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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2015
Accounting Policies [Abstract]  
Schedule of Activity in Asset Retirement Obligations

Activity in the asset retirement obligation account for the years ended December 31, is as follows:

 

     2015      2014  

Balance, beginning

    $ 166       $ 160   

Accretion of liability due to passage of time

      6         6   

Amortization of asset due to passage of time

      —           —     
  

 

 

     

 

 

  

Balance, ending

    $ 172       $ 166