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Basis of Presentation (Narrative) (Details) - USD ($) $ in Thousands	Feb. 29, 2020	Sep. 01, 2019	Aug. 31, 2019	Feb. 28, 2019
Basis Of Presentation [Line Items]
Right of use asset	$ 27,257		$ 0	$ 0
Lease liability	$ 30,709
ASU 2016-02 [Member]
Basis Of Presentation [Line Items]
Right of use asset		$ 26,200
Lease liability		$ 29,500

X

- Definition

Basis of presentation.

+ References

No definition available.

+ Details

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X

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

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

X

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

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