Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Summary of Significant Accounting Policies (Tables)

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Note 2 - Summary of Significant Accounting Policies (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Revenue from External Customers by Geographic Areas [Table Text Block]
   

Three Months Ended

   

Six Months Ended

 
   

June 30,

   

June 30,

 
   

2021

   

2020

   

2021

   

2020

 
                                 

North America

  $ 994     $ 116     $ 1,919     $ 804  

Asia Pacific

    658       588       1,177       1,185  

Europe and Middle East

    2       -       8       5  

Latin America

    -       -       -       14  

Total

  $ 1,654     $ 704     $ 3,104     $ 2,008  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
     

Six Months Ended

 
     

June 30,

 
     

2021

   

2020

 
                   

Convertible preferred stock:

                 

Series A convertible preferred stock

(a)

    -       -  

Series B convertible preferred stock

(b)

    2,489,542       2,201,634  

Series C convertible preferred stock

(c)

    -       -  

Warrants to purchase common stock

    9,793,599       2,358,329  

Stock options to purchase common stock

    3,188,628       1,002,400  

Deferred restricted common stock units

    684,000       -  

Deferred restricted common stock awards

    232       249