Restructuring and Related Activities (Details) - Accrued Severance - Cost Reduction Plan - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Sep. 27, 2020
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	$ 11,698	$ 13,385	$ 19,575	$ 19,575
New charges	2,060	4,660	2,529
Cash payments	(3,968)	(4,795)	(4,483)
Foreign currency translation	(156)	(132)	(89)
Other adjustments	(1,541)	(1,420)	(4,147)
Restructuring Reserve, Ending Balance	$ 8,093	$ 11,698	$ 13,385	8,093
Restructuring and Integration, Incremental costs				$ 9,600

Restructuring and Integration, Incremental costs

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- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

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Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

+ References

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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.

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

+ References

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- Definition

Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

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Amount of increase (decrease) in the restructuring reserve related to foreign currency translation (gain) loss and other increases (decreases).

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