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Supplemental Cash Flow Information (Narrative) (Details) (USD $)	3 Months Ended
	Dec. 31, 2014
Supplemental Cash Flow Information 1	5,604,668avxl_SupplementalCashFlowInformationZeroTwoSixEightEightZeroKVTwoZerokyMSxbnNine
Supplemental Cash Flow Information 2	$ 1,049,855avxl_SupplementalCashFlowInformationZeroTwoSixEightEightZeroFournTwocHczqGrtZ
Supplemental Cash Flow Information 3	$ 0.25avxl_SupplementalCashFlowInformationZeroTwoSixEightEightZerokVFourOnekNGThreeWHRx
Supplemental Cash Flow Information 4	$ 221,000avxl_SupplementalCashFlowInformationZeroTwoSixEightEightZerolJlCOneWQLkXnl

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