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

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