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Note 14 - Basic and Diluted Net Loss Per Share (Tables)
6 Months Ended
Jun. 30, 2024
Notes Tables  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
   

June 30,

 
   

2024

   

2023

 

Stock options

    15,886,489       10,602,414  

Nonvested restricted stock units

    20,427,833       12,938,688  

Stock warrants

    24,830,500       1,021,076  

Total

    61,144,822       24,562,178