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Line of Credit (Details) (USD $) | 12 Months Ended |  |
--- | --- | --- | ---
Jan. 31, 2012 | Jan. 31, 2013 Revolving line of credit [Member] | Jan. 31, 2012 Revolving line of credit [Member]
Line of Credit (Textual) [Abstract] |  |  |
Revolving line of credit |  | $ 0 | $ 5,000,000
Line of credit basis spread on base rate | 0.75% |  |
Line of credit basis spread on London interbank offered rate | 1.50% |  |

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- Definition Line of credit basis points below the base rate. + References No definition available. + Details
Name: | alot_LineOfCreditBasisSpreadOnBaseRate
Namespace Prefix: | alot_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Line of Credit Basis Points above LIBOR. + References No definition available. + Details
Name: | alot_LineOfCreditBasisSpreadOnLondonInterbankOfferedRate
Namespace Prefix: | alot_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any 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_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant