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Inventories - Inventory Valuation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2019
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 24,221
Balance at end of period	19,876	$ 24,221
Inventory Valuation Reserve
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	24,221	9,512	$ 5,614
Charge to cost of revenue	746	17,966	9,734
Disposition of inventory	(5,000)	(3,555)	(5,651)
Currency translation effect	(91)	298	(185)
Balance at end of period	$ 19,876	$ 24,221	$ 9,512

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Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods.

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Amount of increase (decrease) in valuation and qualifying accounts and reserves from adjustment.

+ References

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Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.

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