Commitments and Contingencies - Additional Information (Detail)	6 Months Ended
	Jun. 29, 2016 USD ($) Lawsuit Lease Agreement
Other Commitments [Line Items]
Date of class action filed in court	On or about February 24, 2014
Number of lawsuits consolidated | Lawsuit	2
Call option value reduced from menu	$ 5
Officers [Member]
Other Commitments [Line Items]
Number of at-will employment agreements | Agreement	4
Property Lease Guarantee [Member]
Other Commitments [Line Items]
Number of leases assigned to franchisees | Lease	5
Latest lease expiration year	2036
Contingent lease obligations, maximum exposure	$ 3,400,000
Contingent lease obligations, maximum exposure, if discounted at estimated pre-tax cost of debt	2,900,000
Beverage [Member]
Other Commitments [Line Items]
Purchase commitments, estimated obligations	11,500,000
Chicken Acquisition Corp [Member]
Other Commitments [Line Items]
Purchase commitments, estimated obligations	$ 21,600,000