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Operating Leases - Future Minimum Lease Payments under Operating Leases (Detail)
Jun. 30, 2017
USD ($)
Leases [Abstract]  
Remainder of 2017 $ 293,175
2018 586,350
2019 595,807
2020 624,179
2021 624,179
Thereafter 1,716,000
Total future lease payments due $ 4,439,690