
All outstanding liabilities prior period net of reinsurance 85                  
Liabilities for losses, claims and loss adjustment expenses, net of reinsurance 3,391                  
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 50,984 $ 50,984 $ 50,984 $ 50,985 $ 50,987 $ 50,989 $ 50,998 $ 51,021 $ 50,996 $ 50,021
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 867,053                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 50,984 50,984 50,984 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 13,366 13,373 13,373 13,357 13,343 13,313 13,707 14,108 15,007 12,980
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 2,349                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 13,365 13,373 13,373 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 1,349 1,388 1,377 1,344 1,333 1,214 1,270 1,269 1,305 4,055
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 162                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 1,349 1,280 1,269 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 4,993 4,944 4,925 4,892 4,880 4,869 5,345 5,396 4,767 4,979
IBNR Reserves $ 1                  
Cumulative number of reported claims | Claim 90                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 4,985 4,934 4,916 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 57,014 57,014 57,015 57,016 57,021 57,023 57,034 56,970 56,974  
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 957,374                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 57,015 57,014 57,015 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 20,970 20,972 20,972 21,020 21,352 21,823 21,096 20,702 18,664  
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 3,270                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 20,970 20,972 20,972 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 868 904 945 820 865 817 926 728 3,461  
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 198                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 867 855 805 803 791 811 579 339 104  
Accident Year 2013 [Member] | Surety [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 2,753 2,757 2,765 2,809 2,866 2,947 2,743 2,007 3,060  
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 60                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 2,753 2,757 2,765 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 56,976 56,977 56,976 56,981 56,981 56,938 57,179    
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 939,488                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 56,976 56,976 56,977 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 22,125 22,100 22,080 21,682 22,353 22,041 21,881 20,812    
IBNR Reserves $ 56                  
Cumulative number of reported claims | Claim 3,545                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 21,786 21,813 21,735 20,878 20,177 17,554 13,807 6,822    
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 519 523 497 406 476 557 501 3,744    
IBNR Reserves $ 4                  
Cumulative number of reported claims | Claim 199                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 502 498 493 373 369 331 299 171    
Accident Year 2014 [Member] | Surety [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 2,782 2,818 2,617 2,685 2,760 2,990 3,130 3,214    
IBNR Reserves $ 37                  
Cumulative number of reported claims | Claim 54                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 2,562 2,562 2,593 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 54,985 54,985 54,984 54,990 54,993 54,939 55,482      
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 898,393                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 54,985 54,985 54,984 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 20,849 20,680 20,086 20,007 20,017 19,857 18,521      
IBNR Reserves $ 21                  
Cumulative number of reported claims | Claim 3,530                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 20,726 20,234 19,557 17,612 14,938 11,878 6,226      
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 855 855 867 1,044 1,227 1,037 4,421      
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 146                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 855 855 863 664 464 259 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 1,307 1,310 1,406 1,359 1,400 1,630 1,902      
IBNR Reserves $ 5                  
Cumulative number of reported claims | Claim 50                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 1,273 1,271 1,128 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 63,221 63,221 63,225 63,226 59,851 58,849        
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 1,036,917                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 63,221 63,221 63,225 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 22,310 22,245 22,388 21,846 21,275 20,549        
IBNR Reserves $ 84                  
Cumulative number of reported claims | Claim 3,852                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 21,809 21,408 19,613 16,397 13,141 6,796        
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 619 621 608 736 1,148 3,119        
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 93                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 619 617 608 568 203 116        
Accident Year 2016 [Member] | Surety [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 1,678 1,865 1,876 1,865 1,812 3,314        
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 47                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 1,677 1,862 1,873 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 69,633 69,635 69,643 69,655 67,960          
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 1,512,362                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 69,633 69,635 69,643 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 26,009 25,180 23,766 24,212 22,179          
IBNR Reserves $ 164                  
Cumulative number of reported claims | Claim 3,793                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 25,023 22,778 20,221 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 5,860 5,860 5,857 5,933 6,257          
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 1,324                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 5,860 5,860 5,856 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 738 738 513 488 1,490          
IBNR Reserves $ 10                  
