Stock-Based Compensation - Stock-Based Compensation Expense (Details) - USD ($) |
3 Months Ended | |
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Mar. 31, 2017 |
Mar. 31, 2016 |
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| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
| Total stock-based compensation | $ 332,219 | $ 937,308 |
| Research and development | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
| Total stock-based compensation | 48,852 | 23,442 |
| General and administrative | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
| Total stock-based compensation | $ 283,367 | $ 913,866 |
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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 Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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