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Note 14 - Shares Outstanding and Earnings Per Share - Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Weighted average basic shares outstanding (in shares) 11,570 11,559
Assumed exercise of stock options and issuance of stock awards (in shares) 1 4
Weighted average diluted shares outstanding (in shares) 11,571 11,563
Net income $ 9,872 $ 37,302
Basic earnings per share (in dollars per share) $ 0.85 $ 3.23
Diluted earnings per share (in dollars per share) $ 0.85 $ 3.23
Unvested RSUs (in shares) 226 201