GOODWILL AND OTHER INTANGIBLE ASSETS (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Intangible assets, balance	$ 9,956	$ 9,791
Additions due to acquisition		2,386
Adjustments	62
Amortization	(1,746)	(1,817)
Impairment charges	(110)	(404)
Foreign currency translation	6	2
Intangible assets, balance	8,168	9,956
T And D Segment [Member]
Intangible assets, balance	6,113	4,644
Additions due to acquisition		2,386
Adjustments	62
Amortization	(506)	(515)
Impairment charges	(110)	(404)
Foreign currency translation	6	2
Intangible assets, balance	5,565	6,113
Critical Power Segment [Member]
Intangible assets, balance	3,843	5,147
Amortization	(1,240)	(1,304)
Intangible assets, balance	$ 2,603	$ 3,843