Segment Reporting (Details)	Oct. 31, 2012 state store
Segment Reporting [Abstract]
Number of stores	1,704
Number of states in which entity operates	12

The number of states the entity operates in as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant