Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Thousands		Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Receivables and claims related to reverse mortgage loans repurchased from HMBS		$ 40,454	$ 48,468
Prepaid expenses and deferred offering costs		12,605	11,602
Accrued Fees and Other Revenue Receivable		7,230	3,755
Operating Lease, Right-of-Use Asset		5,773	3,279
Prepaid scheduled draws on reverse mortgage loans		3,325	2,800
Intangible Assets, Net (Excluding Goodwill)		2,548	2,673	$ 3,049	$ 3,275
Servicing Asset		324	1,327
Property, Plant and Equipment, Net		1,580	1,110
Servicing Agreement Asset		300	1,300
Certificates of deposit, security deposits, and escrow cash		858	1,043
Other Assets, Miscellaneous		725	1,042
Other assets(1)	[1]	$ 75,422	$ 77,099

[1] Ellington Financial Inc.'s 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.