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Schedule of Deferred Tax Assets and Liabilities (Details) (USD $) | 12 Months Ended
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Sep. 30, 2014
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 1 | 34.00%avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreehlSevengZerolCdxOneRC
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 2 | 34.00%avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreeWCVxbzTgTSJEight
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 3 | $ 8,270,000 avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreeOneJxfGxSixzFourSJy
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 4 | 7,141,000 avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreeThreenJSevenbTwommHNinelH
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 5 | 745,000 avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreeThreecSQywxkThreeMFourg
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 6 | 705,000 avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreedTwoTSXHwZeroxGrx
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 7 | (23,000)avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreeGFRJkfGSwSixOneb
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 8 | (19,000)avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreeKnntFGHdRThreetH
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 9 | 170,000 avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreexOneDFiveSevenSvnmsSZero
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 10 | 34,000 avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreeRRFPxFTyTfzFive
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 11 | 70,000 avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreeFiveSevenEightfqQRpXHSevenp
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 12 | 51,000 avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreelKlVtFlChhTwos
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 13 | 441,000 avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreedWXwrFiveLFourDJCQ
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 14 | 633,000 avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreeTWzynnFPTSqZero
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 15 | (9,673,000)avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreepmKmKkWhxSqN
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 16 | (8,545,000)avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreeTdfpSevenPNQCSrz
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 17 | 0 avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreenmDqyWLSevenzrvNine
Income Taxes Schedule Of Deferred Tax Assets And Liabilities 18 | $ 0 avxl_ScheduleOfDeferredTaxAssetsAndLiabilitiesZeroTwoSixFourOneThreeOneTwoThreeDgWcZeroJThreeVfPBh

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