FAIR VALUE MEASUREMENTS - Changes to Contingent Consideration (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Business Combination, Contingent Consideration, Liability [Roll Forward]
Contingent consideration at January 1, 2016		$ 25,390
Increases due to acquisitions		75
Decrease due to payments		(1,169)
Changes due to foreign currency fluctuations		1,705
Changes in fair value reflected in Selling, general, and administrative expenses	$ 35	(2,644)	$ (640)
Contingent consideration at June 30, 2016		$ 23,357