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Fair Value Measurements Level 3 Private Label Residential CMOs (Details) - Level 3 - Fair Value, Recurring - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value $ 40,249 $ 0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) (11,501)  
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) $ (11,501)