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Nature of Operations, Segment Reporting and Geographical Information - Net Sales and Segment Operating Profit for Each Reporting Segment (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Jan. 31, 2014
Segment Reporting Information [Line Items]
Net Sales	$ 88,347us-gaap_SalesRevenueNet	$ 68,592us-gaap_SalesRevenueNet
Corporate Expenses	29,746us-gaap_OperatingExpenses	25,450us-gaap_OperatingExpenses
Operating Income	7,231us-gaap_OperatingIncomeLoss	1,533us-gaap_OperatingIncomeLoss
Other Expense	299us-gaap_OtherNonoperatingExpense	121us-gaap_OtherNonoperatingExpense
Segment Operating Profit % of Net Sales	14.60%alot_PercentageOfOperatingProfitToNetSales	11.40%alot_PercentageOfOperatingProfitToNetSales
Income from Continuing Operations before Income Taxes	6,932us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1,412us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income Tax Provision for Continuing Operations	2,270us-gaap_IncomeTaxExpenseBenefit	175us-gaap_IncomeTaxExpenseBenefit
Income from Continuing Operations	4,662us-gaap_IncomeLossFromContinuingOperations	1,237us-gaap_IncomeLossFromContinuingOperations
Income from Discontinued Operations, Net of Taxes		1,975us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
Net Income	4,662us-gaap_NetIncomeLoss	3,212us-gaap_NetIncomeLoss
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating Income	12,886us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember	7,809us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Operating Segments [Member] | QuickLabel [Member]
Segment Reporting Information [Line Items]
Net Sales	59,779us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = alot_QuickLabelMember	49,065us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = alot_QuickLabelMember
Operating Income	7,259us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = alot_QuickLabelMember	5,154us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = alot_QuickLabelMember
Segment Operating Profit % of Net Sales	12.10%alot_PercentageOfOperatingProfitToNetSales / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = alot_QuickLabelMember	10.50%alot_PercentageOfOperatingProfitToNetSales / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = alot_QuickLabelMember
Operating Segments [Member] | T&M [Member]
Segment Reporting Information [Line Items]
Net Sales	28,568us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = alot_TestAndMeasurementMember	19,527us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = alot_TestAndMeasurementMember
Operating Income	5,627us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = alot_TestAndMeasurementMember	2,655us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = alot_TestAndMeasurementMember
Segment Operating Profit % of Net Sales	19.70%alot_PercentageOfOperatingProfitToNetSales / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = alot_TestAndMeasurementMember	13.60%alot_PercentageOfOperatingProfitToNetSales / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = alot_TestAndMeasurementMember
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Product Replacement Costs		672alot_ProductReplacementRelatedCosts / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Corporate Expenses	$ 5,655us-gaap_OperatingExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember	$ 5,604us-gaap_OperatingExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember

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