Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Summary Of Stock Compensation Expense) (Details)

v2.4.0.6
Stock-Based Compensation (Summary Of Stock Compensation Expense) (Details) (USD $)
12 Months Ended 141 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share Based Compensation $ 230,987 $ 638,607 $ 5,808,616
Payroll [Member] | General And Administrative [Member]
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share Based Compensation 126,029 501,884 2,621,429
Payroll [Member] | Research And Development [Member]
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share Based Compensation 76,008 95,753 1,048,057
Consulting and other professional fees [Member] | General And Administrative [Member]
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share Based Compensation 23,932 26,566 810,455
Consulting and other professional fees [Member] | Research And Development [Member]
     
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Share Based Compensation $ 5,018 $ 14,404 $ 1,328,675