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Schedule of Stockholders' Equity Note, Warrants or Rights, Activity (Details) (USD $) | 6 Months Ended
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Mar. 31, 2015
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 1 | $ 9,149,479 avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroThreeZeroRGcTwoxBQDSevenZero
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 2 | 0.75 avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeropKCPxwHTwowmBz
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 3 | (2,700,513)avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroTnZLTwoSixOneNHFourNy
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 4 | 0.75 avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroTwoqfgBFournMXLkEight
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 5 | 68,466,666 avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroTOnecMSNinefSvSevenFoury
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 6 | 0.36 avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeromqcJMryNineMKTwoB
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 7 | 74,915,632 avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroWHSixxvTBwyTwoMC
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 8 | 0.40 avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroNpqqyNinegFournmGv
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 9 | (250,000)avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroSevenQZeroZWSixZMxSevenSL
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 10 | 0.19 avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroNdOneBKlMRbFVt
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 11 | 4,300,000 avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroOneccsBxThreeFNineHrh
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 12 | 0.35 avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroNinelGFourMvRvwFSC
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 13 | $ 78,965,632 avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroDGSevenThreewZerostFourQgk
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 14 | 0.40 avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroQTwoThreedLCZeroSevenNNmT

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- Definition Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 13 + References No definition available. + Details
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