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Leases - Summary of Future Minimum Lease Payments (Details) - USD ($)
Mar. 31, 2019
Jan. 01, 2019
Leases [Abstract]    
Remainder of 2019 $ 2,861,000  
2020 3,891,000  
2021 3,979,000  
2022 4,052,000  
2023 4,023,000  
Thereafter 15,952,000  
Total remaining lease payments 34,758,000  
Less: present value adjustment (10,878,000)  
Total operating lease liabilities 23,880,000  
Less: current portion (1,888,804) $ (1,733,600)
Long-term operating lease liabilities $ 21,990,881 $ 22,484,763
Weighted-average remaining lease term 8 years 11 months  
Weighted-average discount rate 8.40%