v3.26.1
Financial Derivatives (Schedule of Credit Derivatives) (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Credit Derivatives [Line Items]    
Financial derivatives–assets, at fair value $ 152,834 $ 142,723
Derivative Liability (47,374) (53,073)
Derivative Assets (Liabilities), at Fair Value, Net 105,460 89,650
Credit default swaps on asset-backed indices    
Credit Derivatives [Line Items]    
Financial derivatives–assets, at fair value 2,207 2,206
Credit default swaps on asset-backed indices | Financial Derivatives - Assets | Long    
Credit Derivatives [Line Items]    
Notional value 182 190
Financial derivatives–assets, at fair value $ 15 $ 9
Credit default swaps on asset-backed indices | Financial Derivatives - Assets | Long | Weighted Average    
Credit Derivatives [Line Items]    
Remaining Years to Maturity 11 years 9 months 11 years 11 months 26 days
Credit default swaps on asset-backed indices | Financial Derivatives - Assets | Short    
Credit Derivatives [Line Items]    
Notional value $ 25,592 $ 26,693
Financial derivatives–assets, at fair value $ 2,192 $ 2,197
Credit default swaps on asset-backed indices | Financial Derivatives - Assets | Short | Weighted Average    
Credit Derivatives [Line Items]    
Remaining Years to Maturity 32 years 10 months 9 days 33 years 18 days
Credit default swaps on corporate bond indices    
Credit Derivatives [Line Items]    
Financial derivatives–assets, at fair value $ 1,348 $ 4,621
Derivative Liability (5,285) (25,407)
Credit default swaps on corporate bond indices | Financial Derivatives - Assets | Long    
Credit Derivatives [Line Items]    
Notional value 57,750 165,010
Financial derivatives–assets, at fair value $ 1,348 $ 4,621
Credit default swaps on corporate bond indices | Financial Derivatives - Assets | Long | Weighted Average    
Credit Derivatives [Line Items]    
Remaining Years to Maturity 1 year 25 days 3 years 8 months 8 days
Credit default swaps on corporate bond indices | Financial Derivatives - Liabilities | Short    
Credit Derivatives [Line Items]    
Notional value $ 231,000 $ 1,034,704
Remaining Years to Maturity 4 years 1 month 24 days 4 years 9 months 3 days
Derivative Liability $ (5,285) $ (25,407)
Credit default swaps on corporate bonds    
Credit Derivatives [Line Items]    
Derivative Liability (134) (155)
Credit default swaps on corporate bonds | Financial Derivatives - Liabilities | Short    
Credit Derivatives [Line Items]    
Notional value 13,000 13,000
Derivative Liability $ (134) $ (155)
Credit default swaps on corporate bonds | Financial Derivatives - Liabilities | Short | Weighted Average    
Credit Derivatives [Line Items]    
Remaining Years to Maturity 1 year 2 months 19 days 1 year 5 months 19 days
Credit default swaps    
Credit Derivatives [Line Items]    
Notional value $ 211,706 $ 909,243
Derivative Assets (Liabilities), at Fair Value, Net $ (1,866) $ (18,737)
Credit default swaps | Weighted Average    
Credit Derivatives [Line Items]    
Remaining Years to Maturity 5 years 8 months 26 days 5 years 8 months 26 days
Credit Default Swap, Asset Backed Securities    
Credit Derivatives [Line Items]    
Derivative Liability $ (2) $ (2)
Credit Default Swap, Asset Backed Securities | Financial Derivatives - Liabilities | Short    
Credit Derivatives [Line Items]    
Notional value 46 46
Derivative Liability $ (2) $ (2)
Credit Default Swap, Asset Backed Securities | Financial Derivatives - Liabilities | Short | Weighted Average    
Credit Derivatives [Line Items]    
Remaining Years to Maturity 9 years 5 months 26 days 9 years 8 months 26 days
Credit Default Swap, Selling Protection [Member]    
Credit Derivatives [Line Items]    
Fair Value $ 1,363 $ 4,630
Notional value $ 57,932 $ 165,200