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Investments - Debt Securities Available-for-sale Allowance for Credit Loss (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Investments, Debt and Equity Securities [Abstract]    
Beginning balance $ 828 $ 197
Increase to allowance from securities for which credit losses were not previously recorded 24 21
Reduction from securities sold during the period (65)  
Reductions from intent to sell securities (180)  
Net increase (decrease) from securities that had an allowance at the beginning of the period (69) (61)
Ending balance $ 538 $ 157