Capital Stock (Details 2)	Mar. 31, 2013
Capital Stock Details 2
Upon exchange of all shares of Series A Preferred Stock currently issued and outstanding	15,000,000
Warrant shares issuable to Platinum upon exercise of common stock warrant upon exchange of Series A preferred stock under the terms of the October 11, 2012 Note Purchase and Exchange Agreement	7,500,000
110% of shares issuable upon conversion of 10% convertible Exchange Note and Investment Notes issued to Platinum in October 2012, February 2013 and March 2013, including interest accrued through maturity (2)	9,747,422
Pursuant to warrants to purchase common stock:
Subject to outstanding warrants	14,660,335
Issuable pursuant to accrued interest through maturity on outstanding promissory notes issued to Morrison & Foerster, Cato Research Ltd., and University Health Network	1,196,427
Pursuant to warrants to purchase common stock, total	15,856,762
Pursuant to stock incentive plans:
Subject to outstanding options under the 2008 and 1999 Stock Incentive Plans	4,912,604
Available for future grants	257,867
Pursuant to stock incentive plans, total	5,170,471
Upon sales of additional Units pursuant to the 2012 Private Placement of Units	15,414,583
Total	68,689,238