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Note 4 - Prepaid Expenses and Other Current Assets
12 Months Ended
Dec. 31, 2023
Notes to Financial Statements  
Prepaid Expenses and Other Current Assets [Text Block]

Note 4. Prepaid Expenses and Other Current Assets

 

Prepaid expenses and other current assets as of December 31, 2023 and 2022 were as follows:

 

   

December 31,

   

December 31,

 

(in thousands)

 

2023

   

2022

 

Research and development tax credits receivable

  $ 1,195     $ 2,777  

Metals to be used in research and development

    1,909       2,290  

Other

    568       581  

Total prepaid expenses and other current assets

  $ 3,672     $ 5,648