v3.19.1

Borrowings (Details) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Feb. 13, 2019 USD ($) | Aug. 18, 2017 USD ($) | Mar. 31, 2019 USD ($) counterparty | Dec. 31, 2018 USD ($) counterparty | Mar. 31, 2018 USD ($)
Borrowings [Line Items] |  |  |  |  |  |  |
Total secured borrowings |  |  |  | $ 1,949,000 |  | $ 1,911,000 |
Concentration Risk, Reverse Repurchase Agreements |  |  |  |  |  | 21.00% |
Number of Counterparties With Concentration Risk, Reverse Repurchase Agreements | counterparty |  |  |  |  |  | 1 |
Number of Counterparties with Outstanding Reverse Repurchase Agreements | counterparty |  |  |  | 24 |  | 23 |
Investments held with dealers as collateral |  |  |  | $ 1,850,000 |  | $ 1,790,000 |
Pledged Financial Instruments, Not Separately Reported, Securities For Repurchase Agreements Unsettled |  |  |  | $ 20,700 |  | $ 86,700 | $ 86,700
Repurchase Agreements amount at risk threshold |  |  |  | 10.00% |  | 10.00% |
Other secured borrowings |  |  |  | $ 117,315 | [1] | $ 114,100 |
Minimum |  |  |  |  |  |  |
Borrowings [Line Items] |  |  |  |  |  |  |
Reverse Repurchase Agreements Maturity |  |  |  | 30 days |  | 30 days |
Reverse Repurchase Agreements Remaining Terms |  |  |  | 1 day |  | 2 days |
Reverse Repurchase Agreements Interest Rate |  |  |  | 0.24% |  | 0.23% |
Maximum |  |  |  |  |  |  |
Borrowings [Line Items] |  |  |  |  |  |  |
Reverse Repurchase Agreements Maturity |  |  |  | 180 days |  | 180 days |
Reverse Repurchase Agreements Remaining Terms |  |  |  | 781 days |  | 871 days |
Reverse Repurchase Agreements Interest Rate |  |  |  | 5.85% |  | 6.07% |
Reverse repurchase agreements |  |  |  |  |  |  |
Borrowings [Line Items] |  |  |  |  |  |  |
Cash collateral posted for securities sold under agreements to repurchase | [2],[3] |  |  | $ 13,900 |  | $ 17,000 |
Security Owned and Pledged as Collateral, Fair Value |  |  |  | 200 |  | 200 |
Securitized residential mortgage loans |  |  |  |  |  |  |
Borrowings [Line Items] |  |  |  |  |  |  |
Fair Value of Assets Transfered and Accounted for as Secured Borrowings |  |  |  | 296,400 |  | 314,200 |
Secured borrowing recourse facility collateralized by unsecured loan portfolio |  |  |  |  |  |  |
Borrowings [Line Items] |  |  |  |  |  |  |
Other secured borrowings |  |  |  | $ 11,400 |  | $ 13,200 |
Effective interest rate on borrowing |  |  |  | 4.75% |  | 4.72% |
Secured borrowing recourse facility collateralized by unsecured loan portfolio | Unsecured loans |  |  |  |  |  |  |
Borrowings [Line Items] |  |  |  |  |  |  |
Fair Value of Assets Transfered and Accounted for as Secured Borrowings |  |  |  | $ 20,200 |  | $ 20,300 |
Non-QM loan securitization |  |  |  |  |  |  |
Borrowings [Line Items] |  |  |  |  |  |  |
Other secured borrowings |  |  |  | $ 282,100 |  | $ 297,900 |
Effective interest rate on borrowing |  |  |  | 3.75% |  | 3.72% |
Secured borrowing facility collateralized by unsecured loan portfolio |  |  |  |  |  |  |
Borrowings [Line Items] |  |  |  |  |  |  |
Other secured borrowings |  |  |  | $ 105,900 |  | $ 101,000 |
Effective interest rate on borrowing |  |  |  | 4.67% |  | 4.68% |
Secured borrowing facility collateralized by unsecured loan portfolio | Unsecured loans |  |  |  |  |  |  |
Borrowings [Line Items] |  |  |  |  |  |  |
Fair Value of Assets Transfered and Accounted for as Secured Borrowings |  |  |  | $ 157,100 |  | $ 149,000 |
Senior Notes |  |  |  |  |  |  |
Borrowings [Line Items] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 86,000 | $ 86,000 |  |  |  |
Proceeds from Debt, Net of Issuance Costs |  |  | $ 84,700 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.50% | 5.25% |  |  |  |
Redemption percentage |  | 100.00% | 100.00% |  |  |  |
Debt Instrument, Maturity Date |  |  | Sep. 01, 2022 |  |  |  |
Effective interest rate on borrowing |  |  |  | 5.80% |  | 5.55% |
[1] | Ellington Financial Inc.'s Condensed Consolidated Balance Sheet includes assets and liabilities of variable interest entities it has consolidated. See Note 9 for additional details on Ellington Financial Inc.'s consolidated variable interest entities.
[2] | For the purpose of this presentation, for each row the total amount of financial instruments transferred or pledged and cash collateral (received) or pledged may not exceed the applicable gross amount of assets or (liabilities) as presented here. Therefore, the Company has reduced the amount of financial instruments transferred or pledged as collateral related to the Company's reverse repurchase agreements and cash collateral pledged on the Company's financial derivative liabilities. Total financial instruments transferred or pledged as collateral on the Company's reverse repurchase agreements as of December 31, 2018 were $1.79 billion. As of December 31, 2018 total cash collateral on financial derivative assets excludes excess net cash collateral pledged of $0.1 million. As of December 31, 2018 total cash collateral on financial derivative liabilities excludes excess cash collateral pledged of $16.4 million
[3] | When collateral is pledged to or pledged by a counterparty, it is often pledged or posted with respect to all positions with such counterparty, and in such cases such collateral cannot be specifically identified as relating to a specific asset or liability. As a result, in preparing the above tables, the Company has made assumptions in allocating pledged or posted collateral among the various rows.

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