Guarantees and Other Commitments and Contingencies Image Activation Incentives (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2014	Dec. 29, 2013
Franchisee Incentives [Line Items]
Letters of Credit Outstanding, Amount	$ 17,060
Standby Letters of Credit [Member]
Franchisee Incentives [Line Items]
Letters of Credit Outstanding, Amount	6,000
Minimum [Member]
Franchisee Incentives [Line Items]
Years of reduction in royalty payment attributable to incentive program	1 year
Maximum [Member]
Franchisee Incentives [Line Items]
Years of reduction in royalty payment attributable to incentive program	2 years
General and Administrative Expense [Member]
Franchisee Incentives [Line Items]
Franchisee Incentive Program, Cost	$ 4,369	$ 9,178