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Stock-Based Compensation (Details 1) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2016 | Jul. 03, 2015 | Jul. 01, 2016 | Jul. 03, 2015
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |
Allocated Share-based Compensation Expense | $ 300 | $ 829 | $ 7,758 | $ 1,823
Amounts capitalized as part of inventory | 36 | 129 | 188 | 251
Total | 336 | 958 | 7,946 | 2,074
Cost of Sales [Member] |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |
Allocated Share-based Compensation Expense | 0 | 6 | 560 | 23
General and administrative [Member] |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |
Allocated Share-based Compensation Expense | 167 | 548 | 3,688 | 1,124
Marketing and selling [Member] |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |
Allocated Share-based Compensation Expense | 68 | 104 | 1,471 | 355
Research and development [Member] |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |
Allocated Share-based Compensation Expense | $ 65 | $ 171 | $ 2,039 | $ 321

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- Definition 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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