ACQUISITIONS AND DIVESTITURES - Aggregate Purchase Price Paid for Acquisitions and Other Adjustments to Consideration (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Business Combinations [Abstract]
Cash	$ 34,210	$ 12,262
Promissory notes	7,618	12,654
Deferred consideration	624	441
Contingent consideration	13,301	0
Total purchase price	$ 55,753	$ 25,357