Discontinued Operations - Additional Information (Detail)	12 Months Ended
Jan. 31, 2015 Store	Feb. 01, 2014 Store	Feb. 02, 2013 Store
Discontinued Operations and Disposal Groups [Abstract]
Number of underperforming stores which were closed	18	30	92

Number of stores closed which were included in discontinued operations.

No definition available.

Name:	psun_NumberOfStoresClosedIncludedInDiscontinuedOperations
Namespace Prefix:	psun_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration