Restaurant Impairment, Closure Costs and Asset Disposals Restaurant Impairment, Closure Costs and Asset Disposals (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Oct. 02, 2018 USD ($) restaurant	Oct. 03, 2017 USD ($) restaurant	Apr. 04, 2017 restaurant	Oct. 02, 2018 USD ($) restaurant	Oct. 03, 2017 USD ($) restaurant
Property, Plant and Equipment Impairment or Disposal [Abstract]
Restaurant impairments	$ 314	$ 9,080		$ 1,231	$ 15,053
Closure costs	1,488	779		3,561	19,194
Loss on disposal of assets and other	10	(404)		(1,160)	(900)
Asset Disposals, Closure Costs and Restaurant Impairments	1,792	$ 10,263		5,952	35,147
Gain on insurance proceeds received for property damage	$ 400			$ (373)	$ 0
Number of restaurants impaired during the comparable periods | restaurant	0	18		1	31
Impairment closure costs and other	$ 1,500	$ 800		$ 3,600	$ 19,200
Gain recognized related to closures primarily due to adjustments to the liabilities to landlords					$ 3,600
Number of restaurants closed | restaurant	3	27	55	12