Restructuring Charges - Restructuring Activities (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jul. 05, 2020	Dec. 29, 2019	Jun. 30, 2019	Jul. 05, 2020	Jun. 30, 2019
Restructuring Reserve [Roll Forward]
2020	$ 157		$ 0	$ 1,275	$ 0
2018 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Balance at Beginning of Year				2,672
2020				(1,385)
2020				(922)
Balance at September 29, 2019	365	$ 2,672		365
2018 Restructuring Plan [Member] | Workforce Reduction
Restructuring Reserve [Roll Forward]
Balance at Beginning of Year				1,898
2020				(1,385)
2020				(223)
Balance at September 29, 2019	290	1,898		290
2018 Restructuring Plan [Member] | Other Exit Costs
Restructuring Reserve [Roll Forward]
Balance at Beginning of Year				774
2020				0
2020				(699)
Balance at September 29, 2019	75	774		75
2019 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Balance at Beginning of Year				8,773
2020				(1,996)
2020		(9,000)		(353)
Balance at September 29, 2019	6,424	8,773		6,424
2019 Restructuring Plan [Member] | Workforce Reduction
Restructuring Reserve [Roll Forward]
Balance at Beginning of Year				8,634
2020				(1,996)
2020				(353)
Balance at September 29, 2019	6,285	8,634		6,285
2019 Restructuring Plan [Member] | Other Exit Costs
Restructuring Reserve [Roll Forward]
Balance at Beginning of Year				139
2020				0
2020				0
Balance at September 29, 2019	$ 139	$ 139		$ 139