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Stock-Based Compensation (Summary Of Stock Compensation Expense) (Details) (USD $)
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3 Months Ended | 6 Months Ended | 147 Months Ended | ||
|---|---|---|---|---|---|
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | |||||
| Share Based Compensation | $ 54,371 | $ 50,752 | $ 426,322 | $ 141,926 | $ 6,234,938 |
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General and administrative, Payroll [Member]
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | |||||
| Share Based Compensation | 40,535 | 34,848 | 390,914 | 74,165 | 3,012,343 |
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General and administrative, Consulting and other professional fees [Member]
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|||||
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | |||||
| Share Based Compensation | (727) | 3,893 | 22,495 | 814,348 | |
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Research and development, Payroll [Member]
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|||||
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | |||||
| Share Based Compensation | 13,836 | 20,469 | 29,568 | 40,967 | 1,077,625 |
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Research and development, Consulting and other professional fees [Member]
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|||||
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | |||||
| Share Based Compensation | $ (3,838) | $ 1,947 | $ 4,299 | $ 1,330,622 | |