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Operating Leases (Tables)
12 Months Ended
Dec. 31, 2018
Leases [Abstract]  
Summary of total lease and operating expense
The following table summarizes the total lease and operating expenses for the years ended December 31, 2018, 2017 and 2016:
For the year ended December 31,
2018
 
2017
 
2016
$
970,143

 
$
936,008

 
$
882,231

Future minimum lease payments under the operating leases
The approximate future minimum lease payments under the operating lease are as follows:
 
 
Future Minimum Lease Payments by Year
Total
 
2019
 
2020
 
2021
 
2022
 
2023
 
Thereafter
$
3,853,831

 
$
586,350

 
$
614,721

 
$
624,179

 
$
624,179

 
$
624,179

 
$
780,223