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Impairment of Long-Lived Assets - Details of Long-Lived Assets Tested and Impaired (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
May 02, 2015
Store
May 03, 2014
Store
Goodwill and Intangible Assets Disclosure [Abstract]    
Carrying value of assets tested for impairment $ 881psun_LongLivedAssetsTestedCarryingValue $ 4,028psun_LongLivedAssetsTestedCarryingValue
Carrying value of assets with impairment 550psun_LongLivedAssetsImpairedDuringPeriodCarryingValue 1,024psun_LongLivedAssetsImpairedDuringPeriodCarryingValue
Fair value of assets impaired $ 9psun_Fairvalueofassetsimpaired $ 241psun_Fairvalueofassetsimpaired
Number of stores tested for impairment 24psun_LongLivedAssetsStoresTestedForImpairmentNumber 54psun_LongLivedAssetsStoresTestedForImpairmentNumber
Number of stores with impairment 6psun_LongLivedAssetsStoresWithImpairmentNumber 17psun_LongLivedAssetsStoresWithImpairmentNumber