Segment Reporting: (Details) (USD $)	3 Months Ended
	Mar. 28, 2015 item	Mar. 29, 2014	Dec. 27, 2014
Segment Reporting
Number of reportable business segments	2
Total revenue	$ 21,024,100	$ 14,552,600
Total operating income	9,974,100	7,434,500
Total depreciation	107,600	105,300
Total identifiable assets	49,073,800		54,727,800
Operating | Franchising
Segment Reporting
Total revenue	11,014,500	10,177,000
Total operating income	5,636,800	4,701,200
Total depreciation	85,300	83,100
Total identifiable assets	3,601,800		3,258,300
Operating | Leasing
Segment Reporting
Total revenue	10,009,600	4,375,600
Total operating income	4,337,300	2,733,300
Total depreciation	22,300	22,200
Total identifiable assets	43,788,700		44,870,800
Unallocated
Segment Reporting
Total identifiable assets	$ 1,683,300		$ 6,598,700