GOODWILL AND INTANGIBLE ASSETS - Estimated Useful Lives of Finite-Lived Intangible Assets (Details)	9 Months Ended
	Sep. 27, 2020
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	5 years
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	16 years
Trade names | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	3 years
Trade names | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	20 years
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	3 years