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Goodwill and Other Intangible Assets (Schedule of Goodwill) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2015 USD ($)
Goodwill [Roll Forward]
Balance as of December 31, 2014	$ 9,606
Additions due to acquisitions	1,177
Adjustments	(159)
Balance as of June 30, 2015	10,624
T & D Solutions Segment [Member]
Goodwill [Roll Forward]
Balance as of December 31, 2014	6,029
Additions due to acquisitions	1,177
Balance as of June 30, 2015	7,206
Critical Power Solutions Segment [Member]
Goodwill [Roll Forward]
Balance as of December 31, 2014	3,577
Adjustments	(159)
Balance as of June 30, 2015	$ 3,418

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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