Description of Business and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	2 Months Ended	3 Months Ended	1 Months Ended
	Mar. 30, 2014	Feb. 14, 2014	Mar. 29, 2015	Aug. 31, 2014	Dec. 28, 2014 Country State
Accounting Policies [Abstract]
Number of States in which Entity Operates					47
Number of foreign countries in which Entity operates					11
Related Party Transaction [Line Items]
Contributions from franchisees to advertising and media funds	$ 0.4	$ 0.4	$ 0.6
Variable Interest Entity, Primary Beneficiary [Member]
Related Party Transaction [Line Items]
Gross proceeds				$ 12.1