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Line of Credit and Note Receivable - Additional Information (Detail) (USD $) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 03, 2013 Installment | Jan. 31, 2013 | Jan. 30, 2012
Credit Facilities [Line Items] |  |  |
Net sales price |  | $ 18,600,000 | $ 1,000,000
United States prime and interest commencement date | Jan. 30, 2013 |  |
Promissory note interest rate | 6.00% |  |
Interest installments | 16 |  |
Revolving Credit Facility [Member] |  |  |
Credit Facilities [Line Items] |  |  |
Revolving line of credit | 600,000 |  |
Extended revolving line of credit | $ 300,000 |  |
Prime Rate [Member] |  |  |
Credit Facilities [Line Items] |  |  |
Interest rate on outstanding credit balance | 0.50% |  |
Prime Rate [Member] | Revolving Credit Facility [Member] |  |  |
Credit Facilities [Line Items] |  |  |
Interest rate on outstanding credit balance | 2.00% |  |

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- Details
Name: | alot_CreditFacilitiesLineItems
Namespace Prefix: | alot_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Loan receivable date considered for interest payments. + References No definition available. + Details
Name: | alot_LoanReceivableDateConsideredForInterestPayments
Namespace Prefix: | alot_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- Definition Loan receivable interest rate stated percentage. + References No definition available. + Details
Name: | alot_LoanReceivableInterestRateStatedPercentage
Namespace Prefix: | alot_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Payable period for interest on note receivable. + References No definition available. + Details
Name: | alot_PayablePeriodForInterestOnNoteReceivable
Namespace Prefix: | alot_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Revolving line of credit facility issued amount outstanding. + References No definition available. + Details
Name: | alot_RevolvingLineOfCreditFacilityIssuedAmountOutstanding
Namespace Prefix: | alot_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Revolving line of credit facility issued maximum capacity. + References No definition available. + Details
Name: | alot_RevolvingLineOfCreditFacilityIssuedMaximumCapacity
Namespace Prefix: | alot_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The percentage points (also referred to as 'margin') added to the reference rate as stated in the loan agreement and used to compute the variable rate on the loans receivable. For instance, the loan agreement might state that the interest rate the borrower is obligated to pay is the London Interbank Offered Rate (LIBOR) plus three quarters (3/4) of a percentage point adjusted quarterly (each three months). LIBOR in this example is the index or reference rate, 3/4 percentage point is the margin, the reference rate plus the margin is the fully indexed rate. This element would be used to report separately the margin. + References No definition available. + Details
Name: | us-gaap_LoansReceivableBasisSpreadOnVariableRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromDivestitureOfBusinesses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration