Leases - Future Minimum Lease Payments, Lessor Operating Leases, and Lease Guarantees (Details) $ in Thousands	Sep. 29, 2019 USD ($) lease restaurant	Dec. 30, 2018 USD ($)
Finance Lease Costs
Remainder of 2019	$ 579
2020	2,315
2021	2,315
2022	2,315
2023	2,315
Thereafter	1,605
Total future minimum lease payments	11,444
Less imputed interest	(1,613)
Total present value of Lease Liabilities	9,831
Operating Lease Costs
2019	7,027	$ 40,834
2020	35,946	36,631
2021	31,420	31,159
2022	26,005	25,188
2023	20,345	18,694
Thereafter	72,167	57,304
Total future minimum lease payments	192,910	209,810
Less imputed interest	(45,469)
Less lease liabilities held for sale	(2,420)
Total present value of Lease Liabilities	145,021
Expected Sublease Income:
Remainder of 2019	2,195
2019		8,079
2020	8,772	8,061
2021	8,419	7,818
2022	8,073	7,462
2023	7,782	7,182
Thereafter	47,687	42,518
Total future minimum lease payments	$ 82,928	$ 81,120
Number of domestic leases for which the Company is contingently liable | lease	103
Estimated maximum amount of undiscounted payments in the event of nonpayment by primary lessees	$ 14,800
United Kingdom franchise-owned restaurants
Expected Sublease Income:
Number of units leased and subleased | restaurant	370
Initial lease terms on franchised sites	15 years