Liquidity and Management's Plans - Additional Information (Detail) - USD ($) shares in Millions |
Mar. 15, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|---|---|
| Bankruptcy [Line Items] | ||||
| Cash and cash equivalents | $ 6,885,422 | $ 601,445 | $ 365,161 | |
| Restricted Stock Units (RSUs) [Member] | Subsequent Event [Member] | ||||
| Bankruptcy [Line Items] | ||||
| Number of vested RSU awards | 26.5 |