Investment in Loans - Schedule of Unpoolable HECM Loans (Details) - USD ($) $ in Thousands		Jun. 30, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance		$ 14,162,891	$ 13,657,446
Loans, at fair value(1)(2)	[1],[2]	14,668,365	13,999,572
Reverse mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance		10,484,715	9,585,110
Loans, at fair value(1)(2)		11,105,608	10,097,279
Reverse mortgage loans | Unpoolable HECM loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance		39,658	28,952
Loans, at fair value(1)(2)		34,882	23,901
Reverse mortgage loans | Unpoolable HECM loans | Assignable buyout
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance		12,446	8,487
Loans, at fair value(1)(2)		11,855	7,773
Reverse mortgage loans | Unpoolable HECM loans | Non-assignable buyout
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance		21,881	15,479
Loans, at fair value(1)(2)		17,696	11,140
Reverse mortgage loans | Unpoolable HECM loans | Inactive HECM tail loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance		5,331	4,986
Loans, at fair value(1)(2)		$ 5,331	$ 4,988

[1] Ellington Financial Inc.'s Condensed Consolidated Balance Sheets include assets and liabilities of variable interest entities it has consolidated. See Note 12 for additional details on Ellington Financial Inc.'s consolidated variable interest entities.

[2] Includes assets pledged as collateral to counterparties. See Note 14 for additional details on the Company's borrowings and related collateral.