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INTEREST INCOME AND INTEREST EXPENSE (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Interest income
Agency securities	$ 751,516	$ 603,102
Residential credit securities	55,996	53,745
Residential mortgage loans	252,016	147,231
Commercial investment portfolio	3,554	9,887
Reverse repurchase agreements	31,406	4,285
Total interest income	1,094,488	818,250
Interest expense
Repurchase agreements	897,598	698,742
Debt issued by securitization vehicles	161,017	88,934
Participations issued	20,251	11,111
U.S. Treasury securities sold, not yet purchased	22,073	0
Total interest expense	1,100,939	798,787
Net interest income	$ (6,451)	$ 19,463

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