Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Thousands		Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Receivables and claims related to reverse mortgage loans repurchased from HMBS		$ 1,179		$ 1,239
Prepaid expenses and deferred offering costs		13,379		12,396
Accrued Fees and Other Revenue Receivable		2,676		4,985
Operating Lease, Right-of-Use Asset		4,132		5,161
Prepaid scheduled draws on reverse mortgage loans		3,558		3,375
Intangible Assets, Net (Excluding Goodwill)		1,920	$ 2,046	2,171	$ 2,422	$ 2,548	$ 2,673
Property, Plant and Equipment, Net		1,058		1,360
Certificates of deposit, security deposits, and escrow cash		840		1,604
Loan Purchase Commitments, at Fair Value		4,009		0
Other Assets, Miscellaneous		232		513
Other assets(1)	[1]	$ 32,983		$ 32,804

[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.