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Unpaid Losses and Loss Adjustment Expenses (Schedule of Non Standard Auto incurred and paid claims development) (Details)
$ in Thousands
Dec. 31, 2021
USD ($)
Claims
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
 [1]
Dec. 31, 2014
USD ($)
 [1]
Dec. 31, 2013
USD ($)
 [1]
Dec. 31, 2012
USD ($)
 [1]
Liabilities for Unpaid Losses and Loss Adjustment Expenses, net of reinsurance $ 139,662 $ 105,750 $ 93,250 $ 87,121            
Private Passenger Auto [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 390,146                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 364,775                  
All outstanding liabilities prior to 2011, net of reinsurance 18                  
Liabilities for Unpaid Losses and Loss Adjustment Expenses, net of reinsurance 25,389                  
Private Passenger Auto [Member] | Accident Year 2012 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 22,570 22,523 23,651 23,621 $ 23,298 $ 24,133 $ 24,098 $ 24,323 $ 24,787 $ 26,962
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 22,555 22,490 23,324 23,271 23,073 22,726 22,640 21,888 21,434 18,681
Total IBNR Plus Expected Development on Reported Claims | Claims 5                  
Cumulative Number of Reported Claims | Claims 9,727                  
Private Passenger Auto [Member] | Accident Year 2013 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 26,096 26,077 26,105 26,138 26,014 27,334 27,363 27,840 29,079  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 26,073 26,019 26,035 25,843 25,718 24,918 24,765 23,576 20,077  
Total IBNR Plus Expected Development on Reported Claims | Claims 11                  
Cumulative Number of Reported Claims | Claims 10,826                  
Private Passenger Auto [Member] | Accident Year 2014 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 29,423 29,479 29,298 29,144 29,099 30,427 31,349 32,548    
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 29,407 29,239 28,765 28,281 27,443 27,076 25,727 22,744    
Total IBNR Plus Expected Development on Reported Claims | Claims 16                  
Cumulative Number of Reported Claims | Claims 11,745                  
Private Passenger Auto [Member] | Accident Year 2015 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 30,379 30,455 30,679 30,503 30,461 31,532 32,438      
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 30,355 30,120 29,795 29,598 28,933 27,171 23,401      
Total IBNR Plus Expected Development on Reported Claims | Claims 24                  
Cumulative Number of Reported Claims | Claims 11,688                  
Private Passenger Auto [Member] | Accident Year 2016 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 38,416 38,535 39,314 39,057 39,260 40,227        
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 38,173 37,833 38,108 37,307 35,845 29,009        
Total IBNR Plus Expected Development on Reported Claims | Claims 93                  
Cumulative Number of Reported Claims | Claims 14,325                  
Private Passenger Auto [Member] | Accident Year 2017 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 40,488 40,427 40,120 40,199 40,779          
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 40,111 39,738 38,331 37,050 31,033          
Total IBNR Plus Expected Development on Reported Claims | Claims 159                  
Cumulative Number of Reported Claims | Claims 13,753                  
Private Passenger Auto [Member] | Accident Year 2018 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 43,575 43,641 43,428 44,925            
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 42,820 41,479 40,213 34,358            
Total IBNR Plus Expected Development on Reported Claims | Claims 353                  
Cumulative Number of Reported Claims | Claims 14,675                  
Private Passenger Auto [Member] | Accident Year 2019 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 53,364 53,328 53,769              
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 50,370 48,414 42,414              
Total IBNR Plus Expected Development on Reported Claims | Claims 881                  
Cumulative Number of Reported Claims | Claims 16,540                  
Private Passenger Auto [Member] | Accident Year 2020 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 48,519 46,247                
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 42,585 35,495                
Total IBNR Plus Expected Development on Reported Claims | Claims 1,546                  
Cumulative Number of Reported Claims | Claims 13,541                  
Private Passenger Auto [Member] | Accident Year 2021 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 57,316                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 42,326                  
Total IBNR Plus Expected Development on Reported Claims | Claims 3,819                  
Cumulative Number of Reported Claims | Claims 14,064                  
Non-standard auto (Primero) [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 96,815                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 90,094                  
All outstanding liabilities prior to 2011, net of reinsurance                  
Liabilities for Unpaid Losses and Loss Adjustment Expenses, net of reinsurance 6,721                  
Non-standard auto (Primero) [Member] | Accident Year 2012 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 8,324 8,323 8,324 8,324 8,312 8,302 8,361 8,369 8,491 8,749
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 8,324 8,323 8,324 8,324 8,312 8,302 8,276 7,983 7,522 4,377
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 2,048                  
Non-standard auto (Primero) [Member] | Accident Year 2013 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 10,844 10,844 10,828 10,833 10,843 10,804 10,800 10,823 11,063  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 10,844 10,844 10,818 10,815 10,805 10,717 10,508 9,675 6,320  
