v3.26.1
Related Party Transactions (Promissory Note to Related Party) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Related Party Transaction [Line Items]      
Unpaid Principal Balance $ 16,647,345   $ 16,000,731
Loans, at fair value(1)(2) [1],[2] 17,393,161   16,640,647
Realized gains (losses) on securities and loans, net 14,715 $ (8,804)  
Earnings (losses) from investments in unconsolidated entities 17,564 $ 8,304  
Corporate loan [Member]      
Related Party Transaction [Line Items]      
Unpaid Principal Balance 32,138   25,767
Loans, at fair value(1)(2) $ 31,479   $ 25,366
Corporate loan [Member] | Equity Method Investee | Promissory Note to Equity Method Investee, Effective Date February 2022      
Related Party Transaction [Line Items]      
Investment Maturity Date Dec. 31, 2026    
Line of Credit Facility, Maximum Borrowing Capacity $ 750    
Investment Interest Rate 7.00%   7.00%
Unpaid Principal Balance $ 658   $ 575
Loans, at fair value(1)(2) 658   575
Corporate loan [Member] | Equity Method Investee | Promissory Note to Equity Method Investee, the Residential Originator      
Related Party Transaction [Line Items]      
Unpaid Principal Balance 14,000   $ 14,000
Corporate loan [Member] | Equity Method Investee | Promissory Note to Equity Method Investee, the Residential Originator | Maximum      
Related Party Transaction [Line Items]      
Line of Credit Facility, Maximum Borrowing Capacity $ 14,000    
Corporate loan [Member] | Equity Method Investee | Promissory Note to Equity Method Investee, Effective Date June 2025      
Related Party Transaction [Line Items]      
Investment Maturity Date Jun. 09, 2028    
Line of Credit Facility, Maximum Borrowing Capacity $ 2,500    
Investment Interest Rate 9.90%   9.00%
Unpaid Principal Balance $ 2,500   $ 1,750
Loans, at fair value(1)(2) 2,500   1,750
Consumer loans      
Related Party Transaction [Line Items]      
Unpaid Principal Balance 154   190
Loans, at fair value(1)(2) 135   159
Consumer loans | Equity Method Investee | Promissory Note to Equity Method Investee, the Consumer Originator      
Related Party Transaction [Line Items]      
Line of Credit Facility, Maximum Borrowing Capacity $ 1,000    
Investment Interest Rate 4.00%    
Unpaid Principal Balance $ 800   $ 200
[1] Ellington Financial Inc.'s Consolidated Balance Sheets include assets and liabilities of variable interest entities it has consolidated. See Note 12 for additional details on Ellington Financial Inc.'s consolidated variable interest entities.
[2] Includes assets pledged as collateral to counterparties. See Note 14 for additional details on the Company's borrowings and related collateral.