Commitments and Contingencies (Details) (Property and inventory purchase commitments, USD $) In Thousands, unless otherwise specified	3 Months Ended
Dec. 01, 2012
Property and inventory purchase commitments
Commitments and Contingencies
Purchase obligations	$ 2,994

The minimum amount the entity agreed to spend under the long-term purchase commitment.

No definition available.

Name:	us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration