Fair Value Measurements - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
Jan. 31, 2015	Feb. 01, 2014	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long Lived Assets Impairment Charges	$ 204,000psun_LongLivedAssetsImpairmentCharges	$ 1,173,000psun_LongLivedAssetsImpairmentCharges	$ 2,244,000psun_LongLivedAssetsImpairmentCharges	$ 3,204,000psun_LongLivedAssetsImpairmentCharges	$ 5,341,000psun_LongLivedAssetsImpairmentCharges
Money market funds, carrying value	20,000,000us-gaap_MoneyMarketFundsAtCarryingValue		20,000,000us-gaap_MoneyMarketFundsAtCarryingValue
Long-lived assets impairment charges			3,323,000us-gaap_AssetImpairmentCharges	3,204,000us-gaap_AssetImpairmentCharges	5,341,000us-gaap_AssetImpairmentCharges
Impairment charges from discontinued operations	$ 0	$ 5,000	$ 0	$ 14,000	$ 167,000

Long lived assets impairment charges.

No definition available.

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Namespace Prefix:	psun_
Data Type:	xbrli:monetaryItemType
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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228

+ Details

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- Details

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2611-110228

+ Details

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- Definition

Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash Equivalents

-URI http://asc.fasb.org/extlink&oid=6507016

+ Details

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