| **Accounts Payable and Accrued Expenses**            | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
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| **Accounts Payable and Accrued Expenses [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Accounts Payable and Accrued Expenses                | 7.  Accounts Payable and Accrued ExpensesThe carrying value of our accounts payable and accrued expenses approximates fair value, as it represents amounts due to vendors and employees which will be satisfied within one year. Accounts payable and accrued expenses at the below dates consisted of the following:  September 30, 2015  December 31, 2014 Legal and professional fees $3,884  $1,063 Accrued consulting and clinical trial costs  2,131   2,662 Accrued payroll and related costs  1,477   1,722 Accounts payable and other  2,335   1,123 Total $9,827  $6,570  |

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| - Definition
The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a),20,24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Subparagraph a -Article 5Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 24 -Article 5
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| - References
No definition available.
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