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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2015
Accounting Policies [Abstract]  
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, 2015, 2014 and 2013:

 

     2015   2014   2013

Years of cash flows before terminal value

   5   5   5

Discount rates

   12% to 16%   12% to 14%   12% to 14%

EBITDA multiples

   5.0 to 6.5   5.0 to 6.0   5.0 to 8.0

Weighting of three approaches:

      

Discounted cash flows

   70%   70%   70%

Market multiple

   15%   15%   15%

Market capitalization

   15%   15%   15%