ACQUISITIONS AND DIVESTITURES - Aggregate Purchase Price Paid for Acquisitions and Other Adjustments to Consideration (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Business Combinations [Abstract]
Cash	$ 328,811	$ 131,902
Promissory notes	78,325	56,602
Deferred consideration	6,124	28,550
Contingent consideration	16,495	3,378
Total purchase price	$ 429,755	$ 220,432