Investment in Loans (Schedule of Investments in Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2022		Oct. 03, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current Principal/Notional Amount	$ 11,609,077			$ 2,366,724
Fair Value	11,626,008	[1],[2]	$ 7,698,426	2,415,321	[1],[2]
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current Principal/Notional Amount	3,404,544			1,969,874
Fair Value	3,115,518			2,016,228
Commercial mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current Principal/Notional Amount	406,721			326,438
Fair Value	404,324			326,197
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current Principal/Notional Amount	5,190			59,881
Fair Value	4,843			62,365
Corporate loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current Principal/Notional Amount	4,132			10,531
Fair Value	4,086			10,531
Reverse mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current Principal/Notional Amount	7,788,490			0
Fair Value	$ 8,097,237			$ 0

[1] Ellington Financial Inc.'s 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.

[2] Includes assets pledged as collateral to counterparties. See Note 13 for additional details on the Company's borrowings and related collateral.