Leases Components of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Finance Lease, Cost
Amortization of finance lease assets	$ 3,471	$ 3,201	$ 9,995	$ 7,949
Interest on finance lease liabilities	10,244	10,116	30,462	26,808
Total finance lease cost	13,715	13,317	40,457	34,757
Lease, Cost
Operating lease cost	23,170	23,358	68,304	67,087
Variable lease cost	15,548	15,435	43,766	44,910
Short-term lease cost	1,006	1,141	3,327	3,420
Total operating lease cost	39,724	39,934	115,397	115,417
Total lease cost	53,439	53,251	155,854	150,174
Franchise rental expense
Lease, Cost
Total operating lease cost	32,421	32,342	92,975	92,815
Cost of sales
Lease, Cost
Total operating lease cost	6,651	6,892	20,315	20,492
Executory costs paid by lessee
Lease, Cost
Variable lease cost	$ 9,326	$ 9,908	$ 28,526	$ 29,211

Amount of interest expense on finance lease liability.

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Amount of amortization expense attributable to right-of-use asset from finance lease.

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Amount of lease cost recognized by lessee for lease contract.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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Total cost of finance leases including amortization of finance lease assets and interest incurred on finance lease liabilities.

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Total cost of operating leases including operating lease cost, variable lease cost and short-term lease cost.

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