Restructuring Charges - Summary (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 27, 2020	Jun. 28, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019
Restructuring Cost and Reserve [Line Items]
Total Amount Expected to be Incurred	$ 15,388			$ 15,388
Incurred in the Three-months Ended September 27, 2020	251	$ 14,798	$ 0	15,049	$ 0
One-time termination benefits
Restructuring Cost and Reserve [Line Items]
Total Amount Expected to be Incurred	10,503			10,503
Incurred in the Three-months Ended September 27, 2020	(36)			10,350
Contract termination costs
Restructuring Cost and Reserve [Line Items]
Total Amount Expected to be Incurred	4,099			4,099
Incurred in the Three-months Ended September 27, 2020	104			4,099
Other associated costs
Restructuring Cost and Reserve [Line Items]
Total Amount Expected to be Incurred	786			786
Incurred in the Three-months Ended September 27, 2020	$ 183			$ 600