Goodwill (Details)	3 Months Ended		9 Months Ended
	Sep. 27, 2015 USD ($)	Sep. 28, 2014 USD ($)	Sep. 27, 2015 USD ($)	Dec. 28, 2014 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Impairment Loss	$ 0	$ 0	$ 0
Goodwill	18,384,000		$ 18,384,000	$ 17,793,000
Goodwill, Acquired During Period	$ 591,000
Number of Restaurants Acquired			9