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 2,617                  
Non-standard auto (Primero) [Member] | Accident Year 2014 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 7,606 7,606 7,625 7,612 7,577 7,591 7,619 7,297    
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 7,606 7,606 7,605 7,579 7,521 7,423 6,707 3,733    
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 1,838                  
Non-standard auto (Primero) [Member] | Accident Year 2015 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 9,623 9,622 9,641 9,691 9,655 9,806 9,727      
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 9,623 9,622 9,620 9,557 9,479 8,685 5,335      
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 1,793                  
Non-standard auto (Primero) [Member] | Accident Year 2016 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 9,976 10,008 10,033 10,054 10,048 9,967        
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 9,976 9,974 9,912 9,790 8,882 5,409        
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 1,740                  
Non-standard auto (Primero) [Member] | Accident Year 2017 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 8,543 8,541 8,556 8,654 8,722          
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 8,506 8,460 8,204 7,660 4,348          
Total IBNR Plus Expected Development on Reported Claims | Claims 9                  
Cumulative Number of Reported Claims | Claims 1,460                  
Non-standard auto (Primero) [Member] | Accident Year 2018 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 11,766 11,763 11,804 10,445            
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 11,730 11,616 10,536 5,492            
Total IBNR Plus Expected Development on Reported Claims | Claims 12                  
Cumulative Number of Reported Claims | Claims 1,794                  
Non-standard auto (Primero) [Member] | Accident Year 2019 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 11,236 11,391 12,264              
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 10,971 10,007 6,309              
Total IBNR Plus Expected Development on Reported Claims | Claims 58                  
Cumulative Number of Reported Claims | Claims 1,502                  
Non-Standard Auto (Primero) [Member] | Accident Year 2020 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 8,824 9,018                
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 7,645 4,111                
Total IBNR Plus Expected Development on Reported Claims | Claims 129                  
Cumulative Number of Reported Claims | Claims 950                  
Non-Standard Auto (Primero) [Member] | Accident Year 2021 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 10,073                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 4,869                  
Total IBNR Plus Expected Development on Reported Claims | Claims 1,006                  
Cumulative Number of Reported Claims | Claims 933                  
Home and Farm [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 383,472                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 367,778                  
All outstanding liabilities prior to 2011, net of reinsurance                  
Liabilities for Unpaid Losses and Loss Adjustment Expenses, net of reinsurance 15,694                  
Home and Farm [Member] | Accident Year 2012 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 24,325 24,324 24,086 24,088 24,079 24,081 24,091 24,320 24,439 25,179
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 24,325 24,324 24,086 24,087 24,076 24,075 24,168 24,029 23,863 21,761
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 3,631                  
Home and Farm [Member] | Accident Year 2013 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 27,595 27,588 27,593 28,315 28,286 28,315 28,531 29,217 29,976  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 27,590 27,583 27,560 27,495 27,456 27,221 27,183 26,934 23,354  
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 4,189                  
Home and Farm [Member] | Accident Year 2014 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 35,503 35,497 35,534 35,684 35,589 35,770 36,001 36,663    
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance   35,485 35,482 35,481 35,371 35,219 35,199 32,207    
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 5,243                  
Home and Farm [Member] | Accident Year 2015 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 31,600 31,612 31,446 31,577 31,297 31,818 32,789      
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 31,597 31,597 31,383 30,573 30,350 30,164 27,204      
Total IBNR Plus Expected Development on Reported Claims | Claims 3                  
Cumulative Number of Reported Claims | Claims 3,923                  
Home and Farm [Member] | Accident Year 2016 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 44,745 44,728 44,602 44,945 44,510 45,825        
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 44,650 44,583 44,530 44,270 44,942 37,656        
Total IBNR Plus Expected Development on Reported Claims | Claims 45                  
Cumulative Number of Reported Claims | Claims 6,348                  
Home and Farm [Member] | Accident Year 2017 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 41,804 41,779 41,886 41,593 42,110          
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 41,414 40,941 40,442 38,928 34,657          
Total IBNR Plus Expected Development on Reported Claims | Claims 109                  
Cumulative Number of Reported Claims | Claims 4,943                  
Home and Farm [Member] | Accident Year 2018 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 43,682 43,747 43,846 42,515            
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 43,549 43,178 42,814 37,881            
Total IBNR Plus Expected Development on Reported Claims | Claims 107                  
