System Optimization Losses (Gains), Net Assets Held for Sale (Details) $ in Thousands		Sep. 27, 2015 USD ($) stores	Dec. 28, 2014 USD ($) stores	[1]
Long Lived Assets Held-for-sale [Line Items]
Number of Restaurants Classified as Assets Held for Sale | stores		274	106
Restaurant assets held for sale [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale		$ 103,561	$ 25,266
Other assets held for sale [Member]
Long Lived Assets Held-for-sale [Line Items]
Assets held for sale	[2]	$ 5,144	$ 13,469

[1] Reclassifications have been made to the prior year presentation to include restaurants previously excluded from our system optimization initiative to conform to the current year presentation. See Note 1 for further details.

[2] Net restaurant assets held for sale include company-owned restaurants and consist primarily of cash, inventory, equipment and an estimate of allocable goodwill. Other assets held for sale primarily consist of surplus properties. Assets held for sale are included in “Prepaid expenses and other current assets.”