FAIR VALUE MEASUREMENTS - Changes to Contingent Consideration (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Business Combination, Contingent Consideration, Liability [Roll Forward]
Contingent consideration at December 31, 2013	$ 12,527
Increases due to acquisitions	16,495	3,378
Decrease due to change of noncontrolling interests	635
Decrease due to payments	(2,916)
Changes due to foreign currency fluctuations	(618)
Changes in fair value reflected in Selling, general, and administrative expenses	3,953	(307)
Contingent consideration at September 30, 2014	$ 28,806