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Fair Value Of Financial Instruments
3 Months Ended
Mar. 31, 2012
Fair Value Of Financial Instruments [Abstract]  
Fair Value Of Financial Instruments

NOTE 5 – FAIR VALUE OF FINANCIAL INSTRUMENTS

The carrying amounts of cash, accounts receivable and accounts payable approximate their estimated fair value due to the short-term nature of these instruments. Since our other financial liabilities are not traded in an open market, we generally use a present value technique, which is a level 3 input, as defined in generally accepted accounting principles, to measure the estimated fair value of these financial instruments, except for valuing stock options and warrants. The rate used for discounting expected cash flows is a risk-free rate adjusted for systematic and unsystematic risk.

The carrying amounts and estimated fair values of these financial instruments (all are liabilities) at March 31, 2012, are as follows (in thousands):

 

     Carrying
Amount
    Estimated
Fair Value
 

Promissory notes

   $ 4,590      $ 4,590   

Zero-coupon promissory notes

     230        225   

Debentures

     549        574   

Senior promissory notes

     1,758        1,837   

Long-term promissory notes

     1,900        1,920   

Less: unamortized discount

     (172     —     
  

 

 

   

 

 

 

Net liabilities

   $ 8,855      $ 9,146