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Note 2 - Loss Per Share - Basic and Diluted Income (Loss) Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Net loss $ (6,276) $ (31,943)
Weighted average shares outstanding (in shares) 13,572,224 13,368,380
Weighted average restricted shares vested not delivered (in shares) 329,941 282,772
Total basic weighted average shares outstanding (in shares) 13,902,165 13,651,152
Total diluted weighted average shares outstanding (in shares) 13,902,165 13,651,152
Basic (in dollars per share) $ (0.45) $ (2.34)
Diluted (in dollars per share) $ (0.45) $ (2.34)
Restricted Stock Units (RSUs) [Member]    
Dilutive effect of assumed conversion of restricted stock units (in shares) 0 0