Stockholders’ Equity - Summary of Stock-based Compensation in Accompanying Consolidated Statements (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Apr. 01, 2017 |
Mar. 26, 2016 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Stock-based compensation | $ 1,603 | $ 1,373 |
| Cost of revenue | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Stock-based compensation | 92 | 75 |
| Selling and marketing | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Stock-based compensation | 246 | 185 |
| Research and development | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Stock-based compensation | 281 | 230 |
| General and administrative | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Stock-based compensation | 984 | 878 |
| Income from discontinued operations | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Stock-based compensation | $ 0 | $ 5 |