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v3.25.1

Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Oct. 30, 2024 USD ($) | Jan. 25, 2024 USD ($) shares | Nov. 22, 2023 | Mar. 23, 2023 | Nov. 22, 2022 USD ($) | Dec. 31, 2024 USD ($) shares | Dec. 31, 2023 USD ($) shares
Number of Financial Institutions |  |  |  |  |  | 1 |
Cash, Uninsured Amount |  |  |  |  |  | $ 6,825 |
Treasury Stock, Shares, Acquired (in shares) | shares |  | 52,000 |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method |  | $ 650 |  |  |  | $ 651 |
Treasury Stock, Common, Shares (in shares) | shares |  | 342,080 |  |  |  | 342,080 | 290,080
Operating Income (Loss) |  |  |  |  |  | $ 7,828 | $ (777)
Advertising Expense |  |  |  |  |  | 496 | 478
Research and Development Expense |  |  |  |  |  | $ 7,841 | $ 9,334
Product Warranty Obligation, Term (Year) |  |  |  |  |  | 2 years | 5 years
Number of Reportable Segments |  |  |  |  |  | 1 |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |
Share-Based Payment Arrangement, Expense |  |  |  |  |  | $ 494 | $ 1,143
Reverse Stock Split [Member] |  |  |  |  |  |  |
Stockholders' Equity Note, Stock Split, Conversion Ratio |  |  |  | 5 |  |  |
Fifth Third Credit Agreement [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Line of Credit Facility, Expiration Period (Year) | 1 year |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 6,000 |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity, Accordion Feature | 4,000 |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity, Including Accordion Feature, Total | $ 10,000 |  |  |  |  |  |
Alterna Capital Solutions, LLC [Member] | Invoice Purchase and Security Agreement [Member] |  |  |  |  |  |  |
Line of Credit Facility, Expiration Period (Year) |  |  | 1 year |  | 1 year |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | $ 15,000 |  |
FG Holdings LLC. [Member] |  |  |  |  |  |  |
Realized Investment Gains (Losses) |  | $ (91) |  |  |  |  |
Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member] | Non-US [Member] |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  | 17.00% | 16.00%
Number of Major Suppliers |  |  |  |  |  | 7 | 12
Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member] | Non-US [Member] | Seven Suppliers [Member] |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  | 79.90% |
Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member] | Non-US [Member] | Twelve Suppliers [Member] |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  | 94.80%
United States Government Agencies [Member] |  |  |  |  |  |  |
Accounts Receivable, after Allowance for Credit Loss |  |  |  |  |  | $ 600 | $ 1,445
Minimum [Member] |  |  |  |  |  |  |
Product Warranty Obligation, Term (Year) |  |  |  |  |  | 2 years |
Maximum [Member] |  |  |  |  |  |  |
Product Warranty Obligation, Term (Year) |  |  |  |  |  | 5 years |
Machinery and Equipment [Member] | Minimum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  |  |  |  | 3 years |
Machinery and Equipment [Member] | Maximum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  |  |  |  | 10 years |
Leasehold Improvements [Member] | Minimum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  |  |  |  | 5 years |
Leasehold Improvements [Member] | Maximum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  |  |  |  | 8 years |

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