Shareholders' Equity (Deficit): Additional Information (Details) - Stock options - USD ($)	3 Months Ended
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

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost to be recognized for option under share-based payment arrangement.

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