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Note 3 - Prepaid Expenses and Other Current Assets (Tables)
12 Months Ended
Dec. 31, 2024
Notes Tables  
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]
  December 31, 
  

2024

  

2023

 

Prepaid insurance

 $800  $759 

Contract research organization and other deposits

  6,173   6,489 

Interest receivable

  947   962 

Other

  38   287 

Total prepaid expenses and other current assets

 $7,958  $8,497