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Shareholders' Equity (Deficit): Additional Information (Details) - Stock options - USD ($) | 3 Months Ended
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Mar. 26, 2022 | Mar. 27, 2021
Additional disclosures |  |
Compensation expense | $ 421,600 | $ 385,200
Total unrecognized compensation expense | $ 3,600,000 |
Weighted average period for recognition of unrecognized compensation expense | 2 years 7 months 6 days |

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