Cumulative Number of Reported Claims | Claims 4,580                  
Home and Farm [Member] | Accident Year 2019 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 45,471 45,828 45,438              
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 44,119 43,253 38,709              
Total IBNR Plus Expected Development on Reported Claims | Claims 375                  
Cumulative Number of Reported Claims | Claims 5,483                  
Home and Farm [Member] | Accident Year 2020 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 35,668 36,264                
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 33,988 29,274                
Total IBNR Plus Expected Development on Reported Claims | Claims 674                  
Cumulative Number of Reported Claims | Claims 4,070                  
Home and Farm [Member] | Accident Year 2021 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 53,079                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 41,043                  
Total IBNR Plus Expected Development on Reported Claims | Claims 4,413                  
Cumulative Number of Reported Claims | Claims 4,837                  
Crop [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 247,880                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 248,831                  
All outstanding liabilities prior to 2011, net of reinsurance                  
Liabilities for Unpaid Losses and Loss Adjustment Expenses, net of reinsurance (951)                  
Crop [Member] | Accident Year 2012 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 13,673 13,673 13,673 13,673 13,673 13,673 13,673 13,673 13,676 13,546
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 13,673 13,673 13,673 13,673 13,673 13,673 13,673 13,673 13,673 13,078
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 2,137                  
Crop [Member] | Accident Year 2013 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 39,665 39,665 39,665 39,665 39,665 39,665 39,665 39,665 40,976  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 39,665 39,665 39,665 39,665 39,665 39,665 39,665 39,665 35,511  
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 2,097                  
Crop [Member] | Accident Year 2014 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 20,333 20,333 20,333 20,333 20,333 20,333 20,333 22,686    
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 20,333 20,333 20,333 20,333 20,333 20,333 20,333 17,788    
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 2,268                  
Crop [Member] | Accident Year 2015 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 13,849 13,849 13,849 13,849 13,849 13,849 13,813      
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 13,849 13,849 13,849 13,849 13,849 13,849 12,866      
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 2,427                  
Crop [Member] | Accident Year 2016 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 19,487 19,487 19,487 19,487 19,582 20,209        
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 19,487 19,487 19,487 19,487 19,487 16,444        
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 2,806                  
Crop [Member] | Accident Year 2017 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 34,181 34,181 34,181 34,181 33,733          
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 34,181 34,181 34,181 34,181 32,767          
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 2,968                  
Crop [Member] | Accident Year 2018 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 11,730 11,730 11,730 12,506            
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 11,730 11,730 11,730 10,764            
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 2,147                  
Crop [Member] | Accident Year 2019 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 37,629 37,629 33,913              
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 37,629 37,629 26,332              
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 3,101                  
Crop [Member] | Accident Year 2020 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 28,759 28,688                
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 28,759 28,038                
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 2,442                  
Crop [Member] | Accident Year 2021 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 28,574                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 29,525                  
Total IBNR Plus Expected Development on Reported Claims | Claims 314                  
Cumulative Number of Reported Claims | Claims 2,620                  
Non-Standard Auto (Direct Auto) [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 151,786                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 115,012                  
All outstanding liabilities prior to 2011, net of reinsurance 20                  
Liabilities for Unpaid Losses and Loss Adjustment Expenses, net of reinsurance 36,794                  
Non-Standard Auto (Direct Auto) [Member] | Accident Year 2012 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 4,998 5,009 4,930 4,909 4,643 [1] 4,215 [1] 3,916 3,927 4,159 7,164
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 4,946 4,915 4,730 4,671 4,503 [1] 4,081 [1] 3,587 3,041 2,421 1,696
Total IBNR Plus Expected Development on Reported Claims | Claims 12                  
Cumulative Number of Reported Claims | Claims 3,357                  
Non-Standard Auto (Direct Auto) [Member] | Accident Year 2013 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 5,106 5,131 5,049 5,160 5,278 [1] 5,261 [1] 5,869 6,020 10,596  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 5,000 4,960 4,890 4,808 4,602 [1] 4,291 [1] 3,796 3,123 1,944  
Total IBNR Plus Expected Development on Reported Claims | Claims 22                  
