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6. Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2014
Fair Value Measurements Tables  
Financial instruments
  September 30, 2014   December 31, 2013
  Carrying Value Estimated Fair Value   Carrying Value Estimated Fair Value
Assets:          
Trade receivables, net $ 739 $ 733   $ 1,206 $ 1,190
Certificate of deposit 251 251   250 250
Equipment financing receivables 641 641   492 492
Liabilities:          
Acquisition related contingent consideration $ 211 $ 211   $ 51 $ 51
Assets for which fair value is disclosed

 

Contingent consideration liability   Fair Value at September 30, 2014   Valuation technique   Unobservable inputs   Range
Revenue - based payments   $211   Discounted cash flow   Discount Rate   12.5%
                 
            Probability of milestone payment   90%
            Projected year of payments   2014 - 2015

  

Contingent consideration liability   Fair Value at December 31, 2013   Valuation technique   Unobservable inputs   Range
Revenue - based payments   $51   Discounted cash flow   Discount Rate   17.9%
                 
            Probability of milestone payment   90%
            Projected year of payments   2014

Fair value measurement for the contingent consideration based on significant inputs
    Acquisition Related Contingent Consideration  
Balance at December 31, 2013   $ 51  
Change in fair value     3  
Cash payments     (54 )
Additions     211  
Balance at September 30, 2014   $ 211