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Stockholders' Equity and Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 29, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
NonVested Restricted Common Stock |
| Shares |  | Weighted Average Grant Fair Value
Outstanding at December 26, 2015 | 2,192,016 |  |  | $ | 3.82 |
Granted | 1,663,000 |  |  | 2.40 |
Forfeited | (110,500 | ) |  | 3.21 |
Vested | (736,842 | ) |  | 3.17 |
Outstanding at December 31, 2016 | 3,007,674 |  |  | 3.21 |
Granted | 1,152,000 |  |  | 3.40 |
Forfeited | (465,150 | ) |  | 3.82 |
Vested | (1,065,250 | ) |  | 2.90 |
Balance at December 30, 2017 | 2,629,274 |  |  | 3.31 |
Granted | 1,549,000 |  |  | 2.25 |
Forfeited | (872,025 | ) |  | 3.78 |
Vested | (1,093,000 | ) |  | 3.05 |
Balance at December 29, 2018 | 2,213,249 |  |  | $ | 2.51 |
Stock-Based Compensation Expense | for the fiscal years 2018, 2017 and 2016 (no tax benefits were recognized):
| 2018 |  | 2017 |  | 2016
Cost of product revenues | $ | 418,605 |  |  | $ | 490,481 |  |  | $ | 561,791 |
Research and development | 725,112 |  |  | 799,485 |  |  | 527,081 |
Selling, general and administrative | 3,647,337 |  |  | 1,006,165 |  |  | 1,336,454 |
Total | $ | 4,791,054 |  |  | $ | 2,296,131 |  |  | $ | 2,425,326 |

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