Quarterly report pursuant to Section 13 or 15(d)

Contractual Obligations (Additional Information) (Detail)

v3.8.0.1
Contractual Obligations (Additional Information) (Detail) - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Commitment Contingencies Disclosure [Line Items]    
Operating Leases, Rent Expense $ 112,896 $ 110,369