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Historical Loss and LAE Development - Incurred Losses and Loss Adjustment Expenses, Net of Reinsurance (Details)
$ in Thousands
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 ($)
Dec. 31, 2012
USD ($)
Claims Development                    
Liabilities for losses and loss adjustment expenses, net of reinsurance $ 1,435,469 $ 1,306,320                
Casualty Segment | Primary Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 942,920                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 500,538                  
All outstanding liabilities before 2012, net of reinsurance 10,760                  
Liabilities for losses and loss adjustment expenses, net of reinsurance 453,142 432,823                
Casualty Segment | Excess Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 566,925                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 200,841                  
All outstanding liabilities before 2012, net of reinsurance 18,495                  
Liabilities for losses and loss adjustment expenses, net of reinsurance 384,579 312,827                
Casualty Segment | Claims Made                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 485,084                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 278,954                  
All outstanding liabilities before 2012, net of reinsurance 3,575                  
Liabilities for losses and loss adjustment expenses, net of reinsurance 209,705 214,103                
Casualty Segment | Transportation                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 417,878                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 286,875                  
All outstanding liabilities before 2012, net of reinsurance 528                  
Liabilities for losses and loss adjustment expenses, net of reinsurance 131,531 129,852                
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2012 | Primary Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 60,155 60,591 $ 60,465 $ 60,328 $ 59,488 $ 59,028 $ 61,072 $ 65,893 $ 78,406 $ 91,807
Total IBNR $ 1,589                  
Cumulative number of reported claims | Claim 5,192                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 56,660 55,679 54,391 51,611 47,970 43,276 33,822 23,889 14,539 5,897
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2012 | Excess Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 26,848 26,129 25,286 23,020 22,433 21,231 21,885 21,021 21,558 29,042
Total IBNR $ 783                  
Cumulative number of reported claims | Claim 867                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 22,246 22,202 21,993 19,310 17,747 16,879 15,380 8,843 3,573 1,315
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2012 | Claims Made                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 22,236 22,325 20,785 17,569 17,612 18,022 19,590 20,727 26,144 27,576
Total IBNR $ 207                  
Cumulative number of reported claims | Claim 804                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 17,148 16,892 16,450 15,621 14,378 10,968 9,218 6,898 4,086 433
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2012 | Transportation                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 23,955 23,845 23,731 23,305 23,620 23,689 23,511 22,924 22,203 21,452
Total IBNR $ 74                  
Cumulative number of reported claims | Claim 2,287                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 23,181 23,181 23,180 22,730 22,566 20,931 17,318 12,394 8,533 4,466
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2013 | Primary Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 57,519 57,106 59,116 59,556 60,162 60,329 62,882 67,297 80,823  
Total IBNR $ 2,096                  
Cumulative number of reported claims | Claim 4,324                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 50,597 49,411 47,783 45,753 40,609 34,786 22,366 13,021 6,334  
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2013 | Excess Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 24,836 25,073 25,496 24,922 25,599 25,425 26,857 34,824 39,984  
Total IBNR $ 1,396                  
Cumulative number of reported claims | Claim 949                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 22,154 21,229 18,524 17,956 16,967 14,545 10,967 5,701 1,060  
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2013 | Claims Made                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 37,950 37,974 38,352 37,959 38,473 40,288 44,054 41,488 40,095  
Total IBNR $ 767                  
Cumulative number of reported claims | Claim 1,042                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 36,078 35,476 34,535 32,789 29,678 26,121 18,425 7,073 792  
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2013 | Transportation                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 39,586 39,183 39,309 39,974 38,811 37,673 32,989 32,853 32,742  
Total IBNR $ 118                  
Cumulative number of reported claims | Claim 2,853                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 38,172 37,915 37,327 35,923 33,480 28,220 19,761 11,978 5,306  
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2014 | Primary Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 63,727 65,636 66,702 66,389 67,237 71,592 79,497 88,092    
Total IBNR $ 3,034                  
Cumulative number of reported claims | Claim 4,295                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 56,784 55,965 52,387 47,343 40,270 29,545 18,771 11,436    
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2014 | Excess Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 35,683 35,128 33,458 33,372 32,274 35,119 39,095 50,889    
Total IBNR $ 2,622                  
Cumulative number of reported claims | Claim 923                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 28,963 26,068 23,376 22,541 18,852 11,002 4,006 1,899    
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2014 | Claims Made                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 52,619 53,783 53,841 51,554 55,350 58,152 55,386 53,929    
Total IBNR $ 1,504                  
Cumulative number of reported claims | Claim 1,305                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 50,714 46,122 44,127 40,080 35,755 27,923 9,775 1,705    
