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Money Market Funds (Tables)
12 Months Ended
Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]  
Fair Value Assets Measured on Recurring Basis

The following table presents money market funds at their level within the fair value hierarchy at December 31, 2015 and 2014.

 

    Total     Level 1     Level 2     Level 3  
                         
December 31, 2015:                                
Money market funds   $ 104,095     $ 104,095     $     $  
                                 
December 31, 2014:                                
Money market funds   $ 213,699     $ 213,699     $     $