FAIR VALUE MEASUREMENTS - Changes to Contingent Consideration (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Business Combination, Contingent Consideration, Liability [Roll Forward]
Contingent consideration at January 1, 2016	$ 25,390
Increases due to acquisitions	57	$ 13,301
Decrease due to payments	(1,000)
Changes due to foreign currency fluctuations	1,164
Changes in fair value reflected in Selling, general, and administrative expenses	(2,644)
Contingent consideration at March 31, 2016	$ 22,967