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v3.26.1

Note 1 - Organization and Significant Accounting Policies (Details Textual) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2023 USD ($) | Mar. 31, 2024 USD ($) | Dec. 31, 2025 USD ($) | Dec. 31, 2024 USD ($)
Number of Operating Segments |  |  | 2 |
Standard and Extended Product Warranty Accrual |  |  | $ 738,000 | $ 850,000
Product Warranty Expense |  |  | $ 272,000 | 435,000
Multi Employer Plans Collective Bargaining Arrangement Number of Participants |  |  | 224 |
Net Income (Loss) Attributable to Parent |  |  | $ (6,338,000) | (1,680,000)
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation |  |  | (5,731,000) | $ 2,004,000
Gill Family Capital Management [Member] | Promissory Notes With Maturity On April 1, 2024 And April 1, 2026 [Member] |  |  |  |
Debt Instrument, Increase (Decrease), Net | $ 2,500,000 | $ 5,500,000 | $ 3,000,000 |
Employee Benefit Related Adjustments Mexico [Member] |  |  |  |
Multi Employer Plans Collective Bargaining Arrangement Number of Participants |  |  | 200 |
Multiemployer Plan, Pension, Significant, Employees Covered by Collective-Bargaining Arrangement to All Entity's Employees, Percentage |  |  | 41.00% |
Multiemployer Plan, Pension, Significant, Employees Covered by Collective-Bargaining Arrangement to All Participants, Percentage |  |  | 36.00% |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Three Customers [Member] |  |  |  |
Concentration Risk, Percentage |  |  | 31.00% |
Number of Major Customers |  |  | 3 |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer ADI [Member] |  |  |  |
Concentration Risk, Percentage |  |  | 16.00% |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer Subcom [Member] |  |  |  |
Concentration Risk, Percentage |  |  | 15.00% | 12.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Customers [Member] |  |  |  |
Concentration Risk, Percentage |  |  |  | 37.00%
Number of Major Customers |  |  |  | 2
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer Sisamex [Member] |  |  |  |
Concentration Risk, Percentage |  |  |  | 14.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer Detroit Diesel [Member] |  |  |  |
Concentration Risk, Percentage |  |  |  | 11.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer Subcom [Member] |  |  |  |
Concentration Risk, Percentage |  |  | 11.00% |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer Detroit Diesel [Member] |  |  |  |
Concentration Risk, Percentage |  |  | 13.00% | 11.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Northrop Grumman [Member] |  |  |  |
Concentration Risk, Percentage |  |  | 23.00% | 23.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer Sistemas [Member] |  |  |  |
Concentration Risk, Percentage |  |  |  | 21.00%

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