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Note 7 - Commitments and Contingencies (Tables)
9 Months Ended
Sep. 30, 2025
Notes Tables  
Lease, Cost [Table Text Block]
  

Three Months Ended September 30,

  

Nine Months Ended September 30,

 
  

2025

  

2024

  

2025

  

2024

 

Lease cost:

                

Operating lease cost

 $38  $37  $112  $112 

Variable lease cost

  7   7   22   17 

Total

 $45  $44  $134  $129