GOODWILL AND OTHER INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Goodwill [Roll Forward]
Balance at beginning of period	$ 187,591
Translation adjustment	0
Balance at end of period	187,591
Other Intangibles Assets [Roll Forward]
Balance at beginning of period	94,831
Translation adjustment	483
Amortization	(8,607)	$ (9,038)
Balance at end of period	86,707
Total Goodwill and Intangible Assets [Roll Forward]
Balance at beginning of period	282,422
Translation adjustment	483
Amortization	(8,607)	$ (9,038)
Balance at end of period	$ 274,298