XML 15 R10.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Value of Financial Instruments
9 Months Ended
Sep. 30, 2013
Fair Value of Financial Instruments  
Fair Value of Financial Instruments

4. Fair Value of Financial Instruments

 

Financial instruments consist of cash and cash equivalents, available-for-sale securities, accounts payable and derivative instruments. These financial instruments are stated at their respective historical carrying amounts, which approximate fair value due to their short term nature, except available-for-sale securities and derivative instruments which are marked to market at the end of each reporting period.