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2014 | Transportation                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 41,974 41,156 40,508 40,202 38,590 36,452 33,015 38,361    
Total IBNR $ 297                  
Cumulative number of reported claims | Claim 3,099                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 40,427 40,006 38,282 33,190 27,457 19,676 13,933 7,125    
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2015 | Primary Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 75,438 75,470 76,398 78,675 83,579 84,975 94,835      
Total IBNR $ 6,644                  
Cumulative number of reported claims | Claim 4,406                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 62,997 58,866 54,270 45,056 33,020 19,902 10,157      
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2015 | Excess Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 41,690 42,446 43,328 42,840 47,392 50,857 53,672      
Total IBNR $ 5,439                  
Cumulative number of reported claims | Claim 699                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 32,752 31,352 28,756 23,184 19,571 10,127 2,048      
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2015 | Claims Made                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 38,609 39,619 39,653 39,906 42,206 47,831 55,006      
Total IBNR $ 2,759                  
Cumulative number of reported claims | Claim 1,338                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 33,529 32,241 28,795 20,920 16,774 10,738 2,215      
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2015 | Transportation                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 45,807 45,525 45,162 46,395 47,021 46,258 38,561      
Total IBNR $ 708                  
Cumulative number of reported claims | Claim 3,186                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 42,626 41,345 39,339 37,222 29,554 20,709 6,984      
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2016 | Primary Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 79,440 83,374 85,449 90,611 96,753 101,950        
Total IBNR $ 10,352                  
Cumulative number of reported claims | Claim 4,315                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 60,349 56,152 48,042 35,764 24,186 10,142        
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2016 | Excess Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 29,671 30,251 33,125 37,676 49,385 56,341        
Total IBNR $ 11,023                  
Cumulative number of reported claims | Claim 646                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 14,400 12,703 10,054 7,441 3,396 1,068        
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2016 | Claims Made                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 65,078 64,730 67,728 69,493 67,760 59,992        
Total IBNR $ 4,808                  
Cumulative number of reported claims | Claim 1,507                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 52,846 47,999 39,370 27,465 14,558 2,060        
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2016 | Transportation                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 53,915 52,818 52,277 54,105 53,519 50,430        
Total IBNR $ 1,235                  
Cumulative number of reported claims | Claim 3,943                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 47,488 43,564 38,001 30,354 18,354 8,923        
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2017 | Primary Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 90,759 95,513 102,583 111,391 119,741          
Total IBNR $ 15,999                  
Cumulative number of reported claims | Claim 4,491                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 62,236 52,823 38,783 25,933 13,154          
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2017 | Excess Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 43,249 44,737 48,363 55,868 62,863          
Total IBNR $ 16,698                  
Cumulative number of reported claims | Claim 631                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 18,470 15,441 9,275 5,679 17          
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2017 | Claims Made                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 59,907 57,450 62,714 62,450 60,572          
Total IBNR $ 9,039                  
Cumulative number of reported claims | Claim 1,648                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 42,918 36,522 22,728 11,350 2,455          
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2017 | Transportation                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 45,351 43,764 45,017 53,641 55,640          
Total IBNR $ 2,257                  
Cumulative number of reported claims | Claim 3,639                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 36,141 30,260 24,090 17,070 7,979          
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2018 | Primary Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 115,076 125,731 130,281 141,513            
Total IBNR $ 32,268                  
Cumulative number of reported claims | Claim 4,822                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 63,980 48,424 32,365 15,066            
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2018 | Excess Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 51,023 54,626 62,646 69,362            
Total IBNR $ 26,824                  
Cumulative number of reported claims | Claim 590                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 17,294 10,801 5,823 2,506            
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2018 | Claims Made                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 48,457 56,468 62,416 66,128            
Total IBNR $ 17,399                  
Cumulative number of reported claims | Claim 1,391                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 24,918 18,840 11,965 1,964            
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2018 | Transportation                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 36,468 38,719 54,592 57,597            
Total IBNR $ 4,946                  
