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v3.22.1

Royalty Obligation - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Apr. 30, 2022 | Jan. 31, 2022 | Jan. 31, 2018
Guaranteed Minimum Royalty Payment | $ 8,500 |  |
Royalty Obligation, Current | 2,000 | $ 2,000 |
Royalty Obligation Non Current | 3,923 | 4,361 |
Excess Royalties paid | 200 |  |
Accrued Royalties, Current, Excess Royalty Payment Due | $ 311 | $ 235 |
Honeywell Asset Purchase and License Agreement [Member] |  |  |
Payment Term Period | 10 years |  |
Minimum Royalty Payment Obligation |  |  | $ 15,000
Fair Value Assumption Percentage Of Present Value Factor | 2.80% |  |
Royalty Obligation, Current | $ 2,000 |  |
Royalty Obligation Non Current | 3,900 |  |
Excess Royalty Payments | 300 |  |
Accrued Royalties, Current, Excess Royalty Payment Due | $ 300 |  |

X
- Definition Accrued royalties in excess of guaranteed minimum royalty obligation- amount due within one year. + References No definition available. + Details
Name: | alot_AccruedRoyaltiesCurrentExcessRoyaltyPaymentDue
Namespace Prefix: | alot_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Excess Royalties paid. + References No definition available. + Details
Name: | alot_ExcessRoyaltiesPaid
Namespace Prefix: | alot_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of royalty expense paid in excess of guaranteed minimum payments. + References No definition available. + Details
Name: | alot_ExcessRoyaltyPayments
Namespace Prefix: | alot_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair Value Assumption Percentage Of Present Value Factor + References No definition available. + Details
Name: | alot_FairValueAssumptionPercentageOfPresentValueFactor
Namespace Prefix: | alot_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Guaranteed minimum royalty payment. + References No definition available. + Details
Name: | alot_GuaranteedMinimumRoyaltyPayment
Namespace Prefix: | alot_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Minimum Royalty Payment Obligation. + References No definition available. + Details
Name: | alot_MinimumRoyaltyPaymentObligation
Namespace Prefix: | alot_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Payment term period. + References No definition available. + Details
Name: | alot_PaymentTermPeriod
Namespace Prefix: | alot_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount of the short term portion of the guaranteed minimum royalty obligation related to Honeywell Agreement. + References No definition available. + Details
Name: | alot_RoyaltyObligationCurrent
Namespace Prefix: | alot_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of the long term portion of the guaranteed minimum royalty obligation related to Honeywell Agreement. + References No definition available. + Details
Name: | alot_RoyaltyObligationNonCurrent
Namespace Prefix: | alot_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=alot_HoneywellAssetPurchaseAndLicenseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |