ACQUISITIONS, DIVESTITURES, AND ASSETS HELD FOR SALE - Aggregate Purchase Price Paid for Acquisitions and Other Adjustments to Consideration (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Business Acquisition [Line Items]
Cash	$ 16,871	$ 24,884
Promissory notes	12,891
Deferred consideration	1,001
Contingent consideration	53
Total purchase price	30,816
Current Year Acquisitions
Business Acquisition [Line Items]
Cash	16,833
Promissory notes	13,104
Deferred consideration	1,001
Contingent consideration	53
Total purchase price	30,991
Adjustments to Prior Year Acquisitions
Business Acquisition [Line Items]
Cash	38
Promissory notes	(213)
Total purchase price	$ (175)