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Note 7 - Net Income (Loss) Per Share (Details Textual) - $ / shares
shares in Thousands
6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Share-Based Payment Arrangement, Option [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 8 18
Share-Based Payment Arrangement, Option [Member] | Minimum [Member]    
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share) $ 10.37 $ 10.37
Share-Based Payment Arrangement, Option [Member] | Maximum [Member]    
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share)   $ 17.11
Restricted Stock, Performance-based Stock Units, and Deferred Stock Units [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 400 100