Equity Plans - Additional Information (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
Nov. 26, 2021	Nov. 27, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Ordinary shares available for future awards	4,300
Unrecognized compensation costs related to awards	$ 5.3
Unrecognized compensation costs recognition period	1 year 11 months 15 days
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share issued under purchase plan \| shares	67	87
Share issued under purchase plan	$ 3.0	$ 1.8
Restricted Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation costs related to awards	$ 93.1
Unrecognized compensation costs recognition period	2 years 11 months 12 days
Performance-based Restricted Share Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional share-based compensation expense		$ 5.8
Minimum \| Restricted Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted awards, service period	3 years
Minimum \| Restricted Awards with Market Conditions
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of number of shares that will vest	0.00%
Maximum \| Restricted Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted awards, service period	4 years
Maximum \| Restricted Awards with Market Conditions
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of number of shares that will vest	200.00%

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Aggregate number of common shares reserved for future issuance.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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Percentage of vesting of award under share-based payment arrangement.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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