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Basis Of Presentation And Summary Of Significant Accounting Policies (Recently Adopted Accounting Standards) (Narrative) (Details) - USD ($) $ in Thousands	Aug. 31, 2020	Sep. 01, 2019	Aug. 31, 2019	Aug. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of change in accounting principle			$ (323)	$ 61
Assets	$ 362,637		302,662
Liabilities	$ 202,324		$ 157,187
Accounting Standards Update 2018-11 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Assets		$ 9,000
Liabilities		$ 9,200

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
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