v3.26.1
Securitization Transactions (Schedule of Non-Consolidated Non-QM Securitizations (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Securitization Transactions [Line Items]      
Securities, at fair value(1)(2) [1],[2] $ 1,136,825   $ 1,034,882
Co-Sponsored Securitization      
Securitization Transactions [Line Items]      
Securities, at fair value(1)(2) 148,400   161,200
Non-QM loan securitization, not consolidated      
Securitization Transactions [Line Items]      
Securities, at fair value(1)(2) 232,700   $ 183,100
February 2025 | Non-QM loan securitization, not consolidated      
Securitization Transactions [Line Items]      
Total Face Amount of Certificates Issued   $ 259,707  
February 2025 | CES Loan Securitization, Not Consolidated      
Securitization Transactions [Line Items]      
Notes Issued by CES Securitization Trust   268,902  
February 2025 | The Company [Member] | Non-QM loan securitization, not consolidated      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust   148,189  
February 2025 | The Company [Member] | CES Loan Securitization, Not Consolidated      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust   185,273  
February 2025 | non-QM co-participant | Non-QM loan securitization, not consolidated      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust   111,518  
February 2025 | CES Co-Participant | CES Loan Securitization, Not Consolidated      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust   83,629  
March 2025 | CES Loan Securitization, Not Consolidated      
Securitization Transactions [Line Items]      
Notes Issued by CES Securitization Trust   290,116  
March 2025 | The Company [Member] | CES Loan Securitization, Not Consolidated      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust   166,527  
March 2025 | CES Co-Participant | CES Loan Securitization, Not Consolidated      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust   123,589  
January 2025 | Non-QM loan securitization, not consolidated      
Securitization Transactions [Line Items]      
Total Face Amount of Certificates Issued   269,632  
January 2025 | The Company [Member] | Non-QM loan securitization, not consolidated      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust   193,569  
January 2025 | non-QM co-participant | Non-QM loan securitization, not consolidated      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust   $ 76,063  
January 2026 | EFMT 2026-CES1      
Securitization Transactions [Line Items]      
Notes Issued by CES Securitization Trust 221,814    
January 2026 | The Company [Member] | EFMT 2026-CES1      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust 85,274    
January 2026 | non-QM co-participant | EFMT 2026-CES1      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust 136,540    
February 2026 | EFMT 2026-AE1      
Securitization Transactions [Line Items]      
Notes Issued by CES Securitization Trust 325,740    
February 2026 | EFMT 2026-NQM1      
Securitization Transactions [Line Items]      
Notes Issued by CES Securitization Trust 566,689    
February 2026 | EFMT 2026-INV2      
Securitization Transactions [Line Items]      
Notes Issued by CES Securitization Trust 409,142    
February 2026 | The Company [Member] | EFMT 2026-AE1      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust 231,322    
Cash Transferred into Securitization Trust 20,900    
February 2026 | The Company [Member] | EFMT 2026-NQM1      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust 478,683    
February 2026 | The Company [Member] | EFMT 2026-INV2      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust 295,007    
February 2026 | non-QM co-participant | EFMT 2026-AE1      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust 94,418    
February 2026 | non-QM co-participant | EFMT 2026-NQM1      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust 88,006    
February 2026 | non-QM co-participant | EFMT 2026-INV2      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust 114,135    
March 2026 | EFMT 2026-NQM3      
Securitization Transactions [Line Items]      
Notes Issued by CES Securitization Trust 508,501    
March 2026 | The Company [Member] | EFMT 2026-NQM3      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust 301,760    
March 2026 | non-QM co-participant | EFMT 2026-NQM3      
Securitization Transactions [Line Items]      
Closed End Second Lien Loans Transferred into Securitization Trust $ 206,741    
[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.