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Note 10 - Stock-based Compensation - Schedule of Stock Based Compensation Award Activity (Details)
shares in Thousands
3 Months Ended
Mar. 31, 2024
shares
Balance (in shares) 60
Balance (in shares) 60
Stock Plan 2019 [Member]  
Balance (in shares) 595
Restricted stock units (RSUs) granted (in shares) (114)
RSUs forfeited or expired (in shares) 1
Balance (in shares) 482