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GOODWILL AND INTANGIBLE ASSETS - Summary of Goodwill Activity (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 735,670
Acquisitions	170,368
Business Combination Adjustments	1,838
Goodwill, ending balance	907,876
Eastern
Goodwill [Roll Forward]
Goodwill, beginning balance	73,893
Acquisitions	774
Business Combination Adjustments	0
Goodwill, ending balance	74,667
Western
Goodwill [Roll Forward]
Goodwill, beginning balance	285,056
Acquisitions	0
Business Combination Adjustments	704
Goodwill, ending balance	285,760
Mid-Atlantic
Goodwill [Roll Forward]
Goodwill, beginning balance	332,247
Acquisitions	169,594
Business Combination Adjustments	946
Goodwill, ending balance	502,787
Resource Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	44,474
Acquisitions	0
Business Combination Adjustments	188
Goodwill, ending balance	$ 44,662

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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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