XML 37 R18.htm IDEA: XBRL DOCUMENT
v3.19.1

Commitments (Details) - $ / shares | 6 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] |  |
Exercised | 1,250 |
Purchase Warrants [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] |  |
Balance, at beginning | 678,379 | 1,609,309
Issued |  | 350,000
Exercised | (1,250) | (756,143)
Expired | (307,129) | (524,787)
Balance, at end | 370,000 | 678,379
Share based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Exercise Price [Roll Forward] |  |
Balance, at beginning | $ 2.87 | $ 2.66
Issued |  | 4.19
Exercised | 1.68 | 2.96
Expired | 1.47 | 3.00
Balance, at end | $ 4.03 | $ 2.87

X
- Definition The number of exercised in period made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References No definition available. + Details
Name: | avxl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriod
Namespace Prefix: | avxl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents information related to share based compensation arrangement by share based payment award equity instruments other than options expired in period. + References No definition available. + Details
Name: | avxl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpiredInPeriod
Namespace Prefix: | avxl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents information related to share based compensation arrangement by share based payment award equity instruments other than options expired in period. + References No definition available. + Details
Name: | avxl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedInPeriod
Namespace Prefix: | avxl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Information related to share based compensation arrangement by share based payment award equity instruments other than options outstanding weighted average exercise price. + References No definition available. + Details
Name: | avxl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix: | avxl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Information related to share based compensation arrangement by share based payment award equity instruments other than options outstanding weighted average exercise price. + References No definition available. + Details
Name: | avxl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePriceRollforward
Namespace Prefix: | avxl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Information related to share based compensation arrangements by share based payment award equity instruments other than options exercised in period weighted average exercise price. + References No definition available. + Details
Name: | avxl_ShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodWeightedAverageExercisePrice
Namespace Prefix: | avxl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents information related to share based compensation arrangements by share based payment award equity instruments other than options exercised in period weighted average expired price. + References No definition available. + Details
Name: | avxl_ShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodWeightedAverageExpiredPrice
Namespace Prefix: | avxl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents information related to share based compensation arrangements by share based payment award equity instruments other than options exercised in period weighted average issued price. + References No definition available. + Details
Name: | avxl_ShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodWeightedAverageIssuedPrice
Namespace Prefix: | avxl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=avxl_PurchaseWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |