Investments in Unconsolidated Entities (Summarized Financial Information) (Details) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
Other assets(1)	[1]	$ 32,983				$ 32,983		$ 32,804
Total Assets		17,071,895				17,071,895		16,317,028
Liabilities		15,382,385				15,382,385		14,726,206
Stockholders' Equity Attributable to Parent		1,665,552				1,665,552		1,570,476
Total Liabilities and Equity		17,071,895				17,071,895		$ 16,317,028
Interest income		115,471		$ 100,470		231,384	$ 201,990
Interest expense		(72,128)		(66,874)		(144,784)	(137,338)
Interest Income (Expense), Operating		43,343		33,596		86,600	64,652
Other, net		12,295		7,652		36,563	15,161
Noninterest Income		49,199		57,561		88,850	102,045
Operating Expenses		57,066		42,985		109,050	86,640
Net income (loss) attributable to common stockholders		42,923		52,347		74,572	79,262
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 51,073	$ 39,324	$ 60,072	$ 34,051	$ 90,397	$ 94,123

[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.