Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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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
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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-Section 50
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-Paragraph 21
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- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

+ References

No definition available.

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- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 35
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68071081&loc=d3e1205-110223

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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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Description of Business and Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jan. 01, 2017
Significant Accounting Policies [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					$ 97
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount	$ 100
Leasehold Improvements [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Estimated Useful Lives		Shorter of asset life or term of lease
Building Improvements [Member] \| Maximum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life		40 years
Building Improvements [Member] \| Minimum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life		5 years
Machinery, Equipment, and Furniture and Fixtures [Member] \| Maximum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life		10 years
Machinery, Equipment, and Furniture and Fixtures [Member] \| Minimum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life		3 years
Retained Earnings
Significant Accounting Policies [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					(137)
Accounting Standards Update 2016-09 \| Retained Earnings
Significant Accounting Policies [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption					$ 100
Accounting Standards Update 2014-09 [Member] \| Retained Earnings \| Maximum [Member]
Significant Accounting Policies [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption		$ 600
Accounting Standards Update 2014-09 [Member] \| Retained Earnings \| Minimum [Member]
Significant Accounting Policies [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption		$ 300
Sales Revenue, Net [Member] \| Automotive Industry [Member]
Significant Accounting Policies [Line Items]
Concentration Risk, Percentage		22.00%	22.00%	19.00%
Sales Revenue, Net [Member] \| Automotive Industry [Member] \| Single Automotive Customer [Member]
Significant Accounting Policies [Line Items]
Concentration Risk, Percentage		13.00%	13.00%