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Schedule of Stock-based Compensation Expense (Details) - USD ($) | 12 Months Ended
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Dec. 26, 2020 | Dec. 28, 2019 | Dec. 29, 2018
Share-based Payment Arrangement, Expense | $ 821,122 | $ 2,057,400 | $ 4,791,054
Cost of Product Revenues [Member] |  |  |
Share-based Payment Arrangement, Expense | 113,517 | 102,629 | 418,605
Research and Development [Member] |  |  |
Share-based Payment Arrangement, Expense | 204,599 | 295,872 | 725,112
Selling, General and Administrative [Member] |  |  |
Share-based Payment Arrangement, Expense | $ 503,006 | $ 1,658,899 | $ 3,647,337

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