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Note 10 - Net Income (Loss) Per Share of Common Stock - Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Net loss $ (5,818) $ (1,123) $ (10,690) $ (2,819)
Basic and diluted (in shares) 23,476 23,174 23,405 23,139
Diluted weighted average common stock outstanding (in shares) 23,476 23,174 23,405 23,139
Basic and diluted net loss per share (in dollars per share) $ (0.25) $ (0.05) $ (0.46) $ (0.12)