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Note 2 - Prepaid Expenses and Other Current Assets (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Schedule of Prepaid Expense and Other Current Assets [Table Text Block]
  

June 30,

  

December 31,

 
  

2020

  

2019

 

Prepaid subscriptions

 $298  $161 

Prepaid insurance

  75   292 

Prepaid marketing and sponsorships

  194   25 

Other

  311   381 

Total prepaid expenses and other current assets

 $878  $859