Organization and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands |
1 Months Ended | 3 Months Ended | 6 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|
May 31, 2016 |
Sep. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Schedule of Organization and Summary of Significant Accounting Policies [Line Items] | ||||||||
| Fair Value Adjustment of Warrants | $ (110) | $ (1,185) | $ (106) | $ (4,464) | ||||
| Cash and Cash Equivalents, at Carrying Value, Total | $ 19,305 | $ 11,499 | $ 19,305 | $ 11,499 | $ 7,857 | $ 15,470 | ||
| Stockholders' Equity, Reverse Stock Split | Board effected the Reverse Split of the outstanding shares of our common stock with the result that every five and one-half (5.5) outstanding shares of common stock before the Reverse Split represents one (1) share of common stock after the Reverse Split | 1 for 5.5 reverse stock split effected in September 2015. | ||||||
| Revenue Recognition, Milestone Method, Revenue Recognized | $ 15,000 | |||||||