Revenue Recognition: Franchising - Contract Liabilities (Details) - USD ($)	9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017
Revenue Recognition: Franchising
Balance at beginning of period	$ 10,310,200	$ 10,408,500
Franchise and software license fees collected from franchisees, excluding amount earned as revenue during the period	1,354,500	1,295,600
Fees earned that were included in the balance at the beginning of the period	(1,390,200)	(1,394,300)
Balance at end of period	$ 10,274,500	$ 10,309,800