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

Fair Value

as of

June 30,

2014

 

Quoted

Prices in

Active

Markets

(Level 1)

 

Significant

Other

Observable

Inputs

(Level 2)

Cash and cash equivalents   $ 5,902,228     $ 5,902,228     $  
Available-for-sale investments   6,012,309     6,012,309      
Assets measured at fair value at June 30, 2014   $ 11,914,537     $ 11,914,537     $