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Line of Credit - Additional Information (Detail) (USD $) | 12 Months Ended
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Jan. 31, 2015
Line of Credit Facility [Line Items] |
Agreement expiration date | Jan. 31, 2015
Agreement term | 1 year
Wells Fargo Bank [Member] |
Line of Credit Facility [Line Items] |
Agreement expiration date | May 30, 2014
Revolving line of credit | 10,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_LineOfCreditFacilityAxis = alot_WellsFargoBankMember
Agreement term | 3 years
Line of credit, interest rate description | Any borrowings made under the new line of credit bear interest at either a fluctuating base rate equal to the highest of (i) the Prime Rate, (ii) 1.50% above the daily one month LIBOR, and (iii) the Federal Funds Rate in effect plus 1.50% or at a fixed rate of LIBOR plus an agreed upon margin of between 0% and 2.25%, based on the Company's funded debt to EBITDA ratio as defined in the agreement.
Borrowings against new line of credit | 0 us-gaap_LineOfCreditFacilityAverageOutstandingAmount / us-gaap_LineOfCreditFacilityAxis = alot_WellsFargoBankMember
Fixed Charge Coverage Ratio | 3 alot_FixedChargeCoverageRatio / us-gaap_LineOfCreditFacilityAxis = alot_WellsFargoBankMember
Funded debt to adjusted EBITDA ratio | 1.25 alot_FundedDebtToAdjustedEbitdaRatio / us-gaap_LineOfCreditFacilityAxis = alot_WellsFargoBankMember
Wells Fargo Bank [Member] | London Interbank Offered Rate (LIBOR) [Member] |
Line of Credit Facility [Line Items] |
Percentage above rate | 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LineOfCreditFacilityAxis = alot_WellsFargoBankMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember
Wells Fargo Bank [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] |
Line of Credit Facility [Line Items] |
Percentage above rate | 0.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LineOfCreditFacilityAxis = alot_WellsFargoBankMember / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember
Wells Fargo Bank [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] |
Line of Credit Facility [Line Items] |
Percentage above rate | 2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LineOfCreditFacilityAxis = alot_WellsFargoBankMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember
Wells Fargo Bank [Member] | Federal Funds Effective Swap Rate [Member] |
Line of Credit Facility [Line Items] |
Percentage above rate | 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_LineOfCreditFacilityAxis = alot_WellsFargoBankMember / us-gaap_VariableRateAxis = us-gaap_FederalFundsEffectiveSwapRateMember

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- Definition Fixed Charge Coverage Ratio + References No definition available. + Details
Name: | alot_FixedChargeCoverageRatio
Namespace Prefix: | alot_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

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- Definition Funded Debt to Adjusted EBITDA Ratio + References No definition available. + Details
Name: | alot_FundedDebtToAdjustedEbitdaRatio
Namespace Prefix: | alot_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Average amount borrowed under the credit facility during the period. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityAverageOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- Definition Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityExpirationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityInterestRateDescription
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_LineOfCreditFacilityAxis=alot_WellsFargoBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |