Allocation (Details Textual) - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
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| Allocated Share-based Compensation Expense | $ 0 | $ 70,000 | $ 200,000 | $ 200,000 |
| IPO [Member] | ||||
| Allocated Share-based Compensation Expense | $ 600,000 | |||
| Research and Development Expense [Member] | ||||
| Share Based Compensation Allocation Percentage | 50.00% | |||
| General and Administrative Expense [Member] | ||||
| Share Based Compensation Allocation Percentage | 50.00% | |||
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- Definition The percentage of share based compensation expenses allocated to research and development and general and administrative expenses. 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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