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Investments (Tables)
9 Months Ended
Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]  
Summary of Investments

The following is a summary of investments as of September 30, 2018 and December 31, 2017. The Company considered all investments as available for sale.

 

     As of September 30, 2018  
     Adjusted
Cost
     Gross
Unrealized
Gains
     Gross
Unrealized
(Losses)
     Estimated
Fair
Value
 

Municipal securities

   $ 69,192      $ —        $ (438    $ 68,754  
  

 

 

    

 

 

    

 

 

    

 

 

 

Total investments

   $ 69,192      $ —        $ (438    $ 68,754  
  

 

 

    

 

 

    

 

 

    

 

 

 

 


     As of December 31, 2017  
     Adjusted
Cost
     Gross
Unrealized
Gains
     Gross
Unrealized
(Losses)
     Estimated
Fair
Value
 

Municipal securities

   $ 84,768      $ —        $ (409    $ 84,359  

Certificates of Deposit

   $ 4,915      $ —        $ (3    $ 4,912  
  

 

 

    

 

 

    

 

 

    

 

 

 

Total investments

   $ 89,683      $ —        $ (412    $ 89,271