Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies (Details Textual)

v3.7.0.1
Organization and Summary of Significant Accounting Policies (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
May 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Schedule of Organization and Summary of Significant Accounting Policies [Line Items]      
Change in fair value of warrant liability   $ (422) $ (4)
Investments, Fair Value Disclosure   $ 10,900  
Revenue Recognition, Milestone Method, Revenue Recognized $ 15,000