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Note 5 - Operating Lease Right-of-use (ROU) Asset, Net (Tables)
9 Months Ended
Sep. 30, 2025
Notes Tables  
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]

2025

  $ 125  

2026

    514  

2027

    44  

Total undiscounted lease payments

    683  

Less imputed interest

    45  

Total operating lease liabilities

  $ 638