Cumulative number of reported claims | Claim 3,402                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 24,503 19,216 12,827 6,980            
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2019 | Primary Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 120,570 135,209 146,011              
Total IBNR $ 62,738                  
Cumulative number of reported claims | Claim 5,175                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 41,911 30,673 15,698              
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2019 | Excess Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 79,083 89,691 88,078              
Total IBNR $ 47,276                  
Cumulative number of reported claims | Claim 603                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 25,389 19,044 4,213              
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2019 | Claims Made                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 52,224 61,712 62,918              
Total IBNR $ 26,387                  
Cumulative number of reported claims | Claim 1,508                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 14,117 8,123 1,839              
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2019 | Transportation                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 43,976 56,129 58,297              
Total IBNR $ 9,024                  
Cumulative number of reported claims | Claim 3,313                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 21,120 15,852 7,148              
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2020 | Primary Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 137,439 145,171                
Total IBNR $ 88,880                  
Cumulative number of reported claims | Claim 4,394                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 30,596 17,096                
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2020 | Excess Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 98,409 107,579                
Total IBNR $ 74,182                  
Cumulative number of reported claims | Claim 471                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 13,856 2,901                
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2020 | Claims Made                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 56,785 60,278                
Total IBNR $ 43,408                  
Cumulative number of reported claims | Claim 1,287                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 5,687 1,488                
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2020 | Transportation                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 35,524 43,573                
Total IBNR $ 16,243                  
Cumulative number of reported claims | Claim 1,637                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 7,876 3,986                
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2021 | Primary Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 142,797                  
Total IBNR $ 112,702                  
Cumulative number of reported claims | Claim 3,678                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 14,428                  
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2021 | Excess Occurrence                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 136,433                  
Total IBNR $ 93,982                  
Cumulative number of reported claims | Claim 371                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 5,317                  
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2021 | Claims Made                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 51,219                  
Total IBNR $ 42,451                  
Cumulative number of reported claims | Claim 1,112                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 999                  
Casualty Segment | Short-duration Insurance Contracts, Accident Year 2021 | Transportation                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 51,322                  
Total IBNR $ 9,745                  
Cumulative number of reported claims | Claim 2,161                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 5,341                  
Property segment                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 766,882                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 642,870                  
All outstanding liabilities before 2012, net of reinsurance 640                  
Liabilities for losses and loss adjustment expenses, net of reinsurance 124,652 103,383                
Property segment | Short-duration Insurance Contracts, Accident Year 2012                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 77,883 77,924 78,002 78,161 78,125 79,175 77,569 79,181 80,155 85,485
Total IBNR $ 7                  
Cumulative number of reported claims | Claim 2,640                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 77,360 77,347 77,323 77,159 76,152 75,640 73,705 72,057 66,509 39,074
Property segment | Short-duration Insurance Contracts, Accident Year 2013                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 61,400 61,623 61,776 61,834 61,914 62,114 62,173 62,090 63,864  
Total IBNR $ 36                  
Cumulative number of reported claims | Claim 2,996                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 61,188 61,335 61,325 61,195 60,520 59,259 57,407 50,840 32,208  
Property segment | Short-duration Insurance Contracts, Accident Year 2014                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 49,520 49,479 49,444 49,217 48,761 48,801 49,441 56,587    
Total IBNR $ 52                  
Cumulative number of reported claims | Claim 4,562                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 49,317 49,259 49,027 47,799 46,528 46,148 43,380 30,550    
Property segment | Short-duration Insurance Contracts, Accident Year 2015                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 52,878 52,781 53,111 52,720 53,958 56,103 59,863      
Total IBNR $ 96                  
Cumulative number of reported claims | Claim 4,075                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 52,400 52,342 52,078 51,290 50,197 49,348 32,184      
