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, 2013	Sep. 30, 2012
Business Combinations [Abstract]
Cash	$ 131,902	$ 148,073
Promissory notes	56,602	24,496
Deferred consideration	28,550	18,259
Contingent consideration	3,378	13,606
Total purchase price	$ 220,432	$ 204,434