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Significant Accounting Policies: Balance Sheet Disclosures (Details) - USD ($)	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Receivables
Allowance for Doubtful Accounts Receivable, Current	$ 800	$ 1,900
Restricted Cash
Restricted cash held in escrow	$ 25,000	50,000	$ 80,000
Allowance for Credit Losses
Delinquent period for charging-off against allowance for credit losses	121 days
Canadian operations
Cash Equivalents
Cash located in banks	$ 77,100	$ 56,500

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Amount of allowance for credit loss on accounts receivable, classified as current.

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