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Acquisitions Recognized Identifiable Assets Acquired and Liabilities Assumed (Details) - USD ($) | Sep. 30, 2015 | Jul. 31, 2015 | Jul. 08, 2015 | Dec. 31, 2014
--- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |
Goodwill | $ 18,385,000 |  |  | $ 0
CenStar |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash |  |  | $ 371,000 |
Net working capital, net of cash acquired |  |  | 10,094,000 |
Property and equipment |  |  | 52,000 |
Goodwill |  |  | 6,497,000 |
Fair value of derivative liabilities |  |  | (3,475,000) |
Total |  |  | 19,234,000 |
CenStar | Customer Relationships |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangible assets |  |  | 5,044,000 |
CenStar | Trademarks |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangible assets |  |  | $ 651,000 |
Oasis Power Holdings |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash |  | $ 271,000 |  |
Net working capital, net of cash acquired |  | 2,056,000 |  |
Property and equipment |  | 38,000 |  |
Goodwill |  | 11,889,000 |  |
Fair value of derivative liabilities |  | (819,000) |  |
Total |  | 22,000,000 |  |
Oasis Power Holdings | Customer Relationships |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangible assets |  | 7,963,000 |  |
Oasis Power Holdings | Trademarks |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangible assets |  | $ 602,000 |  |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
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