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Weighted Average Common Shares (Details)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Basic Common Shares 74,351,065 68,457,885 47,335,571
Effect of dilutive stock-based awards   637,081  
Effect of dilutive warrants   200,981  
Weighted Average Number of Shares Outstanding, Diluted, Total 74,351,065 69,295,947 47,335,571
Class of Warrant or Right, Outstanding 19,977,743 15,850,238 16,138,480
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 3,102,500 3,195,000 2,588,661
Warrants [Member]
     
Class of Warrant or Right, Outstanding 19,977,743 15,219,802  
Stock Options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 3,102,500 1,810,000