Quarterly report [Sections 13 or 15(d)]

Basis of Presentation and Summary of Significant Accounting Policies (Details - Marketable securities)

v3.26.1
Basis of Presentation and Summary of Significant Accounting Policies (Details - Marketable securities) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Defined Benefit Plan Disclosure [Line Items]    
Investments in marketable securities $ 996 $ 3,978
Investment in equity interest 2,393 5,481
Foreign currency forward contracts (29) (43)
U.S. Treasury [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Investments in marketable securities 996 3,978
Investment in YFE [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Investment in equity interest 2,393 5,481
Foreign Currency Forward Contracts [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Foreign currency forward contracts (29) (43)
Fair Value, Inputs, Level 1 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Investments in marketable securities 996 3,978
Investment in equity interest 0 0
Foreign currency forward contracts 0 0
Fair Value, Inputs, Level 1 [Member] | U.S. Treasury [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Investments in marketable securities 996 3,978
Fair Value, Inputs, Level 1 [Member] | Investment in YFE [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Investment in equity interest 0 0
Fair Value, Inputs, Level 1 [Member] | Foreign Currency Forward Contracts [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Foreign currency forward contracts 0 0
Fair Value, Inputs, Level 2 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Investments in marketable securities 0 0
Investment in equity interest 2,393 5,481
Foreign currency forward contracts (29) (43)
Fair Value, Inputs, Level 2 [Member] | U.S. Treasury [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Investments in marketable securities 0 0
Fair Value, Inputs, Level 2 [Member] | Investment in YFE [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Investment in equity interest 2,393 5,481
Fair Value, Inputs, Level 2 [Member] | Foreign Currency Forward Contracts [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Foreign currency forward contracts $ (29) $ (43)