Represents the expense 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.

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Number of additional shares authorized for issuance under an established share-based compensation plan.

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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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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Summary of Significant Accounting Policies (Details 5) - USD ($) $ in Thousands		6 Months Ended
	Jul. 16, 2013	Aug. 01, 2015	Aug. 02, 2014
Stock-Based Compensation
Stock-based compensation expense recognized (in dollars)		$ 943	$ 424
Stock Options \| Employees
Stock-Based Compensation
Vesting period		3 years
Stock Options \| Minimum \| Employees
Stock-Based Compensation
Expiration period		7 years
Stock Options \| Maximum \| Employees
Stock-Based Compensation
Expiration period		10 years
2013 Plan
Stock-Based Compensation
Number of additional shares of common stock authorized to be issued	700,000
Number of shares of common stock authorized that were previously reserved but unissued under 2006 Plan	102,483
2006 Plan
Stock-Based Compensation
Number of shares available for future grants		0