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Note 2 - Summary of Significant Accounting Policies - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Net loss $ (3,415) $ (9,516)
Weighted average shares outstanding - basic (in shares) 42,420 41,413
Dilutive effect of equity awards (in shares) 0 0
Weighted average shares outstanding - diluted (in shares) 42,420 41,413
Basic loss per share (in dollars per share) $ (0.08) $ (0.23)
Diluted loss per share (in dollars per share) $ (0.08) $ (0.23)
Shares excluded from diluted loss per share due to their anti-dilutive effect (in shares) 3,868 3,661