Leases - Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Leases [Abstract]
Finance lease cost: Amortization of right-of-use assets	$ 890
Finance lease cost: Interest on lease liabilities	51
Operating lease cost	24,246
Short-term lease cost	2,057
Variable lease cost	3,665
Total lease cost	30,909
Operating cash flows from finance leases	51
Operating cash flows from operating leases	22,597
Financing cash flows from finance leases	1,255	$ 0	$ 0
Right-of-use assets obtained in exchange for new finance lease liabilities	2,240
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 12,655
Weighted-average remaining lease term – finance leases (in years)	2 years 9 months 3 days
Weighted-average remaining lease term – operating leases (in years)	10 years 7 months 6 days
Weighted-average discount rate – finance leases (percentage)	2.06%
Weighted-average discount rate – operating leases (percentage)	5.86%