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Note 1 - Organization and Accounting Policies (Details Textual) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Furniture and Fixtures [Member] | Minimum [Member] |  |
Property, Plant and Equipment, Useful Life | 3 years |
Furniture and Fixtures [Member] | Maximum [Member] |  |
Property, Plant and Equipment, Useful Life | 15 years |
Land, Buildings and Improvements [Member] |  |
Property, Plant and Equipment, Useful Life | 40 years |
Machinery and Equipment [Member] | Minimum [Member] |  |
Property, Plant and Equipment, Useful Life | 3 years |
Machinery and Equipment [Member] | Maximum [Member] |  |
Property, Plant and Equipment, Useful Life | 15 years |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer Sistemas [Member] |  |
Concentration Risk, Percentage | 16.00% |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer Meritor [Member] |  |
Concentration Risk, Percentage | 11.00% | 22.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer ITT Exelis [Member] |  |
Concentration Risk, Percentage | 10.00% |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer Dana [Member] |  |
Concentration Risk, Percentage |  | 57.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |
Concentration Risk, Percentage | 37.00% | 79.00%
Number of Major Customers | 3 | 2
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer Sistemas [Member] |  |
Concentration Risk, Percentage | 11.00% |
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer Meritor [Member] |  |
Concentration Risk, Percentage | 30.00% | 16.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer Dana [Member] |  |
Concentration Risk, Percentage |  | 59.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer Detroit Diesel [Member] |  |
Concentration Risk, Percentage | 10.00% |
Sales Revenue, Net [Member] | Government Contracts Concentration Risk [Member] |  |
Concentration Risk, Percentage | 5.00% | 2.00%
Workforce Subject to Collective Bargaining Arrangements Expiring within One Year [Member] |  |
Multi Employer Plans Collective Bargaining Arrangement Number of Participants | 35 |
Employee Benefit Related Adjustments Mexico [Member] |  |
Multi Employer Plans Collective Bargaining Arrangement Number of Participants | 191 |
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Participants | 26.00% |
Software Development Costs, Useful Life | 1 year 180 days |
Capitalized Computer Software, Net | $ 1,597,000 | $ 1,883,000
Capitalized Computer Software, Amortization | 2,090,000 | 372,000
Revenue Recognition, Milestone Method, Revenue Recognized | 300,000 | 3,050,000
Product Warranty Accrual | 830,000 | 825,000
Product Warranty Expense | 159,000 | 43,000
Extended Product Warranty Accrual, Warranties Issued | 495,000 | 839,000
Extended Product Warranty Accrual | 333,000 | 344,000
Other Liabilities | $ 162,000 | $ 495,000
Multi Employer Plans Collective Bargaining Arrangement Number of Participants | 374 |
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Participants | 51.00% |

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