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Acquisition - Fair Value of the Acquired Identifiable Intangible Assets and Related Estimated Useful Lives (Detail) (Miltope's Ruggedized Printer Product Line Operation [Member], USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Jan. 31, 2015
Jan. 22, 2014
Acquired Finite-Lived Intangible Assets [Line Items]    
Fair Value $ 3,400us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill $ 3,400us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
Customer Contract Relationships [Member]
    
Acquired Finite-Lived Intangible Assets [Line Items]    
Fair Value 3,100us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= alot_MiltopeRuggedizedPrinterProductLineOperationMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember		  
Useful Life 10 years  
Backlog [Member]
    
Acquired Finite-Lived Intangible Assets [Line Items]    
Fair Value $ 300us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= alot_MiltopeRuggedizedPrinterProductLineOperationMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_OrderOrProductionBacklogMember		  
Useful Life 1 year