Property segment | Short-duration Insurance Contracts, Accident Year 2016                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 55,383 55,424 55,930 55,384 55,594 62,900        
Total IBNR $ 177                  
Cumulative number of reported claims | Claim 3,377                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 54,747 54,328 53,006 51,371 46,921 33,134        
Property segment | Short-duration Insurance Contracts, Accident Year 2017                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 82,319 82,671 84,961 83,273 90,803          
Total IBNR $ 1,321                  
Cumulative number of reported claims | Claim 2,893                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 80,581 78,360 74,415 66,818 41,314          
Property segment | Short-duration Insurance Contracts, Accident Year 2018                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 80,470 79,961 83,457 89,091            
Total IBNR $ 3,642                  
Cumulative number of reported claims | Claim 2,337                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 75,253 72,357 68,264 37,048            
Property segment | Short-duration Insurance Contracts, Accident Year 2019                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 61,116 65,189 71,232              
Total IBNR $ 3,193                  
Cumulative number of reported claims | Claim 2,446                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 55,092 51,740 30,703              
Property segment | Short-duration Insurance Contracts, Accident Year 2020                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 110,466 118,247                
Total IBNR $ 17,071                  
Cumulative number of reported claims | Claim 2,837                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 79,660 43,192                
Property segment | Short-duration Insurance Contracts, Accident Year 2021                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 135,447                  
Total IBNR $ 45,890                  
Cumulative number of reported claims | Claim 2,616                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 57,272                  
Surety Segment                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 84,041                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance 49,729                  
All outstanding liabilities before 2012, net of reinsurance (68)                  
Liabilities for losses and loss adjustment expenses, net of reinsurance 34,244 27,009                
Surety Segment | Short-duration Insurance Contracts, Accident Year 2012                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 7,131 6,985 7,082 7,099 7,471 7,867 8,180 8,667 11,452 17,114
Total IBNR $ 2                  
Cumulative number of reported claims | Claim 1,480                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 7,083 6,941 6,996 7,065 7,406 7,536 7,416 6,726 6,680 $ 1,883
Surety Segment | Short-duration Insurance Contracts, Accident Year 2013                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 5,046 5,107 5,209 5,231 5,271 5,399 6,170 7,516 16,080  
Total IBNR $ 10                  
Cumulative number of reported claims | Claim 1,409                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 5,029 5,061 5,128 5,150 5,098 4,911 4,701 2,856 $ 1,116  
Surety Segment | Short-duration Insurance Contracts, Accident Year 2014                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 4,227 4,266 4,319 4,267 4,427 5,225 8,106 16,450    
Total IBNR $ 8                  
Cumulative number of reported claims | Claim 1,355                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 4,197 4,214 4,234 4,131 4,059 4,166 4,283 $ 722    
Surety Segment | Short-duration Insurance Contracts, Accident Year 2015                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 9,275 9,521 9,792 10,456 11,113 12,957 16,958      
Total IBNR $ 59                  
Cumulative number of reported claims | Claim 1,242                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 9,168 9,186 9,183 9,436 7,695 6,719 $ 3,192      
Surety Segment | Short-duration Insurance Contracts, Accident Year 2016                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 7,948 8,391 8,895 9,351 11,062 18,928        
Total IBNR $ 125                  
Cumulative number of reported claims | Claim 1,381                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 7,673 8,086 7,640 6,299 5,817 $ 3,087        
Surety Segment | Short-duration Insurance Contracts, Accident Year 2017                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 8,034 8,116 8,798 8,641 16,127          
Total IBNR $ 306                  
Cumulative number of reported claims | Claim 1,790                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 7,362 7,221 7,062 2,862 $ 979          
Surety Segment | Short-duration Insurance Contracts, Accident Year 2018                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 3,947 4,564 7,227 16,765            
Total IBNR $ 713                  
Cumulative number of reported claims | Claim 1,323                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 2,536 2,368 2,588 $ 1,835            
Surety Segment | Short-duration Insurance Contracts, Accident Year 2019                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 5,053 7,205 14,785              
Total IBNR $ 2,047                  
Cumulative number of reported claims | Claim 1,112                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 2,765 2,433 $ 336              
Surety Segment | Short-duration Insurance Contracts, Accident Year 2020                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 14,840 19,241                
Total IBNR $ 7,212                  
Cumulative number of reported claims | Claim 748                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 2,719 $ 835                
Surety Segment | Short-duration Insurance Contracts, Accident Year 2021                    
Claims Development                    
Incurred losses and loss adjustment expenses, net of reinsurance 18,540                  
Total IBNR $ 15,647                  
Cumulative number of reported claims | Claim 444                  
Cumulative paid claims and allocated claim adjustment expenses, net of reinsurance $ 1,197