Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
Aug. 29, 2020	Aug. 31, 2019
Income Taxes
Beginning balance	$ 30,892	$ 26,077
Additions based on tax positions related to the current year	8,512	8,621
Additions for tax positions of prior years	946	2,115
Reductions for tax positions of prior years	(4,124)	(1,219)
Reductions due to settlements		(1,918)
Reductions due to statute of limitations	(4,284)	(2,784)
Ending balance	$ 31,942	$ 30,892

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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