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Business Combinations (Tables) | 9 Months Ended
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Sep. 30, 2017
Business Combinations [Abstract] |
Schedule of Business Acquisitions, by Acquisition [Table Text Block] | The following reflects our preliminary allocation of purchase price as of June 1, 2017:
| Fair Value |  | Weighted Average Useful Life
| (in thousands) |  | (in years)
Current assets | $ | 15,118 |  |  |
Property, plant, and equipment | 2,275 |  |  |
Other long-term assets | 1,879 |  |  |
Identified intangible assets |  |  |
Core-developed technology | 19,250 |  |  | 8
Customer contracts and relationships | 12,230 |  |  | 10
Trademarks and trade names | 4,310 |  |  | 15
Total identified intangible assets subject to amortization | 35,790 |  |  | 10
In-process research and development (IPR&D) | 710 |  |  |
Total identified intangible assets | 36,500 |  |  |
Goodwill | 59,137 |  |  |
Current liabilities | (10,787 | ) |  |
Long-term liabilities | (4,645 | ) |  |
Total net assets acquired | $ | 99,477 |  |  |
Schedule Of Revenues and Earnings Attributable to an Acquired Business [Table Text Block] | The following table presents the revenues and net income (loss) from Comverge's operations that are included in our Consolidated Statements of Operations:
| July 1, 2017 - September 30, 2017 |  | June 1, 2017 - September 30, 2017
| (in thousands)
Revenues | $ | 14,183 |  |  | $ | 18,979 |
Net income (loss) | (128 | ) |  | (1,914 | )
Business Acquisition, Pro Forma Information [Table Text Block] | The following supplemental pro forma results are based on the individual historical results of Itron and Comverge, with adjustments to give effect to the combined operations as if the acquisition had been consummated on January 1, 2016.
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
| ( in thousands)
Revenues | $ | 486,747 |  |  | $ | 524,471 |  |  | $ | 1,489,533 |  |  | $ | 1,563,405 |
Net income (loss) | 27,414 |  |  | (8,607 | ) |  | 61,475 |  |  | 16,148 |

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