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Subsequent Events (Narrative) (Details) (USD $)
 6 Months Ended
Mar. 31, 2015
Y
Subsequent Events 1 2,875,000avxl_SubsequentEventsZeroTwoEightOneOneZeroNtZSFiveKLxNineTzB
Subsequent Events 2 $ 0.23avxl_SubsequentEventsZeroTwoEightOneOneZeroSevenDXHWpcwZBEightN
Subsequent Events 3 10avxl_SubsequentEventsZeroTwoEightOneOneZeroFhsmSevenSevenmfOneThreeSSix
Subsequent Events 4 4,378,954avxl_SubsequentEventsZeroTwoEightOneOneZeroRSwwwJFcTcTwoH
Subsequent Events 5 $ 0.30avxl_SubsequentEventsZeroTwoEightOneOneZeroWFFtFiveCmQVdTNine