Equity Plans (Tables)

3 Months Ended

Nov. 26, 2021

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:

Three months ended	November 27, 2020
Share options granted		250
Weighted average grant-date fair value per share	$	13.30
Average expected term in years		6.25
Weighted-average expected volatility		52.07	%
Weighted-average risk-free interest rate		0.49	%
Expected dividend yield		—

Schedule of Share Based Compensation Expense Allocation

Three months ended	November 26, 2021		November 27, 2020
Share-based compensation expense by caption:
Cost of sales	$	1,731	$	838
Research and development		1,540		778
Selling, general and administrative		6,504		9,472
	$	9,775	$	11,088

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 ended	November 26, 2021		November 27, 2020
Awards granted		266		548
Weighted average grant-date fair value per share	$	56.04	$	20.81
Aggregate vesting-date fair value of shares vested	$	11,956	$	8,370