PROPERTY, PLANT AND EQUIPMENT - Narrative (Detail) - USD ($) $ in Thousands	8 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Apr. 30, 2014
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 21,599	$ 33,186	$ 33,168	$ 33,094
Depletion expense on operating lease contracts	7,799	9,295	9,428	9,948
Landfills
Property, Plant and Equipment [Line Items]
Amortization expense	$ 17,912	$ 26,529	$ 26,969	24,689
Depletion expense on operating lease contracts				$ 9,948