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Investments (Tables)
3 Months Ended
Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]  
Summary of Investments by Type of Security

The following table summarizes investments by type of security as of December 31, 2014:

 

     Cost      Gross
Unrealized
Gains
     Gross
Unrealized
Losses
     Fair Market
Value
 

Available-for-sale securities:

           

Corporate debt securities, short-term

   $ 14,170,300       $ 455       $ (10,452    $ 14,160,303   

Corporate debt securities, long-term

     —          —          —          —    
  

 

 

    

 

 

    

 

 

    

 

 

 

Total

$ 14,170,300    $ 455    $ (10,452 $ 14,160,303   
  

 

 

    

 

 

    

 

 

    

 

 

 

The following table summarizes investments by type of security as of September 30, 2014:

 

     Cost      Gross
Unrealized
Gains
     Gross
Unrealized
Losses
     Fair Market
Value
 

Available-for-sale securities:

           

Corporate debt securities, short-term

   $ 16,273,996       $ 1,472       $ (6,298    $ 16,269,170   

Corporate debt securities, long-term

     2,075,002         —          (2,984      2,072,018   
  

 

 

    

 

 

    

 

 

    

 

 

 

Total

$ 18,348,998    $ 1,472    $ (9,282 $ 18,341,188   
  

 

 

    

 

 

    

 

 

    

 

 

 
Summary of Fair Value of Investments Measured on Recurring Basis

Based on the fair value hierarchy, all of the Company’s investments are classified as Level 2, as represented in the following table:

 

     December 31, 2014      September 30, 2014  

Short-term investments:

     

Corporate debt securities

     

Financial

   $ 7,171,700       $ 9,334,140   

Industrial

     4,735,034         3,980,772   

Utility

     855,672         756,215   

Commercial paper

     

Financial

     1,397,897         2,198,043   
  

 

 

    

 

 

 

Total short-term investments

$ 14,160,303    $ 16,269,170   
  

 

 

    

 

 

 

Long-term investments:

Corporate debt securities

Financial

$ —      $ 1,564,505   

Utility

  —        507,513   
  

 

 

    

 

 

 

Total long-term investments

$ —      $ 2,072,018