XML 12 R39.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Income Taxes (Narrative) (Details) (USD $) | 12 Months Ended
--- | ---
Sep. 30, 2013
Income Taxes 1 | $ 21,022,000
Income Taxes 2 | $ 20,196,000

X
- Definition Income Taxes 2 + References No definition available. + Details
Name: | avxl_IncomeTaxesZeroOneNineFourZeroZeroJZerodpPSevenFourxtLst
Namespace Prefix: | avxl_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Income Taxes 1 + References No definition available. + Details
Name: | avxl_IncomeTaxesZeroOneNineFourZeroZeroZeroEightMBJvFiveEightMEightNineSeven
Namespace Prefix: | avxl_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration