Leases Lessee, Lease Costs (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 29, 2020	Mar. 31, 2019
Schedule of Lease Costs [Line Items]
Lease costs, net		$ 45,713	$ 45,135
Operating lease, lease income		200	700
Other restaurant operating [Member]
Schedule of Lease Costs [Line Items]
Operating leases	[1]	45,882	45,233
Variable lease cost		1,120	819
Depreciation and amortization [Member]
Schedule of Lease Costs [Line Items]
Amortization of leased assets		342	324
Interest expense [Member]
Schedule of Lease Costs [Line Items]
Interest on lease liabilities		46	73
Franchise and other revenues [Member]
Schedule of Lease Costs [Line Items]
Sublease revenue	[2]	(1,677)	(1,314)
General and administrative expense [Member]
Schedule of Lease Costs [Line Items]
Operating leases		3,600	3,600
Cost of sales [Member]
Schedule of Lease Costs [Line Items]
Operating leases		$ 300	$ 300

[1] Excludes rent expense for office facilities and Company-owned closed or subleased properties for the thirteen weeks ended March 29, 2020 and March 31, 2019 of $3.6 million, which is included in General and administrative expense and certain supply chain related rent expense of $0.3 million, which is included in Cost of sales.

[2] Excludes rental income from Company-owned properties for the thirteen weeks ended March 29, 2020 and March 31, 2019 of $0.2 million and $0.7 million, respectively.