Note 9 - Derivative Financial Instruments (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Share Forward Liabilities [Member]
Gain (Loss) on Investments	$ 0	$ (2,950)	$ 0	$ (20,038)
Short [Member] | Equity Derivatives [Member]
Derivative Asset	73		73		$ 73
Short [Member] | TBA and Other Forward MBS [Member]
Derivative, Notional Amount	1,363,150		1,363,150		883,900
Short [Member] | Other Extended Settlement Trade [Member]
Derivative, Notional Amount	0		0
Long [Member] | TBA and Other Forward MBS [Member]
Derivative, Notional Amount	1,335,100		1,335,100		852,450
Long [Member] | Other Extended Settlement Trade [Member]
Derivative, Notional Amount	1		1
Call Option [Member] | Short [Member]
Derivative Assets (Liabilities), at Fair Value, Net	$ 64		$ 64		$ 0