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Acquisitions (Summary of Acquisitions) (Details) - USD ($) $ in Thousands |  |  | 6 Months Ended |
--- | --- | --- | --- | ---
Jan. 16, 2015 | Dec. 02, 2014 | Jun. 30, 2015 | Dec. 31, 2014
Purchase Price Allocation |  |  |  |
Goodwill |  |  | $ 10,624 | $ 9,606
Net assets acquired |  |  | $ 3,160 |
Titan Energy Worldwide Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisition, Name of Acquired Entity |  |  | Titan Energy Worldwide, Inc. |
Business acquisition, effective date of acquisition |  |  | Dec. 02, 2014 |
Business combination location within acquiree's segment |  |  | Critical Power |
Business combination primary form of consideration |  |  | Cash/stock |
Purchase Price |  |  |  |
Cash consideration |  | $ 953 |  |
Common stock consideration |  | 1,005 |  |
Purchase Price Allocation |  |  |  |
Current assets |  | 3,721 |  |
Property, plant and equipment |  | 410 |  |
Identifiable intangible assets |  | 5,147 |  |
Goodwill |  | 2,719 |  |
Total assets acquired |  | 11,997 |  |
Current liabilities |  | (6,881) |  |
Notes payable |  | (3,158) |  |
Net assets acquired |  | 1,958 | $ 1,958 |
Cash and cash equivalents |  | $ 100 |  |
Harmonics Holdings Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business Acquisition, Name of Acquired Entity |  |  | Harmonics Holdings Inc. |
Business acquisition, effective date of acquisition |  |  | Jan. 16, 2015 |
Business combination location within acquiree's segment |  |  | T&D Solutions |
Business combination primary form of consideration |  |  | Seller note/debt forgiveness |
Purchase Price |  |  |  |
Cash consideration | $ 93 |  |  |
Purchase Price Allocation |  |  |  |
Current assets | 21 |  |  |
Property, plant and equipment | 4 |  |  |
Goodwill | 1,177 |  |  |
Total assets acquired | 1,202 |  |  |
Net assets acquired | 1,202 |  | $ 1,202 |
Harmonics Holdings Inc. [Member] | Forgiveness Trade Payables and Indebtedness to Purchaser [Member] |  |  |  |
Purchase Price |  |  |  |
Business combination, separately recognized transactions, assets recognized | 609 |  |  |
Harmonics Holdings Inc. [Member] | Deferred Purchase Price Due To Seller [Member] |  |  |  |
Purchase Price |  |  |  |
Business combination, separately recognized transactions, assets recognized | $ 500 |  |  |

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