Income Taxes - Changes in Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
Aug. 28, 2021	Aug. 29, 2020	Aug. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 5,830	$ 2,822	$ 1,220
Gross increases-tax positions in a prior year	0	2,486	1,173
Gross decreases-tax positions in a prior year	(872)	0	0
Gross increases-current year tax positions	579	522	429
Balance at end of year	5,537	5,830	2,822
Accrued interest and penalties	946	681	769
Total unrecognized tax benefits	$ 6,483	$ 6,511	$ 3,591

Amount recognized for uncertainty in income taxes classified as noncurrent.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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 accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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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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