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SEGMENT INFORMATION - Summary of Unallocated Corporate Overhead (Details) - Unallocated corporate - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 25, 2022	Jun. 26, 2021	Jun. 25, 2022	Jun. 26, 2021
Segment Reporting Information [Line Items]
Stock-based compensation	$ 8,531	$ 10,417	$ 17,034	$ 18,059
Compensation, benefits, and other employee-related expenses	20,507	25,924	49,143	53,286
External consulting and other service expenses	4,727	6,301	9,046	13,657
Information technology	3,079	4,117	5,553	8,212
Depreciation	567	721	1,126	1,373
Acquisition and integration	3,014	15,036	8,840	25,596
Other general unallocated corporate	2,986	3,745	3,127	7,696
Total unallocated corporate expense	$ 43,411	$ 66,261	$ 93,869	$ 127,879

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- Definition

Represents the sum total of audit, tax and related expenses.

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Expenditures for salaries and bonuses for officers and non-officers. Does not include allocated share-based compensation, pension and post-retirement benefit expense.

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Amount of direct costs of the business combination or disposition including legal, accounting, and other costs incurred to consummate the business acquisition or disposition.

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- Definition

Represents the amount of unallocated corporate expenses.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of expense in the period for communications and data processing expense.

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Amount of general expenses not normally included in Other Operating Costs and Expenses.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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