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Fair Value of the Purchaser and Non-Purchaser Warrants at Issuance (Details) (USD $) | 12 Months Ended
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Sep. 30, 2014
Amendment Agreements [Member] |
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Non-interest Bearing Liabilities Fair Value Of The Purchaser And Non-purchaser Warrants At Issuance 2 | 29.58 avxl_FairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceZeroTwoSixFourOneThreeOneTwoThreeSixgTPXFmcmEightwy / avxl_NoninterestBearingLiabilitiesAxis = avxl_AmendmentAgreementsMember
Non-interest Bearing Liabilities Fair Value Of The Purchaser And Non-purchaser Warrants At Issuance 3 | 100.71%avxl_FairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceZeroTwoSixFourOneThreeOneTwoThreekWCgOnedxrggEightw / avxl_NoninterestBearingLiabilitiesAxis = avxl_AmendmentAgreementsMember
Non-interest Bearing Liabilities Fair Value Of The Purchaser And Non-purchaser Warrants At Issuance 4 | 0.00%avxl_FairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceZeroTwoSixFourOneThreeOneTwoThreeNCCfWThreeQqXSevenhl / avxl_NoninterestBearingLiabilitiesAxis = avxl_AmendmentAgreementsMember
Embedded conversion options and warrants [Member] |
Non-interest Bearing Liabilities Fair Value Of The Purchaser And Non-purchaser Warrants At Issuance 1 | 3.21%avxl_FairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceZeroTwoSixFourOneThreeOneTwoThreeyFhBQFNineKfSevenJh / avxl_NoninterestBearingLiabilitiesAxis = avxl_EmbeddedConversionOptionsAndWarrantsMember
Non-interest Bearing Liabilities Fair Value Of The Purchaser And Non-purchaser Warrants At Issuance 2 | 0.10%avxl_FairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceZeroTwoSixFourOneThreeOneTwoThreePsflKQPREightbEightFour / avxl_NoninterestBearingLiabilitiesAxis = avxl_EmbeddedConversionOptionsAndWarrantsMember
Non-interest Bearing Liabilities Fair Value Of The Purchaser And Non-purchaser Warrants At Issuance 3 | 29.48 avxl_FairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceZeroTwoSixFourOneThreeOneTwoThreeHSixFourFourZPGdsLNineg / avxl_NoninterestBearingLiabilitiesAxis = avxl_EmbeddedConversionOptionsAndWarrantsMember
Non-interest Bearing Liabilities Fair Value Of The Purchaser And Non-purchaser Warrants At Issuance 4 | 1.25 avxl_FairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceZeroTwoSixFourOneThreeOneTwoThreefNLkwgnSSFHNine / avxl_NoninterestBearingLiabilitiesAxis = avxl_EmbeddedConversionOptionsAndWarrantsMember
Non-interest Bearing Liabilities Fair Value Of The Purchaser And Non-purchaser Warrants At Issuance 5 | 100.07%avxl_FairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceZeroTwoSixFourOneThreeOneTwoThreeKZZeroOneWFourSCgFZP / avxl_NoninterestBearingLiabilitiesAxis = avxl_EmbeddedConversionOptionsAndWarrantsMember
Non-interest Bearing Liabilities Fair Value Of The Purchaser And Non-purchaser Warrants At Issuance 6 | 77.51%avxl_FairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceZeroTwoSixFourOneThreeOneTwoThreesLThreeSWmTBTwoWSevenQ / avxl_NoninterestBearingLiabilitiesAxis = avxl_EmbeddedConversionOptionsAndWarrantsMember
Non-interest Bearing Liabilities Fair Value Of The Purchaser And Non-purchaser Warrants At Issuance 7 | 0.184 avxl_FairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceZeroTwoSixFourOneThreeOneTwoThreeFourTwogTTPtNinerrqThree / avxl_NoninterestBearingLiabilitiesAxis = avxl_EmbeddedConversionOptionsAndWarrantsMember
Non-interest Bearing Liabilities Fair Value Of The Purchaser And Non-purchaser Warrants At Issuance 8 | 0.65 avxl_FairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceZeroTwoSixFourOneThreeOneTwoThreeHHKWqzLwrXhD / avxl_NoninterestBearingLiabilitiesAxis = avxl_EmbeddedConversionOptionsAndWarrantsMember
Non-interest Bearing Liabilities Fair Value Of The Purchaser And Non-purchaser Warrants At Issuance 9 | 0.00%avxl_FairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceZeroTwoSixFourOneThreeOneTwoThreeJTwBlzKzCSpd / avxl_NoninterestBearingLiabilitiesAxis = avxl_EmbeddedConversionOptionsAndWarrantsMember
Non-interest Bearing Liabilities Fair Value Of The Purchaser And Non-purchaser Warrants At Issuance 10 | 0.00%avxl_FairValueOfThePurchaserAndNonpurchaserWarrantsAtIssuanceZeroTwoSixFourOneThreeOneTwoThreegKVSixXTOnefkqvP / avxl_NoninterestBearingLiabilitiesAxis = avxl_EmbeddedConversionOptionsAndWarrantsMember

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