Share-Based Compensation (Schedule Of Stock Option Activity Under Plan) (Details) - $ / shares	6 Months Ended
Aug. 01, 2015	Aug. 02, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Option Maximum Term	10 years
Stock Option Vesting Period	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, Balance (shares)	1,160,934
Options outstanding, Granted (shares)	116,894
Options outstanding, Forfeited (shares)	(53,953)
Options outstanding, Exercised (shares)	(93,020)
Options outstanding, Balance (shares)	1,130,855
Options outstanding, Exercisable (shares)	553,974
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted average exercise price, Balance (dollars per share)	$ 24.80
Weighted average exercise price, Granted (dollars per share)	28.58
Weighted average exercise price, Forfeited (dollars per share)	33.62
Weighted average exercise price, Exercised (dollars per share)	8.22
Weighted average exercise price, Balance (dollars per share)	26.13
Weighted average exercise price, Exercisable (dollars per share)	$ 19.56
Weighted Average Remaining Contractual Term (in years)	7 years 8 months 24 days	8 years
Weighted average remaining contractual term, Exercisable	6 years 10 months 18 days

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Stock Option Vesting Period

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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 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.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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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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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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