Impairment of Long-Lived Assets Impairment of Long-Lived Assets Held and Used (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014 Properties and Other Intangible Assets, Operating Restaurants [Member]	Sep. 28, 2014 Properties and Other Intangible Assets, Operating Restaurants [Member]	Dec. 29, 2013 Properties and Other Intangible Assets, Operating Restaurants [Member]	Sep. 28, 2014 Properties and Other Intangible Assets [Member]	Sep. 29, 2013 Properties and Other Intangible Assets [Member]	Sep. 28, 2014 Properties and Other Intangible Assets [Member]	Sep. 29, 2013 Properties and Other Intangible Assets [Member]	Sep. 28, 2014 Properties and Other Intangible Assets, Franchisee Leased / Subleased Assets [Member]	Sep. 28, 2014 Properties and Other Intangible Assets, Franchisee Leased / Subleased Assets [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of long-lived assets	$ 3,408	$ 5,327	$ 3,740	$ 5,327	$ 2,027	$ 2,027	$ 9,094	$ 3,408	$ 500	$ 3,740	$ 500	$ 250	$ 250