v3.26.1
Investment in Loans (Schedule of Residential Mortgage Loans) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Unpaid Principal Balance     $ 17,097,672   $ 16,000,731
Unamortized Premium (Discount)     (264,552)   (245,735)
Fair Value [1],[2]     $ 17,874,430   $ 16,640,647
Weighted Average          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Weighted Average Coupon     5.11%   5.21%
Weighted Average Yield     8.60%   8.27%
Weighted average life     5 years   5 years 3 months 10 days
Residential mortgage loans          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Unpaid Principal Balance     $ 3,674,683   $ 3,739,813
Unamortized Premium (Discount)     46,989   47,839
Amortized Cost     3,721,672   3,787,652
Gains     11,494   16,476
Losses     (173,897)   (161,034)
Fair Value     3,559,269   3,643,094
Residential mortgage loans | Non-performing          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Unpaid Principal Balance     231,606   266,485
Fair Value     209,759   246,586
Residential mortgage loans | Consolidated Entities [Member] | Securitized loans [Member] | Securitized residential mortgage loans          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Fair Value         $ 1,547,000
Residential mortgage loans | Consolidated Entities [Member] | Securitized loans [Member] | Securitized residential loans          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Fair Value     $ 1,544,000    
Residential mortgage loans | Weighted Average          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Weighted Average Coupon     7.15%   7.18%
Weighted Average Yield 5.68%   6.83%    
Weighted average life 4 years 6 months   4 years 11 months 1 day    
Consumer loans          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Unpaid Principal Balance     $ 125   $ 190
Unamortized Premium (Discount)     149   148
Amortized Cost     274   338
Gains     21   36
Losses     (187)   (215)
Fair Value     108   $ 159
Realized Losses, Write offs on loans   $ 23 $ (21) $ (23)  
Consumer loans | Weighted Average          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Weighted average life     10 months 20 days   10 months 20 days
Consolidated securitization trusts [Member] | Residential mortgage loans          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Losses     $ 144,700   $ 136,100
Non-QM loan securitization | Residential mortgage loans | Consolidated Entities [Member] | Securitized loans [Member]          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Fair Value     $ 1,270,842   $ 1,354,189
[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.