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Note 8 - Stock-based Compensation (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
3 Months Ended
Jan. 01, 2025
Mar. 31, 2025
Mar. 31, 2024
Jun. 30, 2020
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 27,600    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)   $ 2.68 $ 1.3  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value   $ 374 $ 600  
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount   $ 21,500    
Share-Based Payment Arrangement, Option [Member]        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition   1 year 7 months 6 days    
Restricted Stock Units (RSUs) [Member]        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 6,200    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition   1 year 8 months 12 days    
The 2020 Stock Option and Incentive Plan [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized       2.9
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized 5.5      
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant   1.9    
The 2020 Stock Option and Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   4 years    
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)   10 years