Stock-Based Compensation - Additional Information (Detail) - USD ($) |
3 Months Ended | |
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Mar. 31, 2016 |
Mar. 31, 2015 |
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| Stock Based Compensation [Line Items] | ||
| Stock based compensation expense | $ 368,383 | $ 217,335 |
| Number of shares, Options exercised | 0 | 0 |
| Weighted average grant date fair value | $ 1.00 | $ 1.86 |
| Pieris Plan [Member] | Employees Consultants And Directors [Member] | ||
| Stock Based Compensation [Line Items] | ||
| Number of shares, Options granted | 1,068,881 | 25,000 |
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- Definition Stock Based Compensation [Line Items] No definition available.
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Gross number of share options (or share units) granted during the period. No definition available.
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- Definition Weighted average grant-date fair value of options vested. No definition available.
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- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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