Note 9 - Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Net income (loss)	$ 37,328	$ (44,567)
Basic (in shares)	25,868	8,408
Effect of dilutive securities: Stock options, restricted shares and performance based shares (in shares)	0	0
Denominator for diluted earnings per share - adjusted weighted-average shares and assumed exercise of options, restricted shares and performance based shares (in shares)	25,868	8,408
Net (loss) income per common share - basic (in dollars per share)	$ 1.44	$ (5.30)
Net (loss) income per common share - diluted (in dollars per share)	$ 1.44	$ (5.30)