XML 31 R62.htm IDEA: XBRL DOCUMENT v2.4.0.6
Outstanding warrants to purchase common stock (Details)
Dec. 31, 2012
Dec. 31, 2011
Number of Shares of warrants 607,776 624,442
Common stock financing
   
Number of Shares of warrants 57,776 74,442
Price Per Share 1.8 1.8
Issue Date 2009-05 2009-05
Expiration Date 2014-05 2014-05
Senior convertible note financing
   
Number of Shares of warrants 550,000 550,000
Price Per Share 2.44 2.44
Issue Date 2010-11 2010-11
Expiration Date 2016-05 2016-05