Leases Other Lease Information (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 29, 2019 USD ($)	Jun. 29, 2019 USD ($)
Leases [Abstract]
Operating cash flows from operating leases	$ 6,238	$ 12,300
Weighted-average remaining lease terms - operating leases	5 years 6 months	5 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent	3.40%	3.40%