Restructuring and Related Costs - Restructuring and Other Related Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs	$ 6,738
Cost of Revenue
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs	1,158	$ 21,466
Operating Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs	5,580	17,188
Severance and related expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs	3,732
Severance and related expenses | Cost of Revenue
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs	1,102	20,698
Severance and related expenses | Operating Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs	2,630	5,850
Lease related impairment charges | Cost of Revenue
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs	44
Lease related impairment charges | Operating Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs	2,945
Accelerated amortization of lease assets due to cease use
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs	2,989
Accelerated amortization of lease assets due to cease use | Cost of Revenue
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs		0
Accelerated amortization of lease assets due to cease use | Operating Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs		11,338
Asset impairment
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs	17
Asset impairment | Cost of Revenue
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs	12	768
Asset impairment | Operating Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring and other related costs	$ 5	$ 0