Income Taxes (Reconciliation Of The Beginning And Ending Amount Of Gross Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2016
Income Taxes [Abstract]
Beginning balance	$ 2,359	$ 3,024	$ 3,115
Additions based on tax positions related to the current year	27	10	199
Additions for tax positions in prior years	367	85	3
Reductions for tax positions of prior years resulting from the lapse of applicable statute of limitations	(253)	(634)	(212)
Other reductions for tax positions of prior years	(389)	(126)	(81)
Ending balance	$ 2,111	$ 2,359	$ 3,024

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 10B
-URI http://asc.fasb.org/extlink&oid=84176650&loc=SL37586934-109318

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-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-SubTopic 10
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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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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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