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16. QUARTERLY INFORMATION (Details) - USD ($)
 3 Months Ended 12 Months Ended
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2014
Quarterly Information Details                      
Grant income and other $ 101,329 $ 129,975 $ 32,775 $ 20,976 $ (66,304) $ 389,223 $ 197,620 $ 136,838 $ 285,055 $ 657,377 $ 264,033
Operating expenses 7,215,072 6,512,722 6,306,378 5,804,108 8,273,682 8,590,698 7,956,963 10,132,579 25,838,280 34,953,922 27,838,145
Non-operating (expense) income, net 23,859 24,679 22,478 1,985 22,369 (15,166) (14,097) (12,547) 73,001 (19,441)  
Gain (loss) on derivative instruments 5,975,752 2,508,744 (2,593,730) 8,122,960 (1,526,338) 4,428,780 (4,782,796) 2,162,970 14,013,726 282,616 248,767
Loss on debt extinguishment         0 (620,457) 0 0 0 (620,457) 0
Net loss                 (11,466,498) (34,674,646) (27,366,265)
Net loss available to common shareholders $ (1,114,132) $ (3,849,324) $ (8,844,855) $ 2,341,813 $ (9,843,955) $ (4,429,137) $ (12,556,236) $ (7,845,318) $ (11,466,498) $ (34,674,646) $ (28,483,712)
Net income (loss) per share-basic and diluted $ (0.01) $ (0.03) $ (0.07) $ 0.02         $ (0.09)    
Net loss per share-basic         $ (0.10) $ (0.05) $ (0.17) $ (0.11) (0.09) $ (0.42) $ (0.48)
Net loss per share-diluted         $ (0.10) $ (0.06) $ (0.17) $ (0.14) $ (0.09) $ (0.42) $ (0.49)
Weighted average shares-basic and diluted                 121,655,108 82,519,027 58,804,622
Weighted average shares-basic 134,290,870 124,132,500 118,420,327 109,768,502 97,040,004 83,796,311 75,847,869 73,260,783 121,655,108 82,519,027  
Weighted average shares-diluted 134,290,870 124,132,500 118,420,327 111,639,785 97,040,004 85,134,107 75,847,869 73,260,783 121,655,108 82,519,027