Note 2 - Mortgage-backed Securities, at Fair Value (Tables)

3 Months Ended

Mar. 31, 2026

Notes Tables

Marketable Securities [Table Text Block]

(in thousands)
	March 31, 2026						December 31, 2025
	Par Value		Cost(1)		Fair Value		Par Value		Cost(1)		Fair Value
Pass-Through RMBS Certificates:
Fixed-rate RMBS	$	11,161,389	$	11,376,248	$	11,326,089	$	10,345,029	$	10,558,236	$	10,615,570
Other(2)(3)(4)				15,467		12,452				16,103		13,088
Total	$	11,161,389	$	11,391,715	$	11,338,541	$	10,345,029	$	10,574,339	$	10,628,658

Gain (Loss) on Securities [Table Text Block]

(in thousands)
	Three Months Ended March 31,
	2026			2025
Proceeds from sales of RMBS	$	25,006		$	168,634
Carrying value of RMBS sold		(24,967	)		(169,932	)
Net gain (loss) on sales of RMBS	$	39		$	(1,298	)
Gross gain on sales of RMBS	$	39		$	-
Gross loss on sales of RMBS		-			(1,298	)
Net gain (loss) on sales of RMBS	$	39		$	(1,298	)