Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies (Details)

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Organization and Summary of Significant Accounting Policies (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Schedule of Organization and Summary of Significant Accounting Policies [Line Items]        
Total warrant liability at December 31, 2013     $ 1,817  
Adjustment to record warrants at fair value 284 (5,362) 1,148 (2,317)
Total warrant liability at June 30, 2014 $ 2,965   $ 2,965