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Stockholders' Equity (Details 2) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 29, 2017 | Dec. 30, 2016 | Jan. 01, 2016
Schedule Of Employee Service Share based Compensations [Line Items] |  |  |
Total stock-based compensation expense | $ 3,161 | $ 8,558 | $ 3,304
Amounts capitalized as part of inventory | 372 | 269 | 516
Total stock-based compensation | 3,533 | 8,827 | 3,820
Cost of Sales [Member] |  |  |
Schedule Of Employee Service Share based Compensations [Line Items] |  |  |
Total stock-based compensation expense | 8 | 612 | 52
General and Administrative Expense [Member] |  |  |
Schedule Of Employee Service Share based Compensations [Line Items] |  |  |
Total stock-based compensation expense | 1,487 | 3,809 | 2,090
Marketing and selling [Member] |  |  |
Schedule Of Employee Service Share based Compensations [Line Items] |  |  |
Total stock-based compensation expense | 805 | 1,961 | 696
Research and Development Expense [Member] |  |  |
Schedule Of Employee Service Share based Compensations [Line Items] |  |  |
Total stock-based compensation expense | $ 861 | $ 2,176 | $ 466

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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=96867065&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=96867065&loc=d3e5070-113901 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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