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Basis of Presentation (Narrative) (Details) $ / shares in Units, $ in Millions |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 05, 2015 USD ($) $ / shares shares | Sep. 30, 2015 USD ($) $ / shares shares | Sep. 24, 2013 USD ($) $ / shares shares | Dec. 31, 2015 Segment
Number of reportable segments | Segment |  |  |  | 2
Issuance of common stock, shares | shares | 168,750 | 1,125,000 | 1,265,000 |
Issuance of common stock, per share | $ / shares | $ 4.00 | $ 4.00 | $ 7.00 |
Net proceeds from issuance of common stock | $ 0.6 | $ 3.9 | $ 7.9 |
Stock issued during period, shares, new issues | shares | 168,750 | 1,125,000 | 1,265,000 |
Proceeds from Issuance of Common Stock | $ 0.6 | $ 3.9 | $ 7.9 |
Underwriters [Member] |  |  |  |
Net proceeds from issuance of common stock | 0.6 |  |  |
Proceeds from Issuance of Common Stock | $ 0.6 |  |  |
Titan [Member] |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  | 100.00%
Business acquisition, effective date of acquisition |  |  |  | Dec. 02, 2014
Business Acquisition, Name of Acquired Entity |  |  |  | Titan Energy Worldwide, Inc.
Business Acquisition, Description of Acquired Entity |  |  |  | a Minneapolis-based provider of sales and service for commercial and industrial-scale onsite power systems, including generators and associated switching equipment.
Harmonics Holdings Inc. [Member] |  |  |  |
Business acquisition, effective date of acquisition |  |  |  | Jan. 16, 2015
Business Acquisition, Name of Acquired Entity |  |  |  | Harmonics Holdings Inc.
Business Acquisition, Description of Acquired Entity |  |  |  | a New Haven, Connecticut based specialty provider of equipment that incorporates a patented technology for the elimination of harmonic currents in power distribution systems.
Pacific Power Systems Integration Inc. [Member] |  |  |  |
Business acquisition, effective date of acquisition |  |  |  | Aug. 01, 2015
Business Acquisition, Name of Acquired Entity |  |  |  | Pacific Power Systems Integration, Inc.
Business Acquisition, Description of Acquired Entity |  |  |  | a Santa Fe Springs, California based manufacturer of custom electrical power distribution and control equipment, with a specific emphasis on low voltage draw-out, metal-enclosed and metal-clad switchgear.

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