GOODWILL AND OTHER INTANGIBLE ASSETS (Details 1) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Intangible assets, balance	$ 8,168
Amortization	(1,390)	$ (1,309)
Foreign currency translation	5
Intangible assets, balance	6,783
T And D Segment [Member]
Intangible assets, balance	5,565
Amortization	(312)
Foreign currency translation	5
Intangible assets, balance	5,258
Critical Power Segment [Member]
Intangible assets, balance	2,603
Amortization	(1,078)
Intangible assets, balance	$ 1,525