GOODWILL AND OTHER INTANGIBLE ASSETS (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Intangible assets, balance	$ 8,168
Amortization	(414)	$ (454)
Foreign currency translation	2
Intangible assets, balance	7,756
T And D Segment [Member]
Intangible assets, balance	5,565
Amortization	(104)
Foreign currency translation	2
Intangible assets, balance	5,463
Critical Power Segment [Member]
Intangible assets, balance	2,603
Amortization	(310)
Intangible assets, balance	$ 2,293