v3.20.4

Counterparty Risk (Cash and Cash Equivalents) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | [1] | Dec. 31, 2019 | [1] | Dec. 31, 2018
--- | --- | --- | --- | --- | ---
Concentration Risk [Line Items] |  |  |
Cash and Cash Equivalents, at Carrying Value | $ 111,647 | $ 72,302 | $ 44,656
Bank of New York Mellon Corporation [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage, cash and cash equivalents |  |  | 64.00%
Deutsche Bank Securities [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage, cash and cash equivalents |  |  | 5.00%
Bank of America Securities [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage, cash and cash equivalents |  |  | 2.00%
Morgan Stanley Institutional Liquidity Fund - Government Portfolio [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage, cash and cash equivalents |  |  | 10.00%
BlackRock Liquidity Funds FedFund Portfolio, Institutional Class Shares [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage, cash and cash equivalents |  |  | 9.00%
Goldman Sachs Financial Square Funds - Government Fund [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage, cash and cash equivalents |  |  | 9.00%
US Bank N.A. [Member] |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk percentage, cash and cash equivalents |  |  | 1.00%
[1] | Ellington Financial Inc.'s 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.

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