Note 9 - Derivative Financial Instruments - Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Derivative financial instruments, fair value, net	$ (15,504)	$ (22,447)
TBA and Other Forward MBS [Member] | Long [Member]
Derivative financial instruments, fair value, net	2,768	7,470
TBA and Other Forward MBS [Member] | Short [Member]
Derivative financial instruments, fair value, net	(2,382)	(6,719)
Equity Derivatives [Member] | Short [Member]
Derivative financial instruments, fair value, net	956	1,447
Share Forward Liabilities [Member] | Short [Member]
Derivative financial instruments, fair value, net	$ (16,846)	$ (24,645)