Counterparty Risk (Cash and Cash Equivalents) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022		Mar. 31, 2022	Dec. 31, 2021
Concentration Risk [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 188,555	$ 217,053	[1]	$ 363,529	$ 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.