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Inventories - Additional Infomation (Detail) (USD $) | Jan. 31, 2014 | Jan. 31, 2013 | Jan. 31, 2014 Miltope Ruggedized Printer Product Line Operation [Member] | Jan. 22, 2014 Miltope Ruggedized Printer Product Line Operation [Member]
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Inventory demonstration equipment | $ 767,000 | $ 812,000 |  |
Inventory related to acquisition |  |  | $ 2,500,000 | $ 2,503,000

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- Definition Inventory demonstration equipment. + References No definition available. + Details
Name: | alot_InventoryDemonstrationEquipment
Namespace Prefix: | alot_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The amount of inventory recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant