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Equity Plans (Tables) | 12 Months Ended
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Aug. 29, 2019
Share-based Payment Arrangement [Abstract] |
Schedule of Restricted Stock Awards Activity |
|  | Number of Shares |  | Weighted-Average Grant Date Fair Value Per Share
Outstanding as of August 30, 2018 |  | 15 |  |  | $ | 25.18 |
Granted |  | 9 |  |  | 41.11 |
Restrictions lapsed |  | (6 | ) |  | 24.22 |
Canceled |  | (2 | ) |  | 24.79 |
Outstanding as of August 29, 2019 |  | 16 |  |  | 34.72 |
For the year ended |  | 2019 |  | 2018 |  | 2017 |
Restricted stock award shares granted |  | 9 |  |  | 4 |  |  | 8 |
Weighted-average grant-date fair value per share |  | $ | 41.11 |  |  | $ | 42.48 |  |  | $ | 18.77 |
Aggregate vesting-date fair value of shares vested |  | $ | 248 |  |  | $ | 259 |  |  | $ | 115 |
Schedule of Option Activity | Option activity for 2019 is summarized as follows:
|  | Number of Shares |  | Weighted-Average Exercise Price Per Share |  | Weighted-Average Remaining Contractual Life (In Years) |  | Aggregate Intrinsic Value
Outstanding as of August 30, 2018 |  | 18 |  |  | $ | 23.38 |  |  |  |  |
Granted |  | — |  |  | 44.30 |  |  |  |  |
Exercised |  | (5 | ) |  | 17.50 |  |  |  |  |
Canceled or expired |  | (1 | ) |  | 22.60 |  |  |  |  |
Outstanding as of August 29, 2019 |  | 12 |  |  | 25.94 |  |  | 4.3 |  | $ | 220 |
Exercisable as of August 29, 2019 |  | 7 |  |  | $ | 25.37 |  |  | 3.7 |  | $ | 143 |
Unvested as of August 29, 2019 |  | 5 |  |  | 26.94 |  |  | 5.5 |  | 77 |
Stock Options Granted and Valuation Assumptions | Stock options granted and assumptions used in the Black-Scholes option valuation model were as follows:
For the year ended |  | 2019 |  | 2018 |  | 2017 |
Stock options granted |  | — |  |  | 2 |  | 8 |
Weighted-average grant-date fair value per share |  | $ | 19.50 |  | $ | 18.65 |  | $ | 8.68 |
Average expected life in years |  | 5.4 |  | 5.5 |  | 5.5 |
Weighted-average expected volatility |  | 44.0 | % |  |  | 44.0 | % |  |  | 46.0 | % |  |
Weighted-average risk-free interest rate |  | 2.9 | % |  |  | 2.2 | % |  |  | 1.8 | % |  |
Expected dividend yield |  | 0.0 | % |  |  | 0.0 | % |  |  | 0.0 | % |  |
Employee Stock Purchase Plan Valuation Assumptions | Assumptions used in the Black-Scholes option valuation model were as follows:
For the year ended |  | 2019 |  | 2018 |
Weighted-average grant-date fair value per share |  | $ | 11.60 |  | $ | 14.55 |
Average expected life in years |  | 0.5 |  | 0.5 |
Weighted-average expected volatility |  | 45.0 | % |  |  | 43.0 | % |  |
Weighted-average risk-free interest rate |  | 2.2 | % |  |  | 2.2 | % |  |
Expected dividend yield |  | 0.0 | % |  |  | 0.0 | % |  |
Stock-based Compensation Expense by Caption |
For the year ended |  | 2019 |  | 2018 |  | 2017
Stock-based compensation expense by caption |  |  |  |  |  |
Cost of goods sold |  | $ | 102 |  |  | $ | 83 |  |  | $ | 88 |
Selling, general, and administrative |  | 73 |  |  | 61 |  |  | 75 |
Research and development |  | 68 |  |  | 54 |  |  | 52 |
|  | $ | 243 |  |  | $ | 198 |  |  | $ | 215 |
Stock-based compensation expense by type of award |  |  |  |  |  |
Restricted stock awards |  | $ | 178 |  |  | $ | 140 |  |  | $ | 144 |
Stock options |  | 33 |  |  | 55 |  |  | 71 |
ESPP |  | 32 |  |  | 3 |  |  | — |
|  | $ | 243 |  |  | $ | 198 |  |  | $ | 215 |

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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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