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Equity Plans (Tables) | 3 Months Ended
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Nov. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of stock options granted and fair value assumptions used |
Quarter ended |  | November 30, 2017 |  | December 1, 2016
Stock options granted |  | 1 |  |  | 2 |
Weighted-average grant-date fair value per share |  | $ | 17.67 |  |  | $ | 7.66 |
Average expected life in years |  | 5.6 |  |  | 5.7 |
Weighted-average expected volatility |  | 44 | % |  | 46 | %
Weighted-average risk-free interest rate |  | 2.1 | % |  | 1.4 | %
Expected dividend yield |  | 0.0 | % |  | 0.0 | %
Schedule restricted stock awards activity |
Quarter ended |  | November 30, 2017 |  | December 1, 2016
Restricted stock award shares granted |  | 2 |  |  | 3 |
Weighted-average grant-date fair value per share |  | $ | 39.01 |  |  | $ | 18.22 |
Stock-based compensation expense by caption |
Quarter ended |  | November 30, 2017 |  | December 1, 2016
Stock-based compensation expense by caption |  |  |  |
Cost of goods sold |  | $ | 20 |  |  | $ | 19 |
Selling, general, and administrative |  | 18 |  |  | 15 |
Research and development |  | 13 |  |  | 12 |
|  | $ | 51 |  |  | $ | 46 |
Stock-based compensation expense by type of award |  |  |  |
Stock options |  | $ | 17 |  |  | $ | 17 |
Restricted stock awards |  | 34 |  |  | 29 |
|  | $ | 51 |  |  | $ | 46 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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