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Other Assets - Collateral Pledged Against Derivative Contracts (Details) - Swaps - Asset Pledged as Collateral without Right - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Derivative [Line Items]    
Restricted Cash $ 11,645 $ 22,880
Agency MBS    
Derivative [Line Items]    
Agency MBS, at fair value $ 49,657 $ 41,179