Cumulative Number of Reported Claims | Claims 3,373                  
Non-Standard Auto (Direct Auto) [Member] | Accident Year 2014 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 6,524 6,672 6,476 6,745 8,381 [1] 6,224 [1] 9,068 14,010    
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 6,364 6,327 6,151 5,781 5,369 [1] 4,452 [1] 3,573 2,201    
Total IBNR Plus Expected Development on Reported Claims | Claims 34                  
Cumulative Number of Reported Claims | Claims 4,776                  
Non-Standard Auto (Direct Auto) [Member] | Accident Year 2015 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 10,576 10,945 10,704 10,538 13,043 [1] 14,498 [1] 17,917      
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 10,176 10,057 9,560 8,327 7,057 [1] 5,202 [1] 2,967      
Total IBNR Plus Expected Development on Reported Claims | Claims 92                  
Cumulative Number of Reported Claims | Claims 9,057                  
Non-Standard Auto (Direct Auto) [Member] | Accident Year 2016 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 12,291 12,876 13,956 13,552 14,660 [1] 20,547 [1]        
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 11,519 11,058 10,603 8,559 6,272 [1] 3,526 [1]        
Total IBNR Plus Expected Development on Reported Claims | Claims (638)                  
Cumulative Number of Reported Claims | Claims 11,137                  
Non-Standard Auto (Direct Auto) [Member] | Accident Year 2017 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 13,678 14,648 15,858 18,621 23,376 [1]          
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 12,098 11,366 10,034 6,981 4,385 [1]          
Total IBNR Plus Expected Development on Reported Claims | Claims 28                  
Cumulative Number of Reported Claims | Claims 11,720                  
Non-Standard Auto (Direct Auto) [Member] | Accident Year 2018 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 20,541 21,980 22,662 25,791            
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 16,759 15,204 12,285 6,034            
Total IBNR Plus Expected Development on Reported Claims | Claims (282)                  
Cumulative Number of Reported Claims | Claims 14,917                  
Non-Standard Auto (Direct Auto) [Member] | Accident Year 2019 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 24,574 25,473 24,932              
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 18,982 16,214 10,203              
Total IBNR Plus Expected Development on Reported Claims | Claims 395                  
Cumulative Number of Reported Claims | Claims 10,918                  
Non-Standard Auto (Direct Auto) [Member] | Accident Year 2020 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 22,919 24,036                
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 15,401 9,964                
Total IBNR Plus Expected Development on Reported Claims | Claims (2,387)                  
Cumulative Number of Reported Claims | Claims 13,623                  
Non-Standard Auto (Direct Auto) [Member] | Accident Year 2021 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 30,579                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 13,767                  
Total IBNR Plus Expected Development on Reported Claims | Claims (4,381)                  
Cumulative Number of Reported Claims | Claims 14,784                  
Non-Standard Auto (Westminster) [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 100,019                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 77,079                  
All outstanding liabilities prior to 2011, net of reinsurance                  
Liabilities for Unpaid Losses and Loss Adjustment Expenses, net of reinsurance 22,940                  
Non-Standard Auto (Westminster) [Member] | Accident Year 2012 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 2,680 2,680 2,680 [1] 2,680 [1] 2,680 [1] 2,666 [1] 2,583 2,539 2,492 2,795
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 2,680 2,680 2,680 [1] 2,680 [1] 2,680 [1] 2,591 [1] 2,537 2,442 2,364 1,634
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 133                  
Non-Standard Auto (Westminster) [Member] | Accident Year 2013 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 2,036 2,036 2,037 [1] 2,053 [1] 2,058 [1] 1,935 [1] 2,000 1,982 2,214  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 2,036 2,036 2,036 [1] 2,035 [1] 1,949 [1] 1,889 [1] 1,829 1,727 1,494  
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 138                  
Non-Standard Auto (Westminster) [Member] | Accident Year 2014 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 4,443 4,445 4,443 [1] 4,450 [1] 4,428 [1] 4,286 [1] 4,274 4,385    
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 4,443 4,410 4,403 [1] 4,395 [1] 4,269 [1] 4,151 [1] 3,921 3,330    
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 272                  
Non-Standard Auto (Westminster) [Member] | Accident Year 2015 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 4,294 4,238 4,293 [1] 4,218 [1] 4,019 [1] 3,258 [1] 3,082      
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 4,287 4,231 4,206 [1] 3,950 [1] 3,332 [1] 2,794 [1] 2,126      
Total IBNR Plus Expected Development on Reported Claims | Claims 7                  
Cumulative Number of Reported Claims | Claims 278                  
Non-Standard Auto (Westminster) [Member] | Accident Year 2016 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 6,354 6,248 6,091 [1] 6,200 [1] 5,719 [1] 4,661 [1]        
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 6,338 6,112 5,693 [1] 5,630 [1] 5,289 [1] 3,172 [1]        
Total IBNR Plus Expected Development on Reported Claims | Claims 16                  
Cumulative Number of Reported Claims | Claims 264                  
Non-Standard Auto (Westminster) [Member] | Accident Year 2017 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 7,905 7,347 6,838 [1] 6,249 [1] 5,552 [1]          
