Note 11 - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net income	$ 5,291	$ 21,344
Basic (in shares)	23,132	23,735
Effect of dilutive potential common shares (in shares)	179	215
Diluted weighted average shares outstanding (in shares)	23,311	23,950
Basic (in dollars per share)	$ 0.23	$ 0.90
Diluted (in dollars per share)	$ 0.23	$ 0.89