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Note 9 - Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2024
Notes Tables  
Schedule of Asset Retirement Obligations [Table Text Block]
  

December 31,

  

December 31,

 
  

2024

  

2023

 
  

US$

  

US$

 
  

thousands

  

thousands

 

Asset Retirement Obligations, Beginning Balance

  571   571 

Liabilities Settled

  -   - 

Revision of Estimate

  -   - 

Retirement Obligations, Ending Balance

  571   571 
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
  

US$

 
  

thousands

 

2025

  157 

2026

  157 

2027

  152 

2028

  151 

Thereafter

  315 

Total undiscounted future minimum lease payments

  932 

Less: portion representing imputed interest

  (188)

Total undiscounted future minimum lease payments

  744 
Office and Vehicle Leases [Member]  
Notes Tables  
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
  

US$

 
  

thousands

 

2025

  157 

2026

  157 

2027

  152 

2028 and thereafter

  278 
   744