Leases Other Lease Information (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 28, 2019 USD ($)	Sep. 28, 2019 USD ($)
Leases [Abstract]
Operating cash flows from operating leases	$ 6,605	$ 18,905
Additions to ROU assets obtained from new operating lease liabilities	$ 10,001	$ 23,993
Weighted-average remaining lease terms leases - Operating	6 years 2 months 12 days	6 years 2 months 12 days
Weighted-average discount rate - Operating	3.40%	3.40%