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Operating Leases (Tables)
3 Months Ended
Mar. 31, 2015
Leases [Abstract]  
Summary of Total Lease and Operating Expenses
The following table summarizes the total lease and operating expenses for the three months ended March 31, 2015 and 2014:
 
 
March 31,
2015
 
March 31,
2014
Three Months Ended
$
228,464

 
$
226,089

Future Minimum Lease Payments under Operating Leases
The approximate future minimum lease payments under the operating leases are as follows:
 
Future Minimum Lease Payments
Nine Months 
 Remaining In
 
 
 
 
 
 
 
 
 
 
 
 
2015
 
2016
 
2017
 
2018
 
2019
 
Thereafter
 
Total
$
522,000

 
$
696,000

 
$
696,000

 
$
632,000

 
$
596,000

 
$
2,965,000

 
$
6,107,000