Note 5 - Earnings (Loss) Per Common Share - Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Notes To Financial Statements [Abstract]
Net Income (Loss)	$ 27,870	$ (15,694)	$ 22,117	$ (18,867)
Preferred stock dividends	(138)	(138)	(276)	(276)
Net income (loss) applicable to common stockholders	$ 27,732	$ (15,832)	$ 21,841	$ (19,143)
Basic weighted average common shares	617,106	604,088	616,649	602,077
Dilutive restricted stock units, warrants and deferred shares	5,100	0	5,287	0
Diluted weighted average common shares	622,206	604,088	621,936	602,077
Basic earnings (loss) per common share	$ 0.04	$ (0.03)	$ 0.04	$ (0.03)
Diluted earnings (loss) per common share	$ 0.04	$ (0.03)	$ 0.04	$ (0.03)