Note 5 - Derivative and Other Hedging Instruments - Schedule of Derivative Instruments in Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Restricted Cash and Cash Equivalent, Current	$ 58,696	$ 25,723
TBA securities	(1,567)	(5,395)
Not Designated as Hedging Instrument, Economic Hedge [Member]
Derivative assets, at fair value	9,252	9,277
Derivative liabilities, at fair value	1,846	332
Total margin balances on derivative contracts	7,165	(1,377)
Not Designated as Hedging Instrument, Economic Hedge [Member] | Interest Rate Swap [Member]
Derivative assets, at fair value	8,237	4,574
Not Designated as Hedging Instrument, Economic Hedge [Member] | TBA Contracts [Member]
Derivative assets, at fair value	1,015	4,703
Derivative liabilities, at fair value	1,846	332
Restricted Cash and Cash Equivalent, Current	2,394	280
TBA securities	(360)	(4,282)
Not Designated as Hedging Instrument, Economic Hedge [Member] | Eurodollar Future Margin [Member]
Restricted Cash and Cash Equivalent, Current	$ 5,131	$ 2,625