v3.26.1
Borrowings (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2026
USD ($)
counterparty
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
counterparty
Dec. 31, 2024
USD ($)
Borrowings [Line Items]        
Total secured borrowings $ 17,100,000   $ 16,300,000  
Number of Counterparties with Outstanding Reverse Repurchase Agreements | counterparty 22   21  
Securities Collateral relating to Reverse Repurchase Agreements $ 3,500,000   $ 3,300,000  
Repurchase Agreements amount at risk threshold 10.00%      
Other secured borrowings(1) [1] $ 264,444   296,398  
Other secured borrowings, at fair value(1) [1] $ 3,125,332   $ 2,945,578  
Debt Instrument, Interest Rate, Effective Rate 6.54%   6.70%  
HMBS-related obligations, at fair value $ 10,765,668   $ 10,406,332  
Cash and Cash Equivalents, at Carrying Value 163,224 [1] $ 203,288 [1] 201,893 [1] $ 192,387
Investment related receivables(1) [1] 239,406   177,208  
Non-QM loan securitization        
Borrowings [Line Items]        
Other secured borrowings, at fair value(1) $ 1,200,000   $ 1,240,000  
Debt Instrument, Interest Rate, Effective Rate 3.11%   3.10%  
Secured borrowing facility collateralized by HECM tail draws        
Borrowings [Line Items]        
Other secured borrowings(1) $ 18,500   $ 20,700  
Debt Instrument, Interest Rate, Effective Rate 7.25%   7.25%  
Fair Value of Assets Transfered and Accounted for as Secured Borrowings $ 34,600   $ 35,200  
GNMA HMBS        
Borrowings [Line Items]        
Debt Instrument, Interest Rate, Effective Rate 5.42%   5.52%  
HMBS-related obligations, at fair value $ 10,800,000   $ 10,400,000  
MLPS Counterparty        
Borrowings [Line Items]        
Other secured borrowings(1) $ 31,500   $ 40,500  
Debt Instrument, Interest Rate, Effective Rate 6.32%   6.39%  
Fair Value of Assets Transfered and Accounted for as Secured Borrowings $ 34,100   $ 43,500  
Reverse Loan Securitization        
Borrowings [Line Items]        
Other secured borrowings, at fair value(1) $ 1,620,000   $ 1,400,000  
Debt Instrument, Interest Rate, Effective Rate 4.82%   4.84%  
European Residential Loan Securitization        
Borrowings [Line Items]        
Other secured borrowings, at fair value(1) $ 25,800   $ 27,600  
Debt Instrument, Interest Rate, Effective Rate 7.23%   7.42%  
Secured Revolving Borrowing Facility Collateralized by ABS Backed by Consumer Loans        
Borrowings [Line Items]        
Other secured borrowings(1) $ 32,800   $ 29,200  
Debt Instrument, Interest Rate, Effective Rate 6.82%   7.19%  
Fair Value of Assets Transfered and Accounted for as Secured Borrowings $ 53,300   $ 52,700  
Secured Borrowing Facility Collateralized by Proprietary Reverse Loans        
Borrowings [Line Items]        
Other secured borrowings(1) $ 131,600   $ 128,100  
Debt Instrument, Interest Rate, Effective Rate 5.81%   5.89%  
Fair Value of Assets Transfered and Accounted for as Secured Borrowings $ 139,800   $ 134,800  
RTL Securitization        
Borrowings [Line Items]        
Other secured borrowings, at fair value(1) $ 284,100   $ 285,300  
Debt Instrument, Interest Rate, Effective Rate 5.65%   5.65%  
Warehouse LOC        
Borrowings [Line Items]        
Other secured borrowings(1) $ 50,100   $ 77,900  
Fair Value of Assets Transfered and Accounted for as Secured Borrowings $ 56,800   $ 85,300  
Minimum        
Borrowings [Line Items]        
Reverse Repurchase Agreements Maturity 30 days      
Repurchase agreements, remaining days to maturity 1 day 2 days    
Repurchase Agreements Interest Rate 2.82%   2.79%  
Maximum        
Borrowings [Line Items]        
Reverse Repurchase Agreements Maturity 364 days      
Repurchase agreements, remaining days to maturity 736 days 636 days    
Repurchase Agreements Interest Rate 6.94%   7.05%  
