v3.26.3
Investments - Debt and Short-term Investments (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Investments          
Other investments $ 57,608   $ 57,608   $ 59,281
Investment in unconsolidated investees 54,455   54,455   53,521
Cash 46,212   46,212   51,565
Short-term investments 254,273   254,273   120,562
Prime Holdings Insurance Services, Inc. (Prime)          
Investments          
Investment in unconsolidated investees 54,000   54,000    
Investment In Low Income Housing Tax Credit Partnerships (LIHTC)          
Investments          
Other investments 12,000   12,000   14,000
Amortization on tax credit partnership investments $ 1,000 $ 1,000 2,000 $ 2,000  
Amortization of tax credit partnerships, Statement of Income Income tax expense Income tax expense      
Total tax benefit on investments in tax credit partnership $ 1,000 $ 1,000 2,000 2,000  
Qualified affordable housing project investments, unfunded commitment 7,000   7,000    
Historic tax credit partnerships (HTC)          
Investments          
Other investments 9,000   9,000   11,000
Amortization on tax credit partnership investments $ 1,000 $ 1,000 2,000 3,000  
Amortization of tax credit partnerships, Statement of Income Income tax expense Income tax expense      
Total tax benefit on investments in tax credit partnership $ 1,000 $ 1,000 3,000 $ 3,000  
Equity investments in tax credit structures, unfunded commitment 4,000   4,000    
Investment in Private Funds          
Investments          
Other investments 17,000   17,000   $ 18,000
Fair value investments entities that calculate net asset value per share, unfunded commitments $ 2,000   $ 2,000