Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Net Loss Per Share - Summary of Significant Accounting Policies - Net Loss Per Common Share (Details)

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Note 11 - Net Loss Per Share - Summary of Significant Accounting Policies - Net Loss Per Common Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2023
Sep. 30, 2022
Net loss $ (4,471) $ (4,477) $ (5,272) $ (3,059) $ (3,358) $ (3,508) $ (14,220) $ (9,925)
Weighted average shares outstanding—basic and diluted (in shares) 37,949,422     26,443,067     30,751,329 26,443,067
Basic and diluted net loss per share (in dollars per share) $ (0.12)     $ (0.12)     $ (0.46) $ (0.38)