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

Summary of Significant Accounting Policies (Details - Marketable securities)

v3.25.1
Summary of Significant Accounting Policies (Details - Marketable securities) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Platform Operator, Crypto Asset [Line Items]    
Total Fair Value $ 2,029 $ 11,950
Corporate Bond Securities [Member]    
Platform Operator, Crypto Asset [Line Items]    
Total Fair Value 537 5,908
US Agency And Government Sponsored Securities [Member]    
Platform Operator, Crypto Asset [Line Items]    
Total Fair Value 1,107 1,852
US Treasury Notes Securities [Member]    
Platform Operator, Crypto Asset [Line Items]    
Total Fair Value 385 $ 3,581
Fair Value, Inputs, Level 1 [Member]    
Platform Operator, Crypto Asset [Line Items]    
Total Fair Value 537  
Fair Value, Inputs, Level 1 [Member] | Corporate Bond Securities [Member]    
Platform Operator, Crypto Asset [Line Items]    
Total Fair Value 537  
Fair Value, Inputs, Level 1 [Member] | US Agency And Government Sponsored Securities [Member]    
Platform Operator, Crypto Asset [Line Items]    
Total Fair Value 0  
Fair Value, Inputs, Level 1 [Member] | US Treasury Notes Securities [Member]    
Platform Operator, Crypto Asset [Line Items]    
Total Fair Value 0  
Fair Value, Inputs, Level 2 [Member]    
Platform Operator, Crypto Asset [Line Items]    
Total Fair Value 1,492  
Fair Value, Inputs, Level 2 [Member] | Corporate Bond Securities [Member]    
Platform Operator, Crypto Asset [Line Items]    
Total Fair Value 0  
Fair Value, Inputs, Level 2 [Member] | US Agency And Government Sponsored Securities [Member]    
Platform Operator, Crypto Asset [Line Items]    
Total Fair Value 1,107  
Fair Value, Inputs, Level 2 [Member] | US Treasury Notes Securities [Member]    
Platform Operator, Crypto Asset [Line Items]    
Total Fair Value $ 385