Business Segment and Geographic Information (Reconciliation of Revenue from Segments to Consolidated) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Revenues	$ 26,460	$ 21,064	$ 55,348	$ 41,957
Operating Income (Loss)	(687)	571	(770)	1,568
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	26,460	21,064	55,348	41,957
Depreciation and Amortization	793	421	1,578	825
Operating Income (Loss)	(687)	571	(770)	1,568
Operating Segments [Member] \| T & D Solutions Segment [Member]
Segment Reporting Information [Line Items]
Revenues	20,914	20,857	44,577	40,607
Depreciation and Amortization	397	392	790	769
Operating Income (Loss)	483	1,401	2,189	2,957
Operating Segments [Member] \| Critical Power Solutions Segment [Member]
Segment Reporting Information [Line Items]
Revenues	5,546	207	10,771	1,350
Depreciation and Amortization	379	18	755	35
Operating Income (Loss)	(586)	(263)	(1,378)	(227)
Operating Segments [Member] \| Corporate Segment [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization	17	11	33	21
Operating Income (Loss)	$ (584)	$ (567)	$ (1,581)	$ (1,162)

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.

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=31042434&loc=d3e3602-108585

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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=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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