Note 16 - Income Taxes (Details) - Reconciliation of Unrecognized Tax Benefits (USD $) In Thousands, unless otherwise specified	12 Months Ended
Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2012
Reconciliation of Unrecognized Tax Benefits [Abstract]
Unrecognized income tax benefits	$ 5,435	$ 5,464	$ 7,204
Additions based on tax positions related to the current year	921	1,372	691
Additions for tax positions of prior years	628	986	470
Statute of limitations lapse	(717)	(1,103)	(613)
Reductions from settlements with taxing authorities	(766)	(1,284)	(2,288)
Unrecognized income tax benefits	$ 5,501	$ 5,435	$ 5,464

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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-Name Accounting Standards Codification

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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