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Schedule of Stockholders' Equity Note, Warrants or Rights, Activity (Details) (USD $) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2015 | Sep. 30, 2014
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 1 |  | $ 4,250,141avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreedwBThreeGnLZeroNwzH
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 2 |  | 1.16avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreeqsDCmQhkRynB
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 3 |  | (1,549,628)avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreeNtDbbZvJQppn
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 4 |  | 2.56avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreeVzThreeQrlFykgdL
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 5 |  | 6,448,966avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreelOneWvXFiveZtGNineFiveL
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 6 |  | 0.75avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreenNCrbtNinevhHZerop
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 7 |  | 9,149,479avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreeWrpmTWdJQfBNine
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 8 |  | 0.75avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreetBZerolXwwNineFFiveGC
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 9 |  | (2,700,513)avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreeBhbRgpmSixlcfFive
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 10 |  | 0.75avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreeKNineQHByySevenQRNineg
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 11 |  | 68,466,666avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreeDSevenCFourgNineTDFiveHxFive
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 12 |  | 0.36avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreeMZTKqGHZSevenDNn
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 13 |  | 74,915,632avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreefOneTwstSixfksFZero
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 14 |  | 0.40avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoSixFourOneThreeOneTwoThreeNSixWysrQcxThreeZFive
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 1 | 9,149,479avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroThreeZeroRGcTwoxBQDSevenZero |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 2 | 0.75avxl_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 | 0.75avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroTwoqfgBFournMXLkEight |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 5 | 68,466,666avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroTOnecMSNinefSvSevenFoury |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 6 | 0.36avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeromqcJMryNineMKTwoB |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 7 | 74,915,632avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroWHSixxvTBwyTwoMC |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 8 | 0.40avxl_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 | 0.19avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroNdOneBKlMRbFVt |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 11 | 4,300,000avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroOneccsBxThreeFNineHrh |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 12 | 0.35avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroNinelGFourMvRvwFSC |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 13 | $ 78,965,632avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroDGSevenThreewZerostFourQgk |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 14 | 0.40avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsActivityZeroTwoEightOneOneZeroQTwoThreedLCZeroSevenNNmT |

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