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Organization and Investment Objective (Details) - $ / shares
Dec. 31, 2020
Dec. 31, 2019
Feb. 28, 2019
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Common shares $ 0.001 $ 0.001 $ 0.001  
Ellington Financial Operating Partnership LLC [Member] | Total Stockholders' Equity        
Organization, Consolidation and Presentation of Financial Statements [Line Items]        
Ownership Percentage 98.70%     97.60%