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Stock-Based Compensation (Narrative) (Details) - USD ($)	3 Months Ended				9 Months Ended
	Oct. 28, 2017	Apr. 29, 2017	Oct. 29, 2016	Apr. 28, 2015	Oct. 28, 2017	Oct. 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available to be issued and sold pursuant to the 2017 Plan	1,000,000				1,000,000
Stock-based compensation expense for ESPP	$ 10,000		$ 9,000		$ 30,000	$ 33,000
Income tax benefit - ESPP	$ 4,000		$ 3,000		12,000	12,000
Fair value of stock awards vested during period					$ 2,900,000	$ 854,000
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercised					3,500
Options outstanding	3,500				3,500
Options exercisable	3,500				3,500
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense for restricted stock					$ 2,100,000
Weighted average grant date fair value of awards					$ 24.09	$ 24.98
Number of shares of awards expired		135,000
Number of shares restricted stock awards expired unvested					168,937
Reduced share based compensation expense					$ 916,000
Cumulative share based compensation expense					3,100,000
Unrecognized share-based compensation expense	$ 4,900,000				$ 4,900,000
Unrecognized compensation cost, recognition period					1 year 8 months 12 days
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value of awards					$ 3.22	4.53
Unrecognized share-based compensation expense	$ 23,000				$ 23,000
Unrecognized compensation cost, recognition period					5 months
Defined maximum gain				$ 10.00	$ 10.00	$ 10.00
Exercise price				$ 24.26

X

- Definition

Represent cumulative 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.

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The amount of plan income tax benefit recognized during the period.

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Represent reduced 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.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were expired during the reporting period.

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The maximum payout used in calculating fair value of award.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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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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 number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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