Maximum | Secured Borrowing Facility Collateralized by Proprietary Reverse Loans        
Borrowings [Line Items]        
Additional Working Capital Advances $ 20,000      
Repurchase Agreements        
Borrowings [Line Items]        
Securities Collateral relating to Reverse Repurchase Agreements 2,778,886   $ 2,624,163  
Cash collateral posted for securities sold under agreements to repurchase 12,000   6,900  
Securitized residential mortgage loans        
Borrowings [Line Items]        
Fair Value of Assets Transfered and Accounted for as Secured Borrowings 1,310,000   1,350,000  
HECM loans | GNMA HMBS        
Borrowings [Line Items]        
Fair Value of Assets Transfered and Accounted for as Secured Borrowings 10,900,000   10,500,000  
Securitized Reverse Mortgage Loans        
Borrowings [Line Items]        
Fair Value of Assets Transfered and Accounted for as Secured Borrowings 1,630,000   1,400,000  
Cash and Cash Equivalents, at Carrying Value 26,200   26,000  
Investment related receivables(1) 13,900   19,900  
Securitized European Residential Mortgage Loans        
Borrowings [Line Items]        
Fair Value of Assets Transfered and Accounted for as Secured Borrowings 25,700   27,500  
Cash and Cash Equivalents, at Carrying Value 1,900   1,600  
RTL Securitization        
Borrowings [Line Items]        
Fair Value of Assets Transfered and Accounted for as Secured Borrowings 283,100   193,000  
Cash and Cash Equivalents, at Carrying Value 500   107,700  
Investment related receivables(1) 18,900   $ 3,100  
5.875% Senior Notes | Unsecured Borrowings        
Borrowings [Line Items]        
Debt Instrument, Face Amount $ 210,000      
Debt Instrument, Interest Rate, Stated Percentage 5.875%      
Redemption percentage 100.00%      
Debt Instrument, Maturity Date Apr. 01, 2027      
6.75% Senior Notes | Unsecured Borrowings        
Borrowings [Line Items]        
Debt Instrument, Face Amount $ 34,900      
Debt Instrument, Interest Rate, Stated Percentage 6.75%      
Debt Instrument, Maturity Date Mar. 15, 2025      
6.00% Senior Notes | Unsecured Borrowings        
Borrowings [Line Items]        
Debt Instrument, Face Amount $ 37,800      
Debt Instrument, Interest Rate, Stated Percentage 6.00%      
Debt Instrument, Maturity Date Aug. 01, 2026      
Trusted Preferred Debt | Unsecured Borrowings        
Borrowings [Line Items]        
Debt Instrument, Face Amount $ 15,000      
Trusted Preferred Debt | Unsecured Borrowings | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | October 7, 2033        
Borrowings [Line Items]        
Debt Instrument, Face Amount $ 10,000      
Debt Instrument, Maturity Date Oct. 07, 2033      
Debt Instrument, Basis Spread on Variable Rate 3.26%      
Trusted Preferred Debt | Unsecured Borrowings | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | July 5, 2035        
Borrowings [Line Items]        
Debt Instrument, Face Amount $ 5,000      
Debt Instrument, Maturity Date Jul. 07, 2035      
Debt Instrument, Basis Spread on Variable Rate 2.51%      
7.375% Senior Notes | Unsecured Borrowings        
Borrowings [Line Items]        
Debt Instrument, Face Amount $ 400,000      
Debt Instrument, Interest Rate, Stated Percentage 7.375%      
Debt Instrument, Maturity Date Sep. 30, 2030      
7.375% Senior Notes | Unsecured Borrowings | Debt Instrument, Redemption, Period One        
Borrowings [Line Items]        
Redemption percentage 103.688%      
7.375% Senior Notes | Unsecured Borrowings | Debt Instrument, Redemption, Period Two        
Borrowings [Line Items]        
Redemption percentage 101.844%      
7.375% Senior Notes | Unsecured Borrowings | Debt Instrument, Redemption, Period Three        
Borrowings [Line Items]        
Redemption percentage 100.00%      
[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.