GOODWILL (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Change in goodwill
Beginning balance	$ 17,757	$ 18,303
Goodwill acquired (Note 2)	10,025
Effect of foreign currency translation	313	(546)
Ending balance	$ 28,095	$ 17,757