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Note 14 - Earnings Per Share - Computations 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
Dec. 31, 2020
Net income (loss) $ 90,672 $ 76,516 $ 17,827
Basic weighted average common shares outstanding(1) (in shares) 22,246 22,715 23,008
Dilutive effect of common stock equivalents (in shares) 190 149 64
Diluted weighted average common shares outstanding(1) (in shares) 22,436 22,864 23,072
Basic earnings per share (in dollars per share) $ 4.08 $ 3.37 $ 0.77
Diluted earnings per share (in dollars per share) $ 4.04 $ 3.35 $ 0.77