Segment Information - Reconciliation of Earnings from Operations to Earnings Before Income Tax and Loss from Unconsolidated Affiliates (Detail) - USD ($) $ in Thousands	3 Months Ended
Nov. 30, 2019	Nov. 30, 2018
Segment Reporting, Other Significant Reconciling Item [Line Items]
Earnings from operations	$ 41,784	$ 36,454
Interest and foreign exchange	12,852	4,404
Earnings before income tax and earnings from unconsolidated affiliates	$ 28,932	$ 32,050

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration