Restaurant Impairment, Closure Costs and Asset Disposals Restaurant Impairment, Closure Costs and Asset Disposals (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Oct. 03, 2017 USD ($) restaurant	Apr. 04, 2017 restaurant	Sep. 27, 2016 USD ($)	Oct. 03, 2017 USD ($) restaurant	Sep. 27, 2016 USD ($) restaurant
Property, Plant and Equipment Impairment or Disposal [Abstract]
Restaurant impairments	$ 9,080		$ 79	$ 15,053	$ 10,620
Closure costs	779		642	19,194	1,729
Loss on disposal of assets and other	404		1,562	900	2,198
Asset Disposals, Closure Costs and Restaurant Impairments	$ 10,263		2,283	$ 35,147	14,547
Charge to reduce capitalized labor and overhead			1,100		1,100
Gain from insurance proceeds			400		$ 400
Number of restaurants impaired during the comparable periods | restaurant	18			31	12
Number of restaurants closed | restaurant		55
Impairment closure costs and other	$ 800		$ 600	$ 19,200	$ 1,700
Gain due to adjustments to liabilities				$ 3,600
Number of restaurant leases terminated with landlords | restaurant				27