Additional share based compensation expense.

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- Definition

Number of performance based stock options cancelled.

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Number of performance-based stock options granted.

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Percentage of maximum number of ordinary shares through payroll deductions.

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Reversal of share based compensation expense.

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Share based compensation fair market value percentage of ordinary share.

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Share based compensation threshold trading days.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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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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- Definition

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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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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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

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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No definition available.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Expected term of 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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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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Aggregate change in value for stock issued during the period as a result of employee stock purchase plan.

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Equity Plans - Additional Information (Details) $ in Thousands		1 Months Ended		3 Months Ended			12 Months Ended
	Nov. 30, 2019 shares	Aug. 31, 2020	Mar. 31, 2018 tradingDay shares	Nov. 26, 2021 USD ($)	Nov. 27, 2020 USD ($)	Aug. 28, 2020 USD ($)	Aug. 26, 2022 USD ($) shares	Aug. 27, 2021 USD ($) shares	Aug. 28, 2020 USD ($) shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation costs related to awards							$ 2,800
Unrecognized compensation costs recognition period							1 year 8 months 23 days
Share options outstanding (in shares) \| shares							3,274,000	3,778,000
Options exercisable, Weighted average remaining contractual term (years)							4 years 9 months 7 days
Options outstanding, Weighted average remaining contractual term (years)							5 years 2 months 19 days	6 years 3 months 29 days
Total intrinsic value of employee stock options exercised							$ 6,300	$ 8,600	$ 3,000
Weighted-average risk-free interest rate								0.49%	1.32%
Expected dividend yield								0.00%	0.00%
Share-based compensation expense							40,119	$ 33,877	$ 18,716
Average expected term in years								6 years 3 months	6 years 3 months
Income tax benefits for share-based awards							$ 1,300
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of number of shares that will vest							25.00%
Options outstanding, Weighted average remaining contractual term (years)							7 years
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of number of shares that will vest							33.00%
Options outstanding, Weighted average remaining contractual term (years)							10 years
Performance-based Restricted Share Award (RSA)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional share-based compensation expense				$ 5,800
Restricted Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation costs related to awards							$ 88,600
Unrecognized compensation costs recognition period							2 years 6 months 18 days
Restricted Awards \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted awards, service period							3 years
Restricted Awards \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted awards, service period							4 years
Performance Based Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of performance-based stock options granted (in shares) \| shares			2
Share based compensation threshold trading days \| tradingDay			30
Weighted-average risk-free interest rate		0.34%	2.75%
Expected dividend yield			0.00%
Number of performance-based stock options cancelled (in shares) \| shares	1
Share-based compensation expense					$ 2,000
Expected volatility		56.07%	46.29%
Reversal of share based compensation expense						$ 2,300
Performance Based Stock Options \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Average expected term in years			1 year 1 month 6 days
Performance Based Stock Options \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Average expected term in years			4 years
Market Based Restricted Share Award \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of number of shares that will vest							0.00%
Market Based Restricted Share Award \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of number of shares that will vest							200.00%
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Ordinary shares, available for issuance (in shares) \| shares							1,900,000
Percentage of maximum number of ordinary shares through payroll deductions.							15.00%
Fair market value percentage of ordinary share							85.00%
Share issued under purchase plan (in shares) \| shares							307,000	353,000	314,000
Share issued under purchase plan							$ 6,500	$ 3,600	$ 3,000
2017 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Ordinary shares, available for issuance (in shares) \| shares							4,000,000
Inducement Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Ordinary shares, available for issuance (in shares) \| shares							2,000,000
2017 Share Incentive Plan (SGH Plan) \| Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period							4 years
Expiration term							10 years
2017 Share Incentive Plan (SGH Plan) \| RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period							4 years