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Schedule of Stockholders' Equity Note, Warrants or Rights (Details) (USD $) | 6 Months Ended | 12 Months Ended
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Mar. 31, 2015 | Sep. 30, 2014
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 1 |  | $ 6,448,966avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoSixFourOneThreeOneTwoThreelOnehTdWSixtpgJOne
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 2 |  | 0.75avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoSixFourOneThreeOneTwoThreeVTfTHnvpZerodkW
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 3 |  | 500,000avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoSixFourOneThreeOneTwoThreeKTpFourQdSCNinehnJ
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 4 |  | 0.75avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoSixFourOneThreeOneTwoThreeZerobmSixzFNineJhTwoyF
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 5 |  | 120,000avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoSixFourOneThreeOneTwoThreedQwmsXSevenQtprR
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 6 |  | 1.00avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoSixFourOneThreeOneTwoThreeNgvNXBgCQRfEight
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 7 |  | 33,833,333avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoSixFourOneThreeOneTwoThreeWVVOneBXszTwSh
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 8 |  | 0.30avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoSixFourOneThreeOneTwoThreewHVcNZLNGGNineNine
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 9 |  | 33,833,333avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoSixFourOneThreeOneTwoThreeZWwctSQQmJNf
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 10 |  | 0.42avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoSixFourOneThreeOneTwoThreeMkwNFiveTwoTVZBtm
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 11 |  | 180,000avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoSixFourOneThreeOneTwoThreeEightDWTXNsJlFourFourh
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 12 |  | 0.31avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoSixFourOneThreeOneTwoThreeLPrQzxlZHdlJ
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 13 |  | 74,915,632avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoSixFourOneThreeOneTwoThreeSevenZeroTwoCSRWThnzD
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 1 | 6,448,966avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZeroTWPOneRFourtpThreeMdSix |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 2 | 0.75avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZerowbThreetxPzVrcLf |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 3 | 500,000avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZeroldbNinetpKNhZDQ |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 4 | 0.75avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZerogQKnhZeroyzTOnepv |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 5 | 120,000avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZeroTKxhlmZeroFSMzp |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 6 | 1.00avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZerofJzHZeromGDhZHw |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 7 | 33,833,333avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZeroTFourcwOnesfTwoKyml |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 8 | 0.30avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZerofFivetqbFrPOneCbb |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 9 | 33,833,333avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZeroNineCNinexSixNineVLSSnThree |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 10 | 0.42avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZerobWKOneEightvThreeyPBfd |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 11 | 180,000avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZeroRlFiveSixEightVHbsrEightFour |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 12 | 0.31avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZeroykqXTbJTGXkt |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 13 | 2,000,000avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZeroBSevenQpxVrtPXZeroR |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 14 | 0.30avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZeroLCFlGTEightSevenXRZeroD |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 15 | 2,000,000avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZeroCbKxrNineTwoZbOneJG |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 16 | 0.42avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZerowlCOnekHDXhVTv |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 17 | 50,000avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZeroFiveXJTXEightsGMfzk |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 18 | 0.31avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZeroJBDmOneRygQNfS |
Commitments Schedule Of Stockholders' Equity Note, Warrants Or Rights 19 | $ 78,965,632avxl_ScheduleOfStockholdersaposEquityNoteWarrantsOrRightsZeroTwoEightOneOneZeroJbMvMCFmsmdF |

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