v3.26.3
Investments - Schedule of Investments, Available-for-Sale Securities (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost $ 639,905 $ 687,813
Gross Unrealized Gains 148 9,124
Gross Unrealized Losses (19,230) (666)
Estimated Fair Value 620,823 696,271
Corporate    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 258,398 262,302
Gross Unrealized Gains 88 3,982
Gross Unrealized Losses (6,915) (116)
Estimated Fair Value 251,571 266,168
U.S. Treasury    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 103,326 181,077
Gross Unrealized Gains 0 701
Gross Unrealized Losses (3,240) (161)
Estimated Fair Value 100,086 181,617
States and municipalities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 31,341 29,182
Gross Unrealized Gains 0 967
Gross Unrealized Losses (1,205) (3)
Estimated Fair Value 30,136 30,146
Foreign    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 34,623 33,000
Gross Unrealized Gains 7 54
Gross Unrealized Losses (414) (62)
Estimated Fair Value 34,216 32,992
Asset-backed securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 74,573 31,899
Gross Unrealized Gains 53 394
Gross Unrealized Losses (772) (42)
Estimated Fair Value 73,854 32,251
Mortgage-backed securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 137,644 150,353
Gross Unrealized Gains 0 3,026
Gross Unrealized Losses (6,684) (282)
Estimated Fair Value $ 130,960 $ 153,097