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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Notes To Financial Statements [Abstract]
Net Income (Loss)	$ 1,761	$ (22,415)	$ 23,878	$ (41,282)
Preferred stock dividends	(138)	(138)	(414)	(414)
Net income (loss) applicable to common stockholders	$ 1,623	$ (22,553)	$ 23,464	$ (41,696)
Basic weighted average common shares	621,921	607,896	618,419	604,028
Dilutive restricted stock units, warrants and deferred shares	3,818	0	3,373	0
Diluted weighted average common shares	625,739	607,896	621,792	604,028
Basic earnings (loss) per common share	$ 0	$ (0.04)	$ 0.04	$ (0.07)
Diluted earnings (loss) per common share	$ 0	$ (0.04)	$ 0.04	$ (0.07)