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Note Receivable and Line of Credit Issued - Additional Information (Detail) |  | 3 Months Ended |
--- | --- | --- | ---
Jan. 30, 2012 USD ($) | Apr. 30, 2016 USD ($) Installment | Jan. 31, 2016 USD ($)
Receivables [Abstract] |  |  |
Net sale price | $ 1,000,000 |  |
Promissory note interest rate | 3.75% |  |
Interest commencement date |  | Jan. 30, 2013 |
Interest installments | Installment |  | 16 |
Revolving line of credit issued maximum |  | $ 600,000 |
Interest rate on outstanding credit balance |  | 2.00% |
Line of credit facility maturity date |  | Jan. 31, 2017 |
Extended revolving line of credit |  | $ 150,000 | $ 150,000

X
- Definition Initial sales price of operation sold received in the form of a Promissory Note. + References No definition available. + Details
Name: | alot_DebtReceivedUponSaleOfOperation
Namespace Prefix: | alot_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The current portion of the line of credit issued to purchaser of the Label Line business. + References No definition available. + Details
Name: | alot_LineOfCreditReceivableCurrent
Namespace Prefix: | alot_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Initial date that interest was to commence on the Note Receivable. + References No definition available. + Details
Name: | alot_LoanReceivableDateConsideredForInterestPayments
Namespace Prefix: | alot_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- 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

X
- Definition Number of installment payments of principal and interest to be made on the Note Receivable. + References No definition available. + Details
Name: | alot_NumberOfInstallments
Namespace Prefix: | alot_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- 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

X
- 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 + Details
Name: | us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- 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

X
- References No definition available. + Details
Name: | us-gaap_ReceivablesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration