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Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2019
Commitments And Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Lease Payments Under Operating Leases

The future minimum lease payments required under operating leases in effect at March 31, 2019 were as follows:

 

Year ending:

 

 

 

 

2019 (remaining nine months)

 

$

781,489

 

2020

 

 

724,744

 

2021

 

 

322,959

 

2022

 

 

104,157

 

2023

 

 

71,897

 

2024

 

 

30,217

 

 

 

$

2,035,463