v3.26.1
Fair Value Measurements (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value $ 136,731 $ 305,372
Fair Value, Recurring | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 136,731 305,372
Fair Value, Recurring | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 0 0
Fair Value, Recurring | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents, fair value 0 $ 0
U.S. Treasury Securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fixed-maturity securities, available-for-sale, at fair value [1] 197,072  
U.S. Treasury Securities | Fair Value, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fixed-maturity securities, available-for-sale, at fair value 197,072  
U.S. Treasury Securities | Fair Value, Recurring | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fixed-maturity securities, available-for-sale, at fair value 197,072  
U.S. Treasury Securities | Fair Value, Recurring | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fixed-maturity securities, available-for-sale, at fair value 0  
U.S. Treasury Securities | Fair Value, Recurring | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fixed-maturity securities, available-for-sale, at fair value $ 0  
[1] There was no allowance for credit losses for the periods presented. Estimated fair value is determined using quoted prices in active markets for identical assets (Level 1 inputs). Refer to Note 4. Fair Value Measurements for additional details.