Cumulative number of reported claims | Claim 83                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 696 556 365 136 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 3,514 3,629 3,799 3,671 4,677          
IBNR Reserves $ 12                  
Cumulative number of reported claims | Claim 63                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 3,442 3,545 3,523 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 80,357 80,361 80,404 79,140            
IBNR Reserves $ 2                  
Cumulative number of reported claims | Claim 2,051,656                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 80,355 80,361 80,222 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 30,013 27,338 25,682 24,284            
IBNR Reserves $ 1,784                  
Cumulative number of reported claims | Claim 3,629                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 24,662 21,121 15,647 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 7,430 7,447 7,530 7,805            
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 1,455                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 7,433 7,446 7,510 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 128 198 333 1,656            
IBNR Reserves $ 0                  
Cumulative number of reported claims | Claim 75                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 128 115 90 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 956 1,381 1,938 3,528            
IBNR Reserves $ 3                  
Cumulative number of reported claims | Claim 63                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 941 1,361 1,454 $ 1,157            
Accident Year 2019 [Member] | Medicare Supplement [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 86,988 87,028 88,765              
IBNR Reserves $ 10                  
Cumulative number of reported claims | Claim 2,244,326                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 86,978 86,856 72,333              
Accident Year 2019 [Member] | Automobile Liability [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 25,724 24,045 25,241              
IBNR Reserves $ 2,113                  
Cumulative number of reported claims | Claim 3,573                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 19,384 14,694 7,305              
Accident Year 2019 [Member] | Automobile Physical Damage [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 7,914 8,026 8,526              
IBNR Reserves $ 1                  
Cumulative number of reported claims | Claim 1,486                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 7,906 8,005 6,360              
Accident Year 2019 [Member] | General Liability [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 455 707 1,916              
IBNR Reserves $ 101                  
Cumulative number of reported claims | Claim 85                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 242 209 41              
Accident Year 2019 [Member] | Surety [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 630 657 2,130              
IBNR Reserves $ 17                  
Cumulative number of reported claims | Claim 30                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 568 395 259              
Accident Year 2020 [Member] | Medicare Supplement [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 75,715   $ 75,857              
IBNR Reserves $ 188                  
Cumulative number of reported claims | Claim 1,848,987                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 75,527 63,129                
Accident Year 2020 [Member] | Automobile Liability [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 16,442 22,416                
IBNR Reserves $ 2,167                  
Cumulative number of reported claims | Claim 2,438                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 9,941 5,172                
Accident Year 2020 [Member] | Automobile Physical Damage [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 10,080 10,288                
IBNR Reserves $ 16                  
Cumulative number of reported claims | Claim 1,629                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 9,952 8,347                
Accident Year 2020 [Member] | General Liability [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 670 2,223                
IBNR Reserves $ 150                  
Cumulative number of reported claims | Claim 87                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 385 208                
Accident Year 2020 [Member] | Surety [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 574 2,263                
IBNR Reserves $ 56                  
Cumulative number of reported claims | Claim 23                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 460 $ 97                
Accident Year 2021 [Member] | Medicare Supplement [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 65,267                  
IBNR Reserves $ 15,070                  
Cumulative number of reported claims | Claim 1,560,365                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 50,197                  
Accident Year 2021 [Member] | Automobile Liability [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 25,887                  
IBNR Reserves $ 13,147                  
Cumulative number of reported claims | Claim 2,422                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 6,242                  
Accident Year 2021 [Member] | Automobile Physical Damage [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 14,296                  
IBNR Reserves $ 227                  
Cumulative number of reported claims | Claim 1,748                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 11,993                  
Accident Year 2021 [Member] | General Liability [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 2,567                  
IBNR Reserves $ 1,746                  
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 $ 364                  
Accident Year 2021 [Member] | Surety [Member]                    
Incurred Claims Development, Net of Reinsurance [Abstract]                    
Incurred losses, claims and allocated loss adjustment expenses, net of reinsurance 2,936                  
IBNR Reserves $ 1,948                  
Cumulative number of reported claims | Claim 27                  
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]                    
Cumulative paid losses, claims and allocated loss adjustment expense, net of reinsurance $ 156