|
Balance Sheet Components (Accrued Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Balance Sheet Components [Abstract] | ||
| Accrued clinical trials | $ 455 | $ 417 |
| Accrued compensation | 289 | 1,093 |
| Accrued consulting | 237 | 315 |
| Other accrued liabilities | 24 | 77 |
| Accrued liabilities | $ 1,005 | $ 1,902 |