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Organization and Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Organization and Summary of Significant Accounting Policies [Line Items]                
Foreign currency translation gains (losses)     $ (55)   $ (32)   $ (189) $ (66)
General and administrative expenses     12,000   3,000   68,000 2,000
Net loss     (1,868) $ (1,733) (1,695) $ (2,084) (3,601) (3,779)
Accumulated deficit $ (227,681) $ (224,080) (227,681)       (227,681)  
Operating activities by cash             (3,110) (3,135)
Revenue related to contract liabilities     $ 25,000   $ 0   $ 25,000 $ 2,000
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 95.00% 80.90%            
Customer Concentration Risk [Member] | Commercial Vehicle OEM [Member] | Revenue Benchmark [Member]                
Organization and Summary of Significant Accounting Policies [Line Items]                
Concentration of credit and business risks percentage     21.30%   24.80%   34.10% 13.80%
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     23.80%   25.30%   30.80% 22.50%
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     19.30%   16.80%   19.10% 23.90%
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     22.30%   23.20%   17.50% 23.00%