Stockholders' Equity (Details 3) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2017 |
Mar. 31, 2016 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Employee Benefits and Share-based Compensation | $ 979 | $ 1,088 |
| Research and Development Expense [Member] | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Employee Benefits and Share-based Compensation | 406 | 767 |
| General and Administrative Expense [Member] | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Employee Benefits and Share-based Compensation | $ 573 | $ 321 |
| X | ||||||||||
- Definition Costs and payments related to employee benefits and equity-based compensation, such as pension expense and contributions, other postretirement benefits expense and payments, stock or unit options expense, and amortization of restricted stock or unit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- 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.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|