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Fair Value Measurement of Assets and Liabilities (Tables)
9 Months Ended
Sep. 30, 2012
Fair Value Measurement Of Assets and Liabilities [Abstract]  
Fair value assumptions and methodology for assets and liabilities
 
Months Ended
September 30, 2011
     
 Annual dividend yield
 
--
 Expected life (years)
 
0.08 – 3.0
 Risk-free interest rate
 
0.08%- 1.27%
 Expected volatility
 
110% - 263%