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Investments and Fair Value Measurements (Tables)
 9 Months Ended
Sep. 30, 2013
Text Block [Abstract]  
Schedule of Investments

The following table is a summary of the Company’s investments:

 

     September 30,
2013		      December 31,
2012		  
     Held-to-
Maturity		      Held-to-
Maturity		  

Federal agency debt instruments

    $ 11,603       $ 11,036   
  

 

 

     

 

 

  
Schedule of Unrealized Gains, Losses, and Fair Value of Investments

The following table summarizes unrealized gains, losses, and fair value of investments:

 

     September 30,
2013		     December 31,
2012		  
     Held-to-
Maturity		     Held-to-
Maturity		  

Cost/amortized cost

    $ 11,603      $ 11,036   

Gross unrealized gains

      59        61   

Gross unrealized losses

      (1,066 )      (157 ) 
  

 

 

    

 

 

  

Fair value

    $ 10,596      $ 10,940   
  

 

 

    

 

 

  
Schedule of Maturity Profile of Investments

The following table sets forth the maturity profile of investments:

 

     September 30,
2013		      December 31,
2012		  
     Held-to-
Maturity		      Held-to-
Maturity		  

Due within one year

    $ —        $ —    

Due one year through five years

      —          —    

Due five years through ten years

      694         727   

Due over ten years

      10,909         10,309   
  

 

 

     

 

 

  

Total

    $ 11,603       $ 11,036