Goodwill and Acquired Intangibles (Details) $ in Thousands	9 Months Ended
Oct. 02, 2021 USD ($)
Changes in the carrying amount of goodwill
Balance at beginning of period	$ 782,087
Goodwill resulting from acquisitions	150,021
Goodwill, measurement period adjustment	(633)
Effect of foreign currency translation	(5,526)
Balance at end of period	$ 925,949

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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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.

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