v3.26.1
Investments - Schedule of Available-for-Sale Allowance for Credit Losses Roll Forward (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance $ 38,819 $ 30,175 $ 31,287 $ 31,948
Current Provision for Securities without Prior Allowance 2,025 515 6,036 2,718
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration 0 0 0 0
Increase (Decrease) on Securities with Prior Allowance, excluding intent (or Requirement) to Sell Securities (770) (1,402) 3,373 (4,234)
Reductions for Securities Sold (972) (555) (1,594) (1,699)
Reductions for Securities Identified as Intent (or Requirement) to Sell during the Period 0 0 0 0
Ending Balance 39,102 28,733 39,102 28,733
Foreign government        
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance 12 19 16 21
Current Provision for Securities without Prior Allowance 68 0 68 0
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration 0 0 0 0
Increase (Decrease) on Securities with Prior Allowance, excluding intent (or Requirement) to Sell Securities (1) 2 (5) 0
Reductions for Securities Sold 0 0 0 0
Reductions for Securities Identified as Intent (or Requirement) to Sell during the Period 0 0 0 0
Ending Balance 79 21 79 21
Obligations of states and political subdivisions        
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance 305 419 259 570
Current Provision for Securities without Prior Allowance 0 27 61 32
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration 0 0 0 0
Increase (Decrease) on Securities with Prior Allowance, excluding intent (or Requirement) to Sell Securities 0 (36) (12) (106)
Reductions for Securities Sold 0 (20) (3) (106)
Reductions for Securities Identified as Intent (or Requirement) to Sell during the Period 0 0 0 0
Ending Balance 305 390 305 390
Corporate securities        
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance 13,065 12,616 7,691 14,924
Current Provision for Securities without Prior Allowance 1,767 306 5,371 935
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration 0 0 0 0
Increase (Decrease) on Securities with Prior Allowance, excluding intent (or Requirement) to Sell Securities (1,624) (2,979) 656 (5,142)
Reductions for Securities Sold (810) (372) (1,320) (1,146)
Reductions for Securities Identified as Intent (or Requirement) to Sell during the Period 0 0 0 0
Ending Balance 12,398 9,571 12,398 9,571
CLO and other ABS        
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance 14,029 5,499 11,902 4,889
Current Provision for Securities without Prior Allowance 190 182 499 1,652
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration 0 0 0 0
Increase (Decrease) on Securities with Prior Allowance, excluding intent (or Requirement) to Sell Securities 787 1,607 2,606 876
Reductions for Securities Sold (89) (58) (90) (187)
Reductions for Securities Identified as Intent (or Requirement) to Sell during the Period 0 0 0 0
Ending Balance 14,917 7,230 14,917 7,230
RMBS        
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance 11,393 11,342 11,284 11,544
Current Provision for Securities without Prior Allowance 0 0 37 0
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration 0 0 0 0
Increase (Decrease) on Securities with Prior Allowance, excluding intent (or Requirement) to Sell Securities 74 185 254 138
Reductions for Securities Sold (73) (105) (181) (260)
Reductions for Securities Identified as Intent (or Requirement) to Sell during the Period 0 0 0 0
Ending Balance 11,394 11,422 11,394 11,422
CMBS        
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]        
Beginning Balance 15 280 135 0
Current Provision for Securities without Prior Allowance 0 0 0 99
Initial Allowance for Purchased Credit Deteriorated Assets with Credit Deterioration 0 0 0 0
Increase (Decrease) on Securities with Prior Allowance, excluding intent (or Requirement) to Sell Securities (6) (181) (126) 0
Reductions for Securities Sold 0 0 0 0
Reductions for Securities Identified as Intent (or Requirement) to Sell during the Period 0 0 0 0
Ending Balance $ 9 $ 99 $ 9 $ 99