Restructuring - Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 29, 2020	Mar. 31, 2019
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	$ 6,601
Charges (Benefits)	1,576	$ (665)
(Payments) Recoveries	(1,473)
Restructuring reserve, end	6,704
December 2019 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	5,822
Charges (Benefits)	1,639	0
(Payments) Recoveries	(1,432)
Restructuring reserve, end	6,029
February 2018 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	296
Charges (Benefits)	2	(576)
(Payments) Recoveries	(34)
Restructuring reserve, end	264
Legacy Restructuring Plans
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	483
Charges (Benefits)	(65)	(89)
(Payments) Recoveries	(7)
Restructuring reserve, end	411
Non-cash impairment charges \| February 2018 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	0
Charges (Benefits)	0	0
(Payments) Recoveries	0
Restructuring reserve, end	0
Non-cash impairment charges \| Legacy Restructuring Plans
Restructuring Reserve [Roll Forward]
Charges (Benefits)	0	0
Severance and benefits \| December 2019 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	5,822
Charges (Benefits)	1,639	0
(Payments) Recoveries	(1,432)
Restructuring reserve, end	6,029
Severance and benefits \| February 2018 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	296
Charges (Benefits)	0	(349)
(Payments) Recoveries	(32)
Restructuring reserve, end	264
Severance and benefits \| Legacy Restructuring Plans
Restructuring Reserve [Roll Forward]
Charges (Benefits)	(65)	(17)
Lease and related termination costs \| February 2018 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	0
Charges (Benefits)	0	0
(Payments) Recoveries	0
Restructuring reserve, end	0
Lease and related termination costs \| Legacy Restructuring Plans
Restructuring Reserve [Roll Forward]
Charges (Benefits)	0	0
Other costs1 \| December 2019 Restructuring Plan
Restructuring Reserve [Roll Forward]
Charges (Benefits)	0	0
Other costs1 \| February 2018 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	0
Charges (Benefits)	2	(227)
(Payments) Recoveries	(2)
Restructuring reserve, end	0
Other costs1 \| Legacy Restructuring Plans
Restructuring Reserve [Roll Forward]
Charges (Benefits)	$ 0	$ (72)

Payments (Recoveries) for Restructuring

No definition available.

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- Definition

Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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