GOODWILL AND INTANGIBLE ASSETS (Details 2) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 28,883	$ 28,779
Finite-Lived Intangible Assets, Accumulated Amortization	(13,326)	(12,976)
Finite-Lived Intangible Assets, Net	15,557	15,803
Other intangible assets, net	26,966	26,730
Trade names
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	11,409	10,927
Technical know-how
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	12,983	12,944
Finite-Lived Intangible Assets, Accumulated Amortization	(7,606)	(7,438)
Customer lists
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	9,010	8,981
Finite-Lived Intangible Assets, Accumulated Amortization	(1,861)	(1,744)
Land rights
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	2,519	2,498
Finite-Lived Intangible Assets, Accumulated Amortization	(319)	(304)
Patents, trade names, drawings, and other
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	4,371	4,356
Finite-Lived Intangible Assets, Accumulated Amortization	$ (3,540)	$ (3,490)