Significant Accounting Policies: Balance Sheet Disclosures (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) item	Dec. 26, 2015 USD ($)	Dec. 27, 2014 USD ($)	Dec. 28, 2013 USD ($)
Receivables
Allowance for Doubtful Accounts Receivable, Current	$ 2,100	$ 200	$ 1,600	$ 4,300
Restricted Cash
Restricted cash held in escrow	$ 40,000	25,000
Leasing Income Recognition
Threshold delinquent period of lease rentals to classify lease as non-accrual	90 days
Minimum monthly payments owed to classify lease as non-accrual | item	3
Allowance for Credit Losses
Delinquent period for charging-off against allowance for credit losses	121 days
Canadian operations
Cash Equivalents
Cash located in banks	$ 149,700	$ 99,100