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Summary of Significant Accounting Policies (Details) (USD $)
1 Months Ended 3 Months Ended 9 Months Ended
Mar. 31, 2011
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Grant Revenue          
Amount of grant awarded $ 1,000,000        
Grant revenues   $ 0 $ 0 $ 0 $ 147,000