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Note 12 - Share-based Compensation - Share-based Compensation Expense (Details) - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Share-based compensation expense $ 410 $ 580
Basic earnings per share (in dollars per share) $ 0.02 $ 0.03
Diluted earnings per share (in dollars per share) $ 0.02 $ 0.03
Cost of Sales [Member]    
Share-based compensation expense $ 69 $ 83
Selling, General and Administrative Expenses [Member]    
Share-based compensation expense $ 341 $ 497