Quarterly report pursuant to Section 13 or 15(d)

Contractual Obligations (Additional Information) (Detail)

v3.10.0.1
Contractual Obligations (Additional Information) (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Commitment Contingencies Disclosure [Line Items]        
Operating Leases, Rent Expense $ 117,372 $ 115,718 $ 349,168 $ 344,227