v3.26.1
Unpaid Losses and Loss Adjustment Expenses - Loss Development (Details)
$ in Thousands
Dec. 31, 2025
USD ($)
Claim
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Claims Development [Line Items]                    
Incurred $ 593,135                  
Total IBNR $ 34,390                  
Cumulative number of reported claims | Claim 51,643                  
Cumulative Paid $ 514,272                  
Net Unpaid losses and ALAE, years 2016 through 2025 78,863                  
Unpaid losses and ALAE, prior to 2016 889                  
Unpaid Losses, LPT (3,432)                  
Unpaid losses and ALAE, net of reinsurance 76,320                  
Commercial Lines                    
Claims Development [Line Items]                    
Incurred 479,680                  
Total IBNR 29,060                  
Cumulative Paid 407,875                  
Net Unpaid losses and ALAE, years 2016 through 2025 71,805                  
Unpaid losses and ALAE, prior to 2016 889                  
Unpaid Losses, LPT (3,432)                  
Unpaid losses and ALAE, net of reinsurance 69,262                  
Personal Lines                    
Claims Development [Line Items]                    
Incurred 113,455                  
Total IBNR 5,330                  
Cumulative Paid 106,397                  
Net Unpaid losses and ALAE, years 2016 through 2025 7,058                  
Unpaid losses and ALAE, prior to 2016 0                  
Unpaid losses and ALAE, net of reinsurance 7,058                  
Accident Year 2016                    
Claims Development [Line Items]                    
Incurred 65,407 $ 65,030 $ 64,843 $ 64,356 $ 62,627 $ 61,744 $ 59,905 $ 55,389 $ 48,353 $ 44,015
Total IBNR $ 1                  
Cumulative number of reported claims | Claim 2,157                  
Cumulative Paid $ 65,034 64,558 64,238 62,636 59,096 57,296 53,077 42,227 30,373 17,374
Accident Year 2016 | Commercial Lines                    
Claims Development [Line Items]                    
Incurred 49,726 49,349 49,162 48,677 46,993 46,089 44,355 40,440 34,935 32,396
Total IBNR $ 1                  
Cumulative number of reported claims | Claim 1                  
Cumulative Paid $ 49,353 48,877 48,557 46,957 43,644 41,945 37,967 27,785 19,135 10,255
Accident Year 2016 | Personal Lines                    
Claims Development [Line Items]                    
Incurred 15,681 15,681 15,681 15,679 15,634 15,655 15,550 14,949 13,418 11,619
Total IBNR $ 0                  
Cumulative number of reported claims | Claim 2,156                  
Cumulative Paid $ 15,681 15,681 15,681 15,679 15,452 15,351 15,110 14,442 11,238 $ 7,119
Accident Year 2017                    
Claims Development [Line Items]                    
Incurred 74,682 74,328 74,104 71,606 70,500 66,676 64,242 58,045 58,309  
Total IBNR $ 2                  
Cumulative number of reported claims | Claim 1,818                  
Cumulative Paid $ 73,596 73,485 72,259 67,757 62,014 56,834 48,209 35,964 20,768  
Accident Year 2017 | Commercial Lines                    
Claims Development [Line Items]                    
Incurred 59,720 59,366 59,149 56,649 55,589 51,883 49,749 44,495 44,251  
Total IBNR $ 2                  
Cumulative number of reported claims | Claim 2                  
Cumulative Paid $ 58,634 58,523 57,304 52,800 47,148 42,308 34,205 23,020 12,448  
Accident Year 2017 | Personal Lines                    
Claims Development [Line Items]                    
Incurred 14,962 14,962 14,955 14,957 14,911 14,793 14,493 13,550 14,058  
Total IBNR $ 0                  
Cumulative number of reported claims | Claim 1,816                  
Cumulative Paid $ 14,962 14,962 14,955 14,957 14,866 14,526 14,004 12,944 $ 8,320  
Accident Year 2018                    
Claims Development [Line Items]                    
Incurred 72,746 70,682 68,217 66,400 61,643 56,024 48,810 48,517    
Total IBNR $ 3                  
Cumulative number of reported claims | Claim 2,916                  
Cumulative Paid $ 70,864 67,698 63,447 56,752 47,819 37,733 25,417 14,671    
Accident Year 2018 | Commercial Lines                    
Claims Development [Line Items]                    
Incurred 66,413 64,349 61,881 60,102 55,261 49,741 42,432 42,624    
Total IBNR $ 3                  
Cumulative number of reported claims | Claim 2                  
Cumulative Paid $ 64,531 61,365 57,114 50,508 41,577 31,633 19,799 10,375    
Accident Year 2018 | Personal Lines                    
Claims Development [Line Items]                    
Incurred 6,333 6,333 6,336 6,298 6,382 6,283 6,378 5,893    
Total IBNR $ 0                  
Cumulative number of reported claims | Claim 2,914                  
Cumulative Paid $ 6,333 6,333 6,333 6,244 6,242 6,100 5,618 $ 4,296    
Accident Year 2019                    
Claims Development [Line Items]                    
Incurred 62,896 63,323 61,895 58,125 49,227 44,841 44,385      
Total IBNR $ (108)                  
Cumulative number of reported claims | Claim 898                  
Cumulative Paid $ 61,314 57,976 53,228 42,743 31,650 23,066 12,197      
Accident Year 2019 | Commercial Lines                    
Claims Development [Line Items]                    
Incurred 60,037 60,464 59,028 55,263 46,329 42,129 41,286      
Total IBNR $ 108                  
Cumulative number of reported claims | Claim 95                  
Cumulative Paid $ 58,455 55,117 50,369 39,893 28,958 20,462 10,078      
Accident Year 2019 | Personal Lines                    
Claims Development [Line Items]                    
Incurred 2,859 2,859 2,867 2,862 2,898 2,712 3,099      
Total IBNR $ 0                  
