Commitments and Contingencies - Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017	Jan. 01, 2017	Dec. 30, 2012	Dec. 28, 2014
Rent Expense
Minimum rentals	$ 97,598	$ 96,927	$ 96,953
Contingent rentals	43	156	217
Total Rent Expense	97,641	97,083	$ 97,170
Capital Leases, Future Minimum Payments Due
2015	2,182
2016	2,214
2017	2,201
2018	2,184
2019	1,956
Thereafter	13,266
Future minimum lease payments	24,003
Less amounts representing interest	(10,996)
Present value of future minimum lease payments	13,007
Less current portion	(677)	(596)
Capital lease obligations, net of current portion	12,330	$ 13,010
Operating Leases, Future Minimum Payments Due
2015	92,435
2016	90,983
2017	88,914
2018	87,183
2019	84,806
Thereafter	457,277
Future minimum lease payments	901,598
General and Administrative Expense [Member]
Rent Expense
Total Rent Expense	$ 1,200			$ 1,000
Minimum [Member]
Operating Leased Assets [Line Items]
Lease Expiration Date	Dec. 31, 2037
Lease terms	10 years
Capital Leases, Future Minimum Payments Due
Capital lease interest rate (percent)					2.99%
Maximum [Member]
Operating Leased Assets [Line Items]
Lease Expiration Date	Dec. 31, 2054
Lease terms	20 years
Capital Leases, Future Minimum Payments Due
Capital lease interest rate (percent)					99.09%