GOODWILL AND INTANGIBLE ASSETS (Details 2) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 28,913	$ 29,032
Finite-Lived Intangible Assets, Accumulated Amortization	(12,695)	(11,825)
Finite-Lived Intangible Assets, Net	16,218	17,207
Other intangible assets, net	27,402	28,018
Technical Know How [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	12,962	12,956
Finite-Lived Intangible Assets, Accumulated Amortization	(7,295)	(6,833)
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	8,997	9,011
Finite-Lived Intangible Assets, Accumulated Amortization	(1,639)	(1,315)
Land Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	2,601	2,672
Finite-Lived Intangible Assets, Accumulated Amortization	(303)	(271)
Patents, trade names, drawings, and other [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	4,353	4,393
Finite-Lived Intangible Assets, Accumulated Amortization	(3,458)	(3,406)
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$ 11,184	$ 10,811