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Share-Based Compensation - Share-Based Compensation Expense (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2015	Jan. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, Total	$ 511us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax	$ 562us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, Total	241us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember	192us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember
Restricted Stock Awards and Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, Total	$ 270us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax / us-gaap_AwardTypeAxis = alot_RestrictedStockAwardsAndRestrictedStockUnitsMember	$ 370us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax / us-gaap_AwardTypeAxis = alot_RestrictedStockAwardsAndRestrictedStockUnitsMember

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- Definition

The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

No definition available.

+ Details

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- Details

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- Details

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X

- Details

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