Revenue Recognition: Franchising - Contract Liabilities (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Apr. 01, 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	486,000	380,500
Fees earned that were included in the balance at the beginning of the period	(473,300)	(433,400)
Balance at end of period	$ 10,322,900	$ 10,355,600