Annual report [Section 13 and 15(d), not S-K Item 405]

Marketable Securities (Details - Investments in marketable securities)

v3.26.1
Marketable Securities (Details - Investments in marketable securities) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]    
Debt securities, available-for-sale, amortized cost $ 3,953 $ 2,116
Debt securities, available-for-sale, unrealized loss 25 (87)
Available-for-sale marketable securities with a fair value 3,978 2,029
US Treasury Securities [Member]    
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]    
Debt securities, available-for-sale, amortized cost 3,953  
Debt securities, available-for-sale, unrealized loss 25  
Available-for-sale marketable securities with a fair value $ 3,978  
Corporate Bond Securities [Member]    
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]    
Debt securities, available-for-sale, amortized cost   559
Debt securities, available-for-sale, unrealized loss   (22)
Available-for-sale marketable securities with a fair value   537
U.S. Agency and Government Sponsored Securities [Member]    
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]    
Debt securities, available-for-sale, amortized cost   1,155
Debt securities, available-for-sale, unrealized loss   (48)
Available-for-sale marketable securities with a fair value   1,107
US Treasury Notes Securities [Member]    
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items]    
Debt securities, available-for-sale, amortized cost   402
Debt securities, available-for-sale, unrealized loss   (17)
Available-for-sale marketable securities with a fair value   $ 385