Quarterly report pursuant to Section 13 or 15(d)

Warrants (Summary Of Changes In Warrants Outstanding During The Period) (Details)

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Warrants (Summary Of Changes In Warrants Outstanding During The Period) (Details) (USD $)
0 Months Ended 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 04, 2012
Mar. 31, 2011
Jun. 30, 2010
Oct. 23, 2009
Jun. 09, 2009
Dec. 18, 2007
Dec. 31, 2010
Nov. 30, 2010
May 31, 2010
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Dec. 31, 2011
Warrants [Abstract]                          
Number of warrants, Outstanding                   21,656,142 8,676,142 8,676,142  
Weigted average exercise price, Outstanding                   $ 0.89 $ 1.53 $ 0.89 $ 1.53
Number of warrants, Issued 10,521,739 3,333,333 2,000,000 2,125,334 862,246 107,144              
Number of warrants, Exercised             (530,900) (936,883) (890,051)        
Number of warrants, Outstanding                   21,656,142 8,676,142 21,656,142 8,676,142
Weigted average exercise price, Outstanding                   $ 0.89 $ 1.53 $ 0.89 $ 1.53