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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2012
Significant Estimates Used by Management in Determining Fair Values of Company's Reporting Units | The following table presents the significant estimates used by management in determining the fair values of Quanta’s reporting units at December 31, 2012, 2011 and 2010:
|  | Operating Units Providing Predominantly Electric Power and Natural Gas and Pipeline Infrastructure Services |  | Operating Unit Providing Fiber Optic Licensing
|  | 2012 |  | 2011 |  | 2010 |  | 2012 |  | 2011 |  | 2010
Years of cash flows before terminal value |  | 5 |  | 5 |  | 5 |  | 15 |  | 15 |  | 15
Discount rates |  | 12% to 13% |  | 13% |  | 15% |  | 12% |  | 14% |  | 14%
EBITDA multiples |  | 4.5 to 8.0 |  | 4.5 to 8.0 |  | 4.5 to 8.0 |  | 9.5 |  | 9.5 |  | 9.5
Weighting of three approaches: |  |  |  |  |  |  |  |  |  |  |  |
Discounted cash flows |  | 70% |  | 70% |  | 70% |  | 90% |  | 90% |  | 90%
Market multiple |  | 15% |  | 15% |  | 15% |  | 5% |  | 5% |  | 5%
Market capitalization |  | 15% |  | 15% |  | 15% |  | 5% |  | 5% |  | 5%
Minimum Future Licensing Revenues | Minimum future licensing revenues expected to be recognized by Quanta pursuant to these agreements at December 31, 2012 are as follows (in thousands):
|  | Minimum Future Licensing Revenues |
Year Ending December 31 — |  |  |  |
2013 |  | $ | 84,104 |
2014 |  |  | 62,014 |
2015 |  |  | 40,234 |
2016 |  |  | 31,277 |
2017 |  |  | 23,443 |
Thereafter |  |  | 125,225 |
Fixed non-cancelable minimum licensing revenues |  | $ | 366,297 |

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- Definition Significant estimates used by management in determining the fair values of company's reporting units. + References No definition available. + Details
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