Quarterly report pursuant to Section 13 or 15(d)

Right-of-Use Assets and Liabilities (Additional informaton) (Detail)

v3.19.1
Right-of-Use Assets and Liabilities (Additional informaton) (Detail) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Operating Leases, Rent Expense, Net $ 140,300 $ 112,896
Operating Lease, Weighted Average Remaining Lease Term 1 year 8 months 12 days  
Operating Lease, Weighted Average Discount Rate, Percent 5.00%