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%

Represents number of participants in multi employer plans collective bargaining arrangement.

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Represents number of Major Customers.

+ References

No definition available.

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- Definition

Useful life of software development used in the normal conduct of business.

+ References

No definition available.

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- Definition

For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128487-111756

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- Definition

The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-SubTopic 10
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- Definition

Amount as of the balance sheet date of the aggregate extended product warranty liability. Does not include the ending balance for the standard product warranty liability.

+ References

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- Definition

Represents the aggregate increase in the liability for accruals related to extended product warranties issued during the reporting period. Does not include any increase in the liability for accruals related to standard product warranties.

+ References

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- Definition

Percentage of employee participants subject to a collective bargaining arrangement to all participants in a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 5
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=49170332&loc=SL14450657-114947

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- Definition

The aggregate carrying amount, as of the balance sheet date, of liabilities not separately disclosed in the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.15)
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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
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-Paragraph 8
-Subparagraph ((c)(5))
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-Subparagraph (SX 210.9-03.15(5))
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- Definition

The expense charged against earnings for the period pertaining to standard and extended warranties on the entity's goods and services granted to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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- Definition

The amount of consideration recognized during the period for the milestone or milestones.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 28
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-Paragraph 2
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