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Acquisitions (Narrative) (Details) customer in Thousands, $ in Thousands |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Jul. 31, 2015 USD ($) utility state | Jul. 08, 2015 USD ($) | Sep. 30, 2015 USD ($) state | Sep. 30, 2014 USD ($) | Sep. 30, 2015 USD ($) state customer | Sep. 30, 2014 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |
Revenues |  |  | $ 91,267 | $ 68,217 | $ 263,313 | [1] | $ 240,134
Operating income (loss) |  |  | (7,250) | $ (1,607) | (25,531) | [1] | (8,945)
Payments to Acquire Businesses, Gross |  |  |  |  | $ 41,234 | [1] | 0
CenStar |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of customers | customer |  |  |  |  | 16 |  |
Purchase price |  | $ 8,300 |  |  |  |  |
EBITDA attributable to operations, earn-out |  | 500 |  |  |  |  |
Revenues |  |  | 10,400 |  | $ 10,400 |  |
Operating income (loss) |  |  | (1,100) |  | 1,100 |  |
Acquisition costs |  |  | $ 100 |  | $ 100 |  |
Number of states in which company operates | state |  |  | 3 |  | 3 |  |
CenStar | Senior Secured Revolving Credit Facility | Convertible Debt |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisition liabilities incurred |  | 16,600 |  |  |  |  |
CenStar | Senior Secured Revolving Credit Facility | Convertible Debt |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Working capital |  | 10,400 |  |  |  |  |
CenStar | Censtar Convertible Debt | Convertible Debt |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisition liabilities incurred |  | $ 2,100 |  |  |  |  |
Oasis Power Holdings |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of customers | customer |  |  |  |  | 43 |  |
Purchase price | $ 20,000 |  |  |  |  |  |
Revenues |  |  | $ 10,600 |  | $ 15,400 |  |
Operating income (loss) |  |  |  |  | $ (500) |  | $ 100
Number of states in which company operates | state | 6 |  | 6 |  | 6 |  |
Number of utilities | utility | 18 |  |  |  |  |  |
Oasis Power Holdings | Senior Secured Revolving Credit Facility |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisition liabilities incurred | $ 15,000 |  |  |  |  |  |
Oasis Power Holdings | Oasis Power Holdings Convertible Debt | Convertible Debt |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisition liabilities incurred | $ 5,000 |  |  |  |  |  |
[1] | Financial information has been recast to include results attributable to the acquisition of Oasis Power Holdings LLC on May 12, 2015 from an affiliate. See Note 2 “Basis of Presentation” and Note 3 "Acquisitions" for further discussion.

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