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Investments - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Reported Value Measurement [Member]        
Investment [Table]        
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents $ 68,440 $ 47,275    
Other Investments 24,971 28,294    
Securities fair value 34,016 22,861    
Fair Value of Securities Deposited in Connection wtih Letter of Credit 153      
Debt Securities, Available-for-sale, Allowance for Credit Loss 0 0    
Equity Securities Excluded From Fair Value 17,517 20,618    
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 70,090 47,275 $ 19,223 $ 19,940
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 68,440 47,275    
Other than Temporary Impairment Losses, Investments (3,100) (6,517) $ 0  
Insurance Distribution        
Investment [Table]        
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 2,656 $ 2,845    
Commitments [Member] | Private Equity Funds        
Investment [Table]        
Other Investments $ 1,501