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Operating Leases (Tables)
6 Months Ended
Jun. 30, 2013
Leases [Abstract]  
Summary of Total Lease and Operating Expenses

The following table summarizes the total lease and operating expenses for the three and six months ended June 30, 2013 and 2012:

 

     2013      2012  

Three Months Ended

   $ 164,351       $ 167,872   

Six Months Ended

     340,239         338,251   
Future Minimum Lease Payments under Operating Leases

The approximate future minimum lease payments under the operating leases are as follows:

 

Six Months

Remaining In

                           

2013

   2014      2015      2016      Thereafter  

$228,000

   $ 454,000       $ 401,000       $ 234,000       $ —