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Business Combinations (Details) In Millions, unless otherwise specified | 12 Months Ended |  | 12 Months Ended |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2011 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2012 Electropar [Member] USD ($) | Dec. 31, 2011 Electropar [Member] USD ($) | Jul. 31, 2011 Electropar [Member] USD ($) | Jul. 31, 2011 Electropar [Member] NZD | Jul. 31, 2010 Electropar [Member] USD ($) | Jul. 31, 2010 Electropar [Member] NZD | Dec. 31, 2012 Australian Electricity [Member] AUD | Jan. 31, 2012 Australian Electricity [Member] AUD
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquisition of outstanding equity |  | $ 8.9 |  |  |  |  | $ 14.8 | 20.3 |  | 6.3
Business combination working capital adjustment |  |  | 0.2 |  |  |  |  |  | 0.5 |
Additional earn-out consideration payment as of purchase price |  |  |  |  | 1.5 | 2.0 |  |  |  | 1.1
Accrued liability additional earn-out consideration accrued |  |  |  |  | 0.4 |  |  |  | 0.4 |
Amount accrued in the consolidated balance sheet |  |  |  | 1.1 |  |  |  |  |  |
Accrued liability additional earn-out consideration increased |  |  |  | 0.6 |  |  |  |  |  |
Adjustment for actual results |  |  |  | 0.6 |  |  |  |  |  |
Changes in Net present value of liability |  |  |  | 0.1 |  |  |  |  |  |
Cost of Acquisition of subsidiaries and other assets |  |  |  |  |  |  |  |  |  | 1.8
Business Combination (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |
Cost of Acquisition of subsidiaries and other assets | $ 0.6 |  |  |  |  |  |  |  |  |

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- Definition Business combination contingent consideration arrangements change in amount of contingent consideration liability adjustment for actual results. + References No definition available. + Details
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- Definition Business combination contingent consideration arrangements maximum change in amount of net present value of liability. + References No definition available. + Details
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- Definition Business combination working capital adjustment. + References No definition available. + Details
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- Definition Amount of potential cash payments that could result from the contingent consideration arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The amount of cash and cash equivalents acquired in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition This element represents the amount of any change, including any differences arising upon settlement, recognized during the reporting period in the value of a liability, arising from an item of contingent consideration, assumed in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e7008-128479 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 72 -Subparagraph b -Clause 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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