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Share-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended				6 Months Ended		3 Months Ended		6 Months Ended				3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Aug. 03, 2013	May 04, 2013	Jul. 28, 2012	Apr. 28, 2012	Aug. 03, 2013	Jan. 31, 2013	Aug. 03, 2013 Employee Stock Purchase Plan [Member]	Jul. 28, 2012 Employee Stock Purchase Plan [Member]	Aug. 03, 2013 Employee Stock Purchase Plan [Member]	Jul. 28, 2012 Employee Stock Purchase Plan [Member]	Aug. 03, 2013 Officer [Member]	Aug. 03, 2013 Officer [Member] Third Anniversary [Member]	Aug. 03, 2013 Non-Employee Director [Member]	Aug. 03, 2013 Non-Employee Director [Member]	Aug. 03, 2013 2014 Restricted Stock Units (RSUs) [Member]	Aug. 03, 2013 2014 Restricted Stock Units (RSUs) [Member]	Aug. 03, 2013 2014 Restricted Stock Units (RSUs) [Member] First Anniversary [Member]	Aug. 03, 2013 2014 Restricted Stock Units (RSUs) [Member] Second Anniversary [Member]	Aug. 03, 2013 Equity Incentive Plan [Member]	Aug. 03, 2013 Equity Incentive Plan [Member] Non-Employee Director [Member]	Aug. 03, 2013 Restricted Stock [Member] Non-Employee Director [Member]	Aug. 03, 2013 Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period																			4 years	10 years	12 months
Aggregate shares authorized for awards under the plan																			1,000,000
Shares available for grant under the Plan																			356,300
Restricted stock unit vested percentage												25.00%					50.00%	50.00%
Disposal restricted percentage of RSU					50.00%						50.00%
Cumulative budgeted net sales target measurement period											2014 through 2016
Restricted stock unit vested percentage for annual operating income											25.00%
Stock options grant to each non-employee director															7,544				5,000
Number of shares granted to non-employee directors													20,000
Non-employee director is entitled to an annual cash retainer														$ 7,000
Non-employee director is entitled to an annual cash retainer additional														500
Non-employee director received restricted stock award value														20,000
Options granted weighted average fair value per share	$ 2.79	$ 2.79	$ 2.01	$ 2.09
Unrecognized compensation expense related to unvested options																						350,596
Unrecognized compensation expense related to unvested options, recognize date																through April 2016						through March 2017
Unrecognized compensation expense related to unvested options															$ 531,785	$ 531,785
Employee purchase plan discount rate					15.00%
Reservation of shares under stock purchase plan									247,500
Shares purchase under employee stock purchase plan							1,054	1,550	2,266	2,547
Available shares under Stock Purchase Plan	877,183				877,183	916,612	61,965		61,965

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Automatic annual grant of stock options to each non-employee director.

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Cumulative budgeted net sales target measurement period.

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Cash paid to each non-employee director for each board meeting attended.

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Annual cash retainer provided to each non-employee director.

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Non employee director received restricted stock award value.

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Options awarded to non-employee directors pursuant to equity incentive plan.

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Reservation of shares under employee stock purchase plan.

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Restricted stock unit vested percentage on anniversary of the grant date provided the grantee is employed by the Company and the Company achieves specific thresholds of net sales and annual operating income.

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Restricted stock unit vested percentage upon achievement of operating income return on net assets.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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Unrecognized cost of unvested options awarded to employees as compensation.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Discount rate from fair value on purchase date that participants pay for shares.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of options outstanding, including both vested and non-vested options.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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