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14. NET LOSS PER COMMON SHARE (Details) (USD $)
 3 Months Ended 12 Months Ended
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2011
Net Loss Per Common Share Details                      
Net loss – available to common shareholders                 $ (9,230,478) $ (17,645,930) $ (26,780,712)
Less: Gain on derivative instruments                 (10,750,666) (1,911,683) (4,199,256)
Net loss - diluted                 $ (19,981,144) $ (19,557,613) $ (30,979,968)
Weighted average number of shares - basic and diluted 30,994,932 30,930,650 30,901,177 28,311,602 27,297,495 25,846,758 24,736,959 22,856,844 30,279,442 25,183,654 20,848,899
Earnings per share - basic $ (0.05) $ (0.15) $ (0.02) $ (0.08) $ (0.09) $ (0.03) $ (0.41) $ (0.18) $ (0.30) $ (0.70) $ (1.28)
Earnings per share - diluted $ (0.16) $ (0.18) $ (0.14) $ (0.18) $ (0.16) $ (0.16) $ (0.41) $ (0.22) $ (0.66) $ (0.78) $ (1.49)