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Fair Value Measurements - Summary of Carrying Value and Estimated Fair Value of Company's Financial Instruments Not Carried at Fait Value (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Carrying
Value    
Fair Value Assets Measured On Recurring Basis [Line Items]    
Surplus note $ 618 $ 1,029
Estimated Fair Value    
Fair Value Assets Measured On Recurring Basis [Line Items]    
Surplus note $ 499 $ 885