Share-Based Compensation Performance Shares (Details) $ / shares in Units, $ in Millions	3 Months Ended
Apr. 30, 2016 shares $ / shares	May. 02, 2015 USD ($) $ / shares
Performance shares
Stock-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period	3 years
Number of shares
Outstanding at January 30, 2016	384,299
Granted	451,680
Forfeited	6,101
Outstanding at April 30, 2016	829,878
Performance shares \| Maximum
Stock-based Compensation Arrangement by Share-based Payment Award [Line Items]
Multiple of the number of granted shares outstanding for issuable shares	2
Performance shares \| Minimum
Stock-based Compensation Arrangement by Share-based Payment Award [Line Items]
Multiple of the number of granted shares outstanding for issuable shares	0
2012 Performance Shares Granted
Aggregate intrinsic value
Aggregate intrinsic value, vested \| $		$ 4.9
2013 Performance Shares Granted
Number of shares
Forfeited	112,750
2014 Performance Shares Granted
Number of shares
Outstanding at January 30, 2016	160,423
Forfeited	2,292
Outstanding at April 30, 2016	158,131
Weighted average grant date fair value (in dollars per share)
Outstanding at end of period, weighted average grant date fair value (in dollars per share) \| $ / shares	$ 33.84
2015 Performance Shares Granted
Number of shares
Outstanding at January 30, 2016	223,876
Forfeited	3,809
Outstanding at April 30, 2016	220,067
Weighted average grant date fair value (in dollars per share)
Outstanding at end of period, weighted average grant date fair value (in dollars per share) \| $ / shares	$ 28.33	$ 28.42
2016 Performance Shares Granted
Number of shares
Granted	451,680
Outstanding at April 30, 2016	451,680
Weighted average grant date fair value (in dollars per share)
Outstanding at end of period, weighted average grant date fair value (in dollars per share) \| $ / shares	$ 8.69

Multiple of the number of granted shares outstanding for calculating the number of issuable shares.

No definition available.

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of grants made 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).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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

+ References

No definition available.

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

Intrinsic value of equity-based compensation awards vested. Excludes stock and unit options.

+ References

No definition available.

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