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3. Fair Value Measurement (Tables)
9 Months Ended
Sep. 30, 2014
Fair Value Measurement Tables  
Schedule of fair value measurements
   

Fair Value as of

September 30,

2014

   

Quoted Prices in

Active Markets

(Level 1)

   

Significant Other Observable Inputs

(Level 2)

 
Cash and cash equivalents   $ 3,275,057     $ 3,275,057     $  
Available-for-sale investments     7,744,285       7,744,285        
Assets measured at fair value at September 30, 2014   $ 11,019,342     $ 11,019,342     $