v3.26.1
Related Party Transactions (Promissory Note to Related Party) (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Related Party Transaction [Line Items]    
Unpaid Principal Balance $ 17,097,672 $ 16,000,731
Loans, at fair value(1)(2) [1],[2] 17,874,430 16,640,647
Corporate loan [Member]    
Related Party Transaction [Line Items]    
Unpaid Principal Balance 53,393 25,767
Loans, at fair value(1)(2) $ 52,575 $ 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 $ 607 $ 575
Loans, at fair value(1)(2) 607 575
Corporate loan [Member] | Equity Method Investee | Promissory Note to Equity Method Investee, the Residential Originator    
Related Party Transaction [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity 14,000  
Unpaid Principal Balance $ 9,800 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 $ 1,750
Investment Interest Rate 9.90% 9.00%
Unpaid Principal Balance $ 2,500 $ 1,750
Loans, at fair value(1)(2) $ 2,500 $ 1,750
Corporate loan [Member] | Equity Method Investee | Promissory Note to Equity Method Investee, Effective Date June 2025 | Rate charged up to original maximum borrowings    
Related Party Transaction [Line Items]    
Investment Interest Rate 9.00%  
Corporate loan [Member] | Equity Method Investee | Promissory Note to Equity Method Investee, Effective Date June 2025 | Rate charged on borrowings over original maximum borrowings    
Related Party Transaction [Line Items]    
Investment Interest Rate 12.00%  
Corporate loan [Member] | Equity Method Investee | Promissory Note to Equity Method Investee, Effective Date March 2021    
Related Party Transaction [Line Items]    
Investment Maturity Date Dec. 31, 2027  
Line of Credit Facility, Maximum Borrowing Capacity $ 3,000  
Investment Interest Rate 9.00% 9.00%
Unpaid Principal Balance $ 3,000 $ 0
Loans, at fair value(1)(2) 3,000 0
Consumer loans    
Related Party Transaction [Line Items]    
Unpaid Principal Balance 125 190
Loans, at fair value(1)(2) 108 159
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.