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Equity Plans (Tables)
 6 Months Ended
Feb. 27, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Restricted Stock Awards Activity
Quarter endedSix months ended
February 27,
2020		February 28,
2019		February 27,
2020		February 28,
2019
Restricted stock award shares granted——86
Weighted-average grant-date fair value per share$54.71  $37.01  $46.38  $39.83  
Schedule of Employee Stock Purchase Plan Valuation Assumptions
Quarter endedFebruary 27,
2020		February 28,
2019
Weighted-average grant-date fair value per share14.43  10.92  
Average expected life in years0.50.5
Weighted-average expected volatility43 %47 %
Weighted-average risk-free interest rate1.5 %2.5 %
Expected dividend yield0 %0 %
Stock-based Compensation Expense by Caption
Quarter endedSix months ended
February 27,
2020		February 28,
2019		February 27,
2020		February 28,
2019
Stock-based compensation expense by caption
Cost of goods sold$37  $23  $68  $49  
Selling, general, and administrative26  18  48  37  
Research and development22  16  41  32  
$85  $57  $157  $118  
Stock-based compensation expense by type of award
Restricted stock awards$70  $42  $127  $83  
ESPP11  8  19  16  
Stock options4  7  11  19  
$85  $57  $157  $118