Cumulative number of reported claims | Claim 803                  
Cumulative Paid $ 2,859 2,859 2,859 2,850 2,692 2,604 $ 2,119      
Accident Year 2020                    
Claims Development [Line Items]                    
Incurred 49,116 50,348 46,537 41,829 37,918 36,206        
Total IBNR $ 1,274                  
Cumulative number of reported claims | Claim 415                  
Cumulative Paid $ 45,661 42,125 35,973 26,830 19,787 11,524        
Accident Year 2020 | Commercial Lines                    
Claims Development [Line Items]                    
Incurred 46,499 47,731 43,918 39,193 35,328 33,867        
Total IBNR $ 1,274                  
Cumulative number of reported claims | Claim 74                  
Cumulative Paid $ 43,044 39,508 33,354 24,225 17,332 10,217        
Accident Year 2020 | Personal Lines                    
Claims Development [Line Items]                    
Incurred 2,617 2,617 2,619 2,636 2,590 2,339        
Total IBNR $ 0                  
Cumulative number of reported claims | Claim 341                  
Cumulative Paid $ 2,617 2,617 2,619 2,605 2,455 $ 1,307        
Accident Year 2021                    
Claims Development [Line Items]                    
Incurred 67,483 62,894 52,890 46,598 44,797          
Total IBNR $ 3,509                  
Cumulative number of reported claims | Claim 527                  
Cumulative Paid $ 55,816 46,909 34,559 25,293 15,892          
Accident Year 2021 | Commercial Lines                    
Claims Development [Line Items]                    
Incurred 63,268 58,682 48,650 42,266 40,388          
Total IBNR $ 3,509                  
Cumulative number of reported claims | Claim 203                  
Cumulative Paid $ 51,618 42,714 30,478 21,313 12,870          
Accident Year 2021 | Personal Lines                    
Claims Development [Line Items]                    
Incurred 4,215 4,212 4,240 4,332 4,409          
Total IBNR $ 0                  
Cumulative number of reported claims | Claim 324                  
Cumulative Paid $ 4,198 4,195 4,081 3,980 $ 3,022          
Accident Year 2022                    
Claims Development [Line Items]                    
Incurred 72,418 69,756 57,873 51,112            
Total IBNR $ 6,839                  
Cumulative number of reported claims | Claim 3,954                  
Cumulative Paid $ 55,164 42,539 30,815 18,236            
Accident Year 2022 | Commercial Lines                    
Claims Development [Line Items]                    
Incurred 64,216 61,647 49,751 41,708            
Total IBNR $ 6,817                  
Cumulative number of reported claims | Claim 3,904                  
Cumulative Paid $ 46,980 34,451 22,892 12,839            
Accident Year 2022 | Personal Lines                    
Claims Development [Line Items]                    
Incurred 8,202 8,109 8,122 9,404            
Total IBNR $ 22                  
Cumulative number of reported claims | Claim 50                  
Cumulative Paid $ 8,184 8,088 7,923 $ 5,397            
Accident Year 2023                    
Claims Development [Line Items]                    
Incurred 66,904 65,638 58,900              
Total IBNR $ 12,409                  
Cumulative number of reported claims | Claim 4,294                  
Cumulative Paid $ 43,501 33,629 24,656              
Accident Year 2023 | Commercial Lines                    
Claims Development [Line Items]                    
Incurred 47,081 45,921 39,456              
Total IBNR $ 11,725                  
Cumulative number of reported claims | Claim 4,294                  
Cumulative Paid $ 23,835 14,869 8,486              
Accident Year 2023 | Personal Lines                    
Claims Development [Line Items]                    
Incurred 19,823 19,717 19,444              
Total IBNR $ 684                  
Cumulative number of reported claims | Claim 0                  
Cumulative Paid $ 19,666 18,760 $ 16,170              
Accident Year 2024                    
Claims Development [Line Items]                    
Incurred 39,628 35,987                
Total IBNR $ 4,713                  
Cumulative number of reported claims | Claim 10,667                  
Cumulative Paid $ 29,854 22,297                
Accident Year 2024 | Commercial Lines                    
Claims Development [Line Items]                    
Incurred 18,583 16,949                
Total IBNR $ 4,029                  
Cumulative number of reported claims | Claim 9,891                  
Cumulative Paid $ 10,093 6,776                
Accident Year 2024 | Personal Lines                    
Claims Development [Line Items]                    
Incurred 21,045 19,038                
Total IBNR $ 684                  
Cumulative number of reported claims | Claim 776                  
Cumulative Paid $ 19,761 $ 15,521                
Accident Year 2025                    
Claims Development [Line Items]                    
Incurred 21,855                  
Total IBNR $ 5,748                  
Cumulative number of reported claims | Claim 23,997                  
Cumulative Paid $ 13,468                  
Accident Year 2025 | Commercial Lines                    
Claims Development [Line Items]                    
Incurred 4,137                  
Total IBNR $ 1,808                  
Cumulative number of reported claims | Claim 20,829                  
Cumulative Paid $ 1,332                  
Accident Year 2025 | Personal Lines                    
Claims Development [Line Items]                    
Incurred 17,718                  
Total IBNR $ 3,940                  
Cumulative number of reported claims | Claim 3,168                  
Cumulative Paid $ 12,136