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Stock-Based Compensation (Tables) | 6 Months Ended
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Feb. 29, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Stock-Based Compensation Expense |
|  | Thirteen Weeks Ended |  | Twenty-Six Weeks Ended
|  | February 29, |  | March 2, |  | February 29, |  | March 2,
|  | 2020 |  | 2019 |  | 2020 |  | 2019
|  | (Dollars in thousands)
Stock options |  | $ | 754 |  | $ | 1,121 |  | $ | 1,729 |  | $ | 2,326
Restricted share awards |  |  | (21) |  |  | 338 |  |  | 184 |  |  | 870
Restricted stock units |  |  | 3,039 |  |  | 2,364 |  |  | 5,915 |  |  | 4,729
Performance share units |  |  | 168 |  |  | — |  |  | 214 |  |  | —
Associate Stock Purchase Plan |  |  | 77 |  |  | 81 |  |  | 136 |  |  | 153
Total |  |  | 4,017 |  |  | 3,904 |  |  | 8,178 |  |  | 8,078
Deferred income tax benefit |  |  | (1,008) |  |  | (980) |  |  | (2,048) |  |  | (2,028)
Stock-based compensation expense, net |  | $ | 3,009 |  | $ | 2,924 |  | $ | 6,130 |  | $ | 6,050
Schedule Of Option Grant Fair Value Assumptions |
| Thirteen and Twenty-Six Weeks Ended
|  | March 2,
|  | 2019
Expected life (in years) |  | 4.0 |
Risk-free interest rate |  | 2.98 | %
Expected volatility |  | 23.13 | %
Expected dividend yield |  | 2.70 | %
Weighted-average grant-date fair value |  | $14.05 |
Summary Of Stock Option Activity |
| Options |  | Weighted-Average Exercise Price per Share |  | Weighted-Average Remaining Contractual Term (in years) |  | Aggregate Intrinsic Value
Outstanding on August 31, 2019 | 1,894 |  | $ | 74.73 |  |  |  |  |
Granted | — |  |  | — |  |  |  |  |
Exercised | (210) |  |  | 63.87 |  |  |  |  |
Canceled/Forfeited | (99) |  |  | 80.56 |  |  |  |  |
Outstanding on February 29, 2020 | 1,585 |  | $ | 75.80 |  | 3.7 |  | $ | 747
Exercisable on February 29, 2020 | 1,056 |  | $ | 73.82 |  | 3.0 |  | $ | 747
Summary Of Performance Share Unit Activity |
| Shares |  | Weighted-Average Grant-Date Fair Value
Non-vested PSUs at August 31, 2019 | — |  | $ | —
Granted | 31 |  |  | 76.32
Vested | — |  |  | —
Canceled/Forfeited | (3) |  |  | 76.32
Non-vested PSUs at February 29, 2020 (1) | 28 |  | $ | 76.32
(1) Excludes 3 shares of accrued incremental dividend equivalent rights on outstanding PSUs granted under the Company's 2015 Omnibus Incentive Plan.
Restricted Share Awards [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary Of Non-Vested Restricted Share Award Activity |
| Shares |  | Weighted-Average Grant-Date Fair Value
Non-vested RSAs at August 31, 2019 | 21 |  | $ | 82.00
Granted | — |  |  | —
Vested | (19) |  |  | 82.90
Canceled/Forfeited | (1) |  |  | 70.40
Non-vested RSAs at February 29, 2020 | 1 |  | $ | 72.23
Restricted Stock Units [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary Of Non-Vested Restricted Stock Unit Award Activity |
| Shares |  | Weighted-Average Grant-Date Fair Value
Non-vested RSUs at August 31, 2019 | 416 |  | $ | 76.93
Granted | 237 |  |  | 75.97
Vested | (127) |  |  | 74.72
Canceled/Forfeited | (33) |  |  | 77.23
Non-vested RSUs at February 29, 2020 (1) | 493 |  | $ | 77.02
(1) Excludes approximately 60 shares of accrued incremental dividend equivalent rights on outstanding RSUs granted under the Company's 2015 Omnibus Incentive Plan.

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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + 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 (h)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested performance-based units. + 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) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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 (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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