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

No definition available.

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- Definition

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

Amount of 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
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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
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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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-SubTopic 10
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-Paragraph 21
-Subparagraph (a)
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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
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-Paragraph 12
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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=65877416&loc=SL14450657-114947

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

No definition available.

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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
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)(1)
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-Name Accounting Standards Codification
-Topic 942
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-Paragraph 1
-Subparagraph (SX 210.9-03.15(5))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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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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Note 1 - Organization and Significant Accounting Policies (Details Textual)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Number of Operating Segments		2
Software Development Costs, Useful Life			1 year 180 days
Capitalized Computer Software, Amortization			$ 1,089,000
Standard and Extended Product Warranty Accrual		$ 666,000	$ 856,000
Multi Employer Plans Collective Bargaining Arrangement Number of Participants		349
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Participants		57.00%
Collective Bargaining Agreements That Expire in Next 12 Months [Member]
Multi Employer Plans Collective Bargaining Arrangement Number of Participants		0
Employee Benefit Related Adjustments Mexico [Member]
Multi Employer Plans Collective Bargaining Arrangement Number of Participants		308
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Participants		51.00%
Accounts Receivable [Member] \| Customer Concentration Risk [Member]
Concentration Risk, Percentage		30.00%	41.00%
Number of Major Customers		2	3
Accounts Receivable [Member] \| Customer Concentration Risk [Member] \| Customer Sistemas [Member]
Concentration Risk, Percentage		15.00%	15.00%
Accounts Receivable [Member] \| Customer Concentration Risk [Member] \| Northrop Grumman [Member]
Concentration Risk, Percentage		15.00%
Accounts Receivable [Member] \| Customer Concentration Risk [Member] \| Customer Meritor [Member]
Concentration Risk, Percentage			14.00%
Accounts Receivable [Member] \| Customer Concentration Risk [Member] \| Customer Tyco [Member]
Concentration Risk, Percentage			12.00%
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Customer Sistemas [Member]
Concentration Risk, Percentage		13.00%	12.00%
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Customer Meritor [Member]
Concentration Risk, Percentage		14.00%	19.00%
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Customer Detroit Diesel [Member]
Concentration Risk, Percentage		13.00%	10.00%
Sales Revenue, Net [Member] \| Government Contracts Concentration Risk [Member]
Concentration Risk, Percentage			3.00%
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Land, Buildings and Improvements [Member]
Property, Plant and Equipment, Useful Life		40 years
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
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