|
Income Taxes (Details 2) (USD $)
|
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
|
| Income Tax [Line Items] | ||
| Valuation allowance | $ 42,055,000 | $ 38,406,000 |
| Change in valuation | 10,485,000 | 3,649,000 |
| Valuation allowance | 39,559,000 | 42,055,000 |
| Establisment and reversal in 2014 - Convertible Bridge notes [Member] | ||
| Income Tax [Line Items] | ||
| Valuation allowance | 897,000 | |
| Establishment in 2014 - Deerfield note [Member] | ||
| Income Tax [Line Items] | ||
| Valuation allowance | $ (13,878,000) | |