BUSINESS SEGMENT AND GEOGRAPHIC INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues
Revenues	$ 29,389	$ 24,924	$ 85,889	$ 80,272
Depreciation and Amortization	822	777	2,317	2,354
Operating Income (Loss)	1,212	(3,332)	3,690	(4,102)
T And D Solutions Segment [Member]
Revenues
Transformers	21,110	16,837	61,605	57,947
Switchgear	4,268	2,201	10,876	6,037
Revenues	25,378	19,038	72,481	63,984
Depreciation and Amortization	450	394	1,203	1,221
Operating Income (Loss)	2,003	(2,390)	6,083	(987)
Critical Power Solutions Segment [Member]
Revenues
Equipment	1,741	3,145	7,598	9,566
Service	2,270	2,741	5,810	6,722
Revenues	4,011	5,886	13,408	16,288
Depreciation and Amortization	355	365	1,063	1,082
Operating Income (Loss)	(11)	(311)	(100)	(903)
General Corporate [Member]
Revenues
Depreciation and Amortization	17	18	51	51
Operating Income (Loss)	$ (780)	$ (631)	$ (2,293)	$ (2,212)

Amount before allowances and discounts of service revenue classified as switchgear.

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Amount before allowances and discounts of service revenue classified as transformers.

+ References

No definition available.

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- Definition

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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The net result for the period of deducting operating expenses from operating revenues.

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No definition available.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Aggregate revenue during the period from sale of goods in the normal course of business, before deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Amount before allowances and discounts of service revenue classified as other.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(d))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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