Commitments - Additional Information (Detail) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Commitments And Contingencies Disclosure [Abstract] | ||
| Lease commencement date | Dec. 01, 2013 | |
| Lease amendment date | 2015-10 | |
| Lease expiry date | Dec. 31, 2016 | |
| Rent expense | $ 81,381 | $ 81,086 |
| Future minimum operating lease payment due in 2016 | $ 113,000 | |