Annual report pursuant to Section 13 and 15(d)

Note 7 - Income Taxes - Foreign Rate Differentials (Details)

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Note 7 - Income Taxes - Foreign Rate Differentials (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Foreign $ 1,927 $ 1,584
Department for International Tax Cooperation [Member]    
Statutory Tax Rate 0.00%  
Foreign $ 2,005 1,104
Inland Revenue, Hong Kong [Member]    
Statutory Tax Rate 16.50%  
Foreign $ 665 1,105
State Administration of Taxation, China [Member]    
Statutory Tax Rate 25.00%  
Foreign $ 48 $ 143