GOODWILL AND INTANGIBLE ASSETS - Carrying Amount of Goodwill by Segment (Details) $ in Thousands	6 Months Ended
Jun. 27, 2021 USD ($)
Goodwill [Roll Forward]
Balance - December 31, 2020	$ 395,800
Acquisitions	50,607
Adjustments to preliminary purchase price allocations	7,130
Balance - June 27, 2021	453,537
Manufacturing
Goodwill [Roll Forward]
Balance - December 31, 2020	338,045
Acquisitions	40,548
Adjustments to preliminary purchase price allocations	7,111
Balance - June 27, 2021	385,704
Distribution
Goodwill [Roll Forward]
Balance - December 31, 2020	57,755
Acquisitions	10,059
Adjustments to preliminary purchase price allocations	19
Balance - June 27, 2021	$ 67,833

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 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.

+ References

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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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