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Note 2 - Prepaid Expenses and Other Current Assets (Tables)
6 Months Ended
Jun. 30, 2023
Notes Tables  
Schedule of Prepaid Expense and Other Current Assets [Table Text Block]
  

June 30,

  

December 31,

 
  

2023

  

2022

 

Prepaid subscriptions

 $578  $423 

Prepaid insurance

  157   619 

Prepaid marketing and sponsorships

  246    

Debt and equity issuance costs

  12,088    

Other

  259   107 

Total prepaid expenses and other current assets

 $13,328  $1,149