Stockholders' Equity (Details 3) - USD ($) $ in Thousands |
12 Months Ended | |
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Dec. 31, 2016 |
Dec. 31, 2015 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Employee Benefits and Share-based Compensation | $ 3,867 | $ 3,252 |
| Research and Development Expense [Member] | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Employee Benefits and Share-based Compensation | 2,557 | 2,987 |
| General and Administrative Expense [Member] | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Employee Benefits and Share-based Compensation | $ 1,310 | $ 265 |
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- 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
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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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