Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies (Details Textual)

v2.4.0.8
Organization and Summary of Significant Accounting Policies (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Schedule of Organization and Summary of Significant Accounting Policies [Line Items]            
Non-cash (gain) loss on changes in fair value of warrants $ 284 $ (5,362) $ 1,148 $ (2,317)    
Cash and Cash Equivalents, at Carrying Value $ 8,853 $ 11,176 $ 8,853 $ 11,176 $ 11,798 $ 18,102