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Equity Plans (Tables)
 9 Months Ended
May 27, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Assumptions Used to Value Stock Options
Share option activity and assumptions were as follows:
Nine Months EndedMay 28,
2021
Share options granted500 
Weighted average grant-date fair value per share$6.65 
Average expected term in years6.25
Weighted-average expected volatility52.07 %
Weighted-average risk-free interest rate0.49 %
Expected dividend yield—
Schedule of Share Based Compensation Expense Allocation
Three Months EndedNine Months Ended
May 27,
2022		May 28,
2021		May 27,
2022		May 28,
2021
Share-based compensation expense by caption:
Cost of sales$1,724 $1,166 $5,103 $2,807 
Research and development1,679 1,468 4,778 3,055 
Selling, general and administrative7,144 5,747 20,414 19,005 
 $10,547 $8,381 $30,295 $24,867 
Restricted Awards  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Summary of Aggregate Restricted Award Activity and Assumptions
Aggregate Restricted Award activity was as follows:
Three Months EndedNine Months Ended
May 27,
2022		May 28,
2021		May 27,
2022		May 28,
2021
Awards granted935 3,079 1,581 4,513 
Weighted average grant-date fair value per share$24.25 $19.97 $25.96 $17.65 
Aggregate vesting-date fair value of shares vested$24,099 $7,281 $42,326 $18,689