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Revenue Recognition: Franchising - Commission Fees (Details) - Commission Fees - USD ($)
3 Months Ended 9 Months Ended
Sep. 29, 2018
Sep. 30, 2017
Sep. 29, 2018
Sep. 30, 2017
Dec. 30, 2017
Commission Fees          
Capitalized contract costs $ 500,000   $ 500,000   $ 400,000
Expense $ 24,800 $ 24,800 $ 73,200 $ 74,700