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Stock-Based Compensation (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Oct. 02, 2015	Sep. 30, 2016	Oct. 02, 2015
Schedule of Employee Service Share-based Compensation [Line Items]
Allocated Share-based Compensation Expense	$ 386	$ 923	$ 8,143	$ 2,747
Amounts capitalized as part of inventory	39	130	227	258
Total	425	1,053	8,370	3,005
Cost of Sales [Member]
Schedule of Employee Service Share-based Compensation [Line Items]
Allocated Share-based Compensation Expense	0	9	560	33
General and administrative [Member]
Schedule of Employee Service Share-based Compensation [Line Items]
Allocated Share-based Compensation Expense	248	543	3,936	1,667
Marketing and selling [Member]
Schedule of Employee Service Share-based Compensation [Line Items]
Allocated Share-based Compensation Expense	72	184	1,544	539
Research and development [Member]
Schedule of Employee Service Share-based Compensation [Line Items]
Allocated Share-based Compensation Expense	$ 66	$ 187	$ 2,103	$ 508

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- Definition

Line items represent the schedule of employee service share-based compensation.

+ References

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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Amount of capitalized and expensed compensation cost from equity-based compensation arrangements.

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