Income Taxes - Additional Information (Detail) - USD ($) |
1 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Nov. 30, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
Dec. 31, 2015 |
|
| Income Tax [Line Items] | ||||
| Proceeds from sale of operating loss carryforwards and tax credits | $ 1,183,564 | |||
| Federal | ||||
| Income Tax [Line Items] | ||||
| Net operating loss carryforward | $ 69,000,000 | |||
| New Jersey | ||||
| Income Tax [Line Items] | ||||
| Net operating loss carryforward | 15,990,475 | $ 28,640,223 | $ 8,018,107 | |
| Proceeds from sale of operating loss carryforwards and tax credits | $ 2,350,185 | $ 663,900 | ||
| Research and Development | ||||
| Income Tax [Line Items] | ||||
| Research and development tax credits | $ 289,978 | |||