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Leases - Additional Information (Details) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
Leases    
Leases initial term 12 months  
Operating right of use assets $ 6,845,031 $ 0
Operating lease liability $ 7,241,805  
Weighted-average remaining lease term 6 years 7 months 6 days  
Average discount rate 7.50%