v3.26.1
Note 1 - Organization and Summary of Significant Accounting Policies (Details Textual)
 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax $ (246,000) $ (54,000)
Gain (Loss), Foreign Currency Transaction, before Tax 67,000 (1,000)
Net Income (Loss) Attributable to Parent 8,493,000 (6,466,000)
Retained Earnings (Accumulated Deficit) (215,587,000) (224,080,000)
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation (10,254,000) (5,592,000)
Accounts Receivable, after Allowance for Credit Loss 400,000 700,000
Accounts Receivable, Allowance for Credit Loss 0 0
Unrecognized Tax Benefits 0 0
Contract with Customer, Liability 37,000  
Contract with Customer, Liability, Revenue Recognized 0 2,000
Fair Value, Recurring [Member]    
Assets, Fair Value Disclosure 0 0
Liabilities, Fair Value Disclosure $ 0 $ 0
Customer Concentration Risk [Member] | Accounts Receivable [Member]    
Number of Customers 4 4
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Four Customers [Member]    
Concentration Risk, Percentage 95.40% 80.90%
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Seiko Epson [Member]    
Concentration Risk, Percentage 34.30% 27.30%
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Alps Alpine [Member]    
Concentration Risk, Percentage 19.40% 20.70%
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Hewlett-Packard Company [Member]    
Concentration Risk, Percentage 19.00% 20.40%
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Commercial Vehicle OEM [Member]    
Concentration Risk, Percentage 14.60% 11.80%