Note 5 - Shareholders' Equity (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Jan. 31, 2013
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 21.1

The remaining repurchase amount authorized by an entity's Board of Directors under a stock repurchase plan.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration