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Reserve for Loss and Loss Expense - Schedule of Exposure to Various Asbestos and Environmental Claims (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Liability for Claims and Claims Adjustment Expense [Line Items]        
Gross $ 34,649 $ 26,409 $ 27,768 $ 27,773
Net 27,440 $ 19,143 $ 20,329 $ 21,075
Asbestos        
Liability for Claims and Claims Adjustment Expense [Line Items]        
Gross 13,300      
Net 12,000      
Landfill sites        
Liability for Claims and Claims Adjustment Expense [Line Items]        
Gross 11,200      
Net 7,400      
Underground storage tanks        
Liability for Claims and Claims Adjustment Expense [Line Items]        
Gross 10,100      
Net $ 8,000