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Note 7 - Accrued Expenses (Tables)
9 Months Ended
Sep. 30, 2024
Notes Tables  
Schedule of Accrued Liabilities [Table Text Block]
  

September 30,

  

December 31,

 
  

2024

  

2023

 

Compensation expense

 $2,306  $6,448 

Research and development fees

     968 

Accrued accounts payable

  60   558 

Other current liabilities

  1,031   363 

Accrued license obligations

  56   213 

Total

 $3,453  $8,550 
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]
  

Severance and Benefits Costs

 

Balance at June 30, 2024

 $2,850 

Adjustments to restructuring charges

 $183 

Cash payments

  (805)

Balance at September 30, 2024

 $2,228 
  

Severance and Benefits Costs

 

Balance at December 31, 2023

 $5,105 

Adjustments to restructuring charges

 $(86)

Cash payments

  (2,791)

Balance at September 30, 2024

 $2,228