Note 16 - Commitments and Contingencies (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Nov. 30, 2011	Nov. 30, 2011
Litigation Settlement, Expense	$ 22,000	$ 22,000

This element represents the expenses incurred by the entity which are directly related and attributable to receiving an award in settlement of litigation.

No definition available.

Name:	us-gaap_LitigationSettlementExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration