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Fair Value Option, Disclosures, Credit-linked Notes (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Fair Value, Option, Quantitative Disclosures [Line Items]    
Changes in Fair Value - Gains (Losses) $ 94 $ 482
Changes in Fair Value - Other Comprehensive Income $ (111) $ 146