Number of regional groups.

No definition available.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB
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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

+ References

No definition available.

+ Details

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- Definition

Percentage of fair value of reporting unit in excess of carrying amount.

+ References

No definition available.

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Goodwill - Additional Information (Details) $ in Thousands	3 Months Ended	12 Months Ended
Goodwill - Additional Information (Details) $ in Thousands	Nov. 30, 2020 USD ($) reporting_unit Regional	Aug. 31, 2020 USD ($) reporting_unit	Jul. 01, 2020
Goodwill [Line Items]
Goodwill	$ 169,686	$ 169,627
Number of reporting units \| reporting_unit	3
Number of regional groups \| Regional	2
Goodwill, impaired, accumulated impairment loss	$ 471,000	$ 471,000
AMR
Goodwill [Line Items]
Number of reporting units \| reporting_unit		1
AMR \| Single Reporting Unit Carried Out
Goodwill [Line Items]
Goodwill		$ 1,000
Estimated fair value of reporting unit exceeded carrying amount			29.00%