Note 9 - Derivative Financial Instruments - Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Derivative financial instruments, fair value, net	$ 34,459	$ 20,403
TBA and Other Forward MBS [Member] | Long [Member]
Derivative financial instruments, fair value, net	14,975	4,651
TBA and Other Forward MBS [Member] | Short [Member]
Derivative financial instruments, fair value, net	(13,801)	(4,245)
Equity Derivatives [Member] | Long [Member]
Derivative financial instruments, fair value, net	(11)	0
Equity Derivatives [Member] | Short [Member]
Derivative financial instruments, fair value, net	$ 33,296	$ 19,997