Counterparty Risk (Narrative) (Details) - USD ($) $ in Thousands	Sep. 30, 2023		Dec. 31, 2022		Sep. 30, 2022	Dec. 31, 2021
Risks and Uncertainties [Abstract]
Cash and cash equivalents	$ 174,664	[1]	$ 217,053	[1]	$ 175,230	$ 92,661

[1] Ellington Financial Inc.'s Condensed Consolidated Balance Sheets include assets and liabilities of variable interest entities it has consolidated. See Note 11 for additional details on Ellington Financial Inc.'s consolidated variable interest entities.