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Note 3 - Prepaid Expenses and Other Current Assets (Tables)
12 Months Ended
Dec. 31, 2025
Notes Tables  
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]
  December 31, 
  

2025

  

2024

 

Prepaid insurance

 $493  $800 

Contract research organization and other deposits

  1,530   6,173 

Interest receivable

  120   947 

Other

  64   38 

Total prepaid expenses and other current assets

 $2,207  $7,958