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Goodwill and Other Intangible Assets (Schedule of Carrying Value of Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Balance	$ 9,791	$ 5,285
Additions due to acquisition	2,386	5,147
Amortization	(1,817)	(318)
Impairment charges	(428)	(231)
Foreign currency translation	2	(92)
Balance	9,956	9,791
T & D Solutions Segment [Member]
Finite-Lived Intangible Assets [Line Items]
Balance	4,386	4,966
Additions due to acquisition	2,386	0
Amortization	(454)	(256)
Impairment charges	(404)	(231)
Foreign currency translation	2	(92)
Balance	5,916	4,386
Critical Power Solutions Segment [Member]
Finite-Lived Intangible Assets [Line Items]
Balance	5,405	319
Additions due to acquisition	0	5,147
Amortization	(1,365)	(62)
Impairment charges	0	0
Foreign currency translation	0	0
Balance	$ 4,040	$ 5,405

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of increase (decrease) to assets, excluding financial assets and goodwill, lacking physical substance with a finite life for foreign currency translation adjustments.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Section 50
-Paragraph 3
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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
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-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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