OTHER COMPREHENSIVE INCOME (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2016 USD ($) Company	Dec. 31, 2016 USD ($) Company	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
OTHER COMPREHENSIVE INCOME [Abstract]
Other comprehensive (loss) income related to investment valuation				$ (100)
Loss on sale of investments				100
Number of companies acquired | Company	4	4
Cumulative translation adjustment		$ (7,658)	$ (4,916)	$ (3,277)
Reduction of comprehensive income	$ (8,600)	(8,600)
Deferred tax asset on unrealized foreign currency losses	$ 8,600	$ 8,600