SEGMENT INFORMATION - Summary of Unallocated Corporate Overhead (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Stock-based compensation	$ 16,505	$ 13,547	$ 29,404	$ 24,088
Unallocated corporate
Segment Reporting Information [Line Items]
Stock-based compensation	10,718	9,616	18,992	16,607
Compensation, benefits, and other employee-related expenses	13,753	15,315	35,791	35,911
External consulting and other service expenses	4,094	5,010	7,904	7,944
Information technology	4,555	3,190	7,277	5,654
Depreciation	834	1,585	2,281	3,419
Acquisition and integration	12,470	11,692	17,942	14,556
Other general unallocated corporate	1,975	1,865	4,456	4,262
Total unallocated corporate expense	$ 48,399	$ 48,273	$ 94,643	$ 88,353

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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- Definition

Represents the amount of unallocated corporate expenses.

+ References

No definition available.

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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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.

+ References

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