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 7,206 6,576 5,865 [1] 4,927 [1] 3,573 [1]          
Total IBNR Plus Expected Development on Reported Claims | Claims 249                  
Cumulative Number of Reported Claims | Claims 320                  
Non-Standard Auto (Westminster) [Member] | Accident Year 2018 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 12,769 12,414 11,177 [1] 10,358 [1]            
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 11,911 10,591 9,472 [1] 6,494 [1]            
Total IBNR Plus Expected Development on Reported Claims | Claims 378                  
Cumulative Number of Reported Claims | Claims 479                  
Non-Standard Auto (Westminster) [Member] | Accident Year 2019 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 14,564 13,051 11,658 [1]              
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 11,056 9,925 6,294 [1]              
Total IBNR Plus Expected Development on Reported Claims | Claims 1,659                  
Cumulative Number of Reported Claims | Claims 415                  
Non-Standard Auto (Westminster) [Member] | Accident Year 2020 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 14,063 14,774                
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 10,853 8,146                
Total IBNR Plus Expected Development on Reported Claims | Claims 1,944                  
Cumulative Number of Reported Claims | Claims 465                  
Non-Standard Auto (Westminster) [Member] | Accident Year 2021 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 30,911                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 16,269                  
Total IBNR Plus Expected Development on Reported Claims | Claims 5,437                  
Cumulative Number of Reported Claims | Claims 520                  
Non-Standard Auto (non-Westminster) [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 20,828                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 19,566                  
All outstanding liabilities prior to 2011, net of reinsurance                  
Liabilities for Unpaid Losses and Loss Adjustment Expenses, net of reinsurance 1,262                  
Non-Standard Auto (non-Westminster) [Member] | Accident Year 2012 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance 969 970 969 969 970 985 988 1,001 1,125 1,600
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 969 970 969 969 970 969 969 985 932 $ 776
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 142                  
Non-Standard Auto (non-Westminster) [Member] | Accident Year 2013 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 2,511 2,511 2,511 2,511 2,508 2,548 2,566 2,637 2,690  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 2,511 2,511 2,511 2,511 2,508 2,504 2,530 2,751 $ 2,520  
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 227                  
Non-Standard Auto (non-Westminster) [Member] | Accident Year 2014 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 1,650 1,650 1,650 1,650 1,675 1,694 1,732 2,180    
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 1,650 1,650 1,650 1,650 1,640 1,563 1,925 $ 1,782    
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 163                  
Non-Standard Auto (non-Westminster) [Member] | Accident Year 2015 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 1,580 1,580 1,580 1,582 1,637 1,643 1,695      
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 1,580 1,580 1,580 1,580 1,818 1,796 $ 1,274      
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 135                  
Non-Standard Auto (non-Westminster) [Member] | Accident Year 2016 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 2,512 2,512 2,516 2,515 2,526 2,683        
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 2,512 2,512 2,512 2,498 2,806 $ 1,822        
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 288                  
Non-Standard Auto (non-Westminster) [Member] | Accident Year 2017 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 2,494 2,497 2,510 2,513 2,530          
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 2,494 2,497 2,497 2,465 $ 1,530          
Total IBNR Plus Expected Development on Reported Claims | Claims                  
Cumulative Number of Reported Claims | Claims 167                  
Non-Standard Auto (non-Westminster) [Member] | Accident Year 2018 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 1,555 1,609 1,576 1,652            
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 1,554 1,240 1,213 $ 1,049            
Total IBNR Plus Expected Development on Reported Claims | Claims 1                  
Cumulative Number of Reported Claims | Claims 147                  
Non-Standard Auto (non-Westminster) [Member] | Accident Year 2019 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 2,777 2,782 2,607              
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 2,717 2,712 $ 1,917              
Total IBNR Plus Expected Development on Reported Claims | Claims 15                  
Cumulative Number of Reported Claims | Claims 189                  
Non-Standard Auto (non-Westminster) [Member] | Accident Year 2020 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 2,054 2,293                
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 1,892 $ 1,543                
Total IBNR Plus Expected Development on Reported Claims | Claims 29                  
Cumulative Number of Reported Claims | Claims 129                  
Non-Standard Auto (non-Westminster) [Member] | Accident Year 2021 [Member]                    
Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 2,726                  
Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance $ 1,687                  
Total IBNR Plus Expected Development on Reported Claims | Claims 220                  
Cumulative Number of Reported Claims | Claims 177                  
[1] Prior years unaudited