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Share-based Compensation - Narrative (Details) - USD ($) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Oct. 27, 2014 | Aug. 28, 2021 | Aug. 29, 2020 | Aug. 31, 2019 | Oct. 30, 2010 | Nov. 30, 1996
Stock Appreciation Rights (SARs) |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Period awards become fully vested or exercisable |  | 5 years |  |  |  |
Expiration period |  | 10 years |  |  |  |
Weighted average fair values of Share-Based Awards granted (in dollars per share) |  | $ 42.63 | $ 46.58 | $ 46.20 |  |
Stock Appreciation Rights (SARs) | Tranche One |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Percentage vested after each anniversary of the grant date |  | 20.00% |  |  |  |
Stock Appreciation Rights (SARs) | Tranche Two |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Percentage vested after each anniversary of the grant date |  | 60.00% |  |  |  |
Stock Appreciation Rights (SARs) | Tranche Three |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Percentage vested after each anniversary of the grant date |  | 20.00% |  |  |  |
Stock Appreciation Rights (SARs) | Cliff Vesting |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Period awards become fully vested or exercisable |  | 5 years |  |  |  |
Share-Based Awards |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Total compensation cost not yet recognized related to non-vested awards |  | $ 14,600 |  |  |  |
Period for recognition |  | 1 year 10 months 24 days |  |  |  |
Time-Based Restricted Stock Units | Tranche One |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Percentage vested after each anniversary of the grant date |  | 20.00% |  |  |  |
Period awards become fully vested or exercisable |  | 5 years |  |  |  |
Time-Based Restricted Stock Units | Tranche Two |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Percentage vested after each anniversary of the grant date |  | 33.00% |  |  |  |
Period awards become fully vested or exercisable |  | 3 years |  |  |  |
Time-Based Restricted Stock Units | Tranche Three |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Period awards become fully vested or exercisable |  | 5 years |  |  |  |
Time-Based Restricted Stock Units | Cliff Vesting |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Period awards become fully vested or exercisable |  | 5 years |  |  |  |
Time-Based Restricted Stock Units | Tranche Four |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Percentage vested after each anniversary of the grant date |  | 60.00% |  |  |  |
Time-Based Restricted Stock Units | Tranche Five |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Percentage vested after each anniversary of the grant date |  | 20.00% |  |  |  |
Non-Employee Directors | Unrestricted Stock |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares granted (in shares) |  | 0 | 0 | 291 |  |
The 1996 Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares reserved for issuance (in shares) |  |  |  |  |  | 1,500,000
The 2010 Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares reserved for issuance (in shares) |  |  |  |  | 600,000 |
Number of additional shares reserved for issuance (in shares) | 750,000 |  |  |  |  |
Shares available for future grants (in shares) |  | 251,713 |  |  |  |
The 2010 Plan | Non-Employee Directors | Stock Appreciation Rights (SARs) |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares granted (in shares) |  | 5,000 | 5,000 | 5,000 |  |

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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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