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Organization and Summary of Significant Accounting Policies (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Organization and Summary of Significant Accounting Policies [Line Items]      
Foreign currency translation gains (losses) $ (134,000) $ (34,000)  
General and administrative expenses 80,000 5,000  
Net loss (1,733,000) (2,084,000)  
Accumulated deficit (225,813,000) (224,100,000) $ (224,080,000)
Operating activities by cash (1,360,000) (1,915,000)  
Revenue related to contract liabilities $ 0 $ 27,000  
Customer Concentration Risk [Member] | Customers [Member] | Accounts Receivable [Member]      
Organization and Summary of Significant Accounting Policies [Line Items]      
Concentration of credit and business risks percentage 94.00%   80.90%
Customer Concentration Risk [Member] | Seiko Epson [Member] | Revenue Benchmark [Member]      
Organization and Summary of Significant Accounting Policies [Line Items]      
Concentration of credit and business risks percentage 39.02% 19.60%  
Customer Concentration Risk [Member] | Alps Alpine [Member] | Revenue Benchmark [Member]      
Organization and Summary of Significant Accounting Policies [Line Items]      
Concentration of credit and business risks percentage 27.80% 22.90%  
Customer Concentration Risk [Member] | Hewlett Packard Company [Member] | Revenue Benchmark [Member]      
Organization and Summary of Significant Accounting Policies [Line Items]      
Concentration of credit and business risks percentage 19.60% 30.90%