GOODWILL AND INTANGIBLE ASSETS (Details 2) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite Lived and Indefinite Lived Intangible Assets and Liabilities by Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	$ 28,779	$ 29,032
Finite-Lived Intangible Assets, Accumulated Amortization	(12,976)	(11,825)
Finite-Lived Intangible Assets, Net	15,803	17,207
Other intangible assets, net	26,730	28,018
Technical Know How [Member]
Finite Lived and Indefinite Lived Intangible Assets and Liabilities by Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	12,944	12,956
Finite-Lived Intangible Assets, Accumulated Amortization	(7,438)	(6,833)
Customer Relationships [Member]
Finite Lived and Indefinite Lived Intangible Assets and Liabilities by Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	8,981	9,011
Finite-Lived Intangible Assets, Accumulated Amortization	(1,744)	(1,315)
Land Rights [Member]
Finite Lived and Indefinite Lived Intangible Assets and Liabilities by Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	2,498	2,672
Finite-Lived Intangible Assets, Accumulated Amortization	(304)	(271)
Patents, trade names, drawings, and other [Member]
Finite Lived and Indefinite Lived Intangible Assets and Liabilities by Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	4,356	4,393
Finite-Lived Intangible Assets, Accumulated Amortization	(3,490)	(3,406)
Trade names [Member]
Finite Lived and Indefinite Lived Intangible Assets and Liabilities by Major Class [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	$ 10,927	$ 10,811