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Note 11 - Net Loss Per Share of Common Stock - Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Net loss from continuing operations $ (2,750) $ (20,632) $ (10,339) $ (18,397)
Net loss from discontinued operations (2,207) (1,672) (5,308) (6,726)
Net loss $ (4,957) $ (22,304) $ (15,647) $ (25,123)
Basic and diluted (in shares) 23,605 23,211 23,473 23,163
Basic and diluted net loss per share from continuing operation (in dollars per share) $ (0.12) $ (0.89) $ (0.44) $ (0.79)
Basic and diluted net loss per share from discontinued operation (in dollars per share) (0.09) (0.07) (0.23) (0.29)
Basic and diluted net loss per share (in dollars per share) $ (0.21) $ (0.96) $ (0.67) $ (1.08)