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Note 7 - Earnings Per Share - Summary of Reconciliation of Earnings (Loss) Per Common Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Net loss — basic $ (9,270) $ (10,623) $ (19,608) $ (24,663)
Weighted average shares outstanding — basic (in shares) 21,392 20,162 21,061 20,128
Basic loss per share (in dollars per share) $ (0.43) $ (0.53) $ (0.93) $ (1.23)
Weighted average shares outstanding — diluted (in shares) 21,392 20,162 21,061 20,128
Diluted loss per share (in dollars per share) $ (0.43) $ (0.53) $ (0.93) $ (1.23)