Goodwill and Other Intangible Assets, Net - Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 24, 2021	Sep. 25, 2020	Sep. 24, 2021	Sep. 25, 2020	Dec. 25, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 581,136,000		$ 581,136,000		$ 559,735,000
Goodwill, increase during the period			21,402,000		$ 0
Amortization of intangible assets	$ 12,293,000	$ 11,872,000	$ 36,260,000	$ 35,619,000
Weighted average useful life			15 years 4 months 24 days

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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- Definition

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 (decrease) 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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