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Stock-Based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 01, 2016 | Jul. 03, 2015 | Jul. 01, 2016 | Jul. 03, 2015 | Feb. 11, 2016 | Jan. 01, 2016
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding | 3,785,000 |  | 3,785,000 |  |  | 3,623,000
Estimated Forfeiture Rate |  |  | 9.00% |  |  |
Allocated Share-based Compensation Expense | $ 300 | $ 829 | $ 7,758 | $ 1,823 |  |
Beneficial Ownership Percentage of Investor |  |  |  |  | 26.00% |
General and Administrative Expense [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense | 167 | 548 | 3,688 | 1,124 |  |
Selling and Marketing Expense [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense | 68 | 104 | 1,471 | 355 |  |
Research and Development Expense [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense | 65 | 171 | 2,039 | 321 |  |
Cost of Sales [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense | $ 0 | $ 6 | $ 560 | $ 23 |  |
Maximum [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Beginning Balance | $ 17.62 |  | $ 17.62 |  |  |
Minimum [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Beginning Balance | $ 0.95 |  | $ 0.95 |  |  |
Restricted Stock [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding | 15,379 |  | 15,379 |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding | 260,425 |  | 260,425 |  |  |
Omnibus Plan [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |  |  | 10 years |  |  |
Omnibus Plan [Member] | Restricted Stock [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 2,223,858 |  | 2,223,858 |  |  |
Omnibus Equity Incentive Plan 2003 [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  | $ 6,900 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost |  |  | 3,700 |  |  |
Omnibus Equity Incentive Plan 2003 [Member] | General and Administrative Expense [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  | 2,900 |  |  |
Omnibus Equity Incentive Plan 2003 [Member] | Selling and Marketing Expense [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  | 1,500 |  |  |
Omnibus Equity Incentive Plan 2003 [Member] | Research and Development Expense [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  | 1,900 |  |  |
Omnibus Equity Incentive Plan 2003 [Member] | Cost of Sales [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  | 600 |  |  |
Omnibus Equity Incentive Plan 2003 [Member] | Employee Stock Option [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  | 4,600 |  |  |
Omnibus Equity Incentive Plan 2003 [Member] | Restricted Stock And Restricted Stock Units [Member] |  |  |  |  |  |
Schedule of Employee Service Share-based Compensation [Line Items] |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  | $ 2,300 |  |  |

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