SEGMENT INFORMATION - Summary of Unallocated Corporate Overhead (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 26, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020
Segment Reporting Information [Line Items]
Stock-based compensation	$ 17,077	$ 13,143	$ 30,266	$ 24,103
Unallocated corporate
Segment Reporting Information [Line Items]
Stock-based compensation	10,417	8,203	18,059	14,907
Compensation, benefits, and other employee-related expenses	25,924	20,749	53,286	42,729
External consulting and other service expenses	6,301	4,917	13,657	7,386
Information technology	4,117	4,235	8,212	7,951
Depreciation	722	745	1,373	1,557
Acquisition and integration	15,036	869	25,596	7,852
Other general unallocated corporate	3,744	2,529	7,696	6,352
Total unallocated corporate expense	$ 66,261	$ 42,247	$ 127,879	$ 88,734

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

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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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No definition available.

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Represents the amount of unallocated corporate expenses.

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No definition available.

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- Definition

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

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- Definition

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

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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

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- Definition

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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