Equity Plans (Tables)

9 Months Ended

May 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of stock options granted and fair value assumptions used

	Quarter ended						Nine months ended
	May 31, 2018			June 1, 2017			May 31, 2018			June 1, 2017
Stock options granted	—			1			2			7
Weighted-average grant-date fair value per share	$	24.14		$	11.64		$	18.61		$	8.59
Average expected life in years	5.4			5.5			5.5			5.5
Weighted-average expected volatility	45		%	44		%	44		%	46		%
Weighted-average risk-free interest rate	2.8		%	2.0		%	2.2		%	1.8		%
Expected dividend yield	0.0		%	0.0		%	0.0		%	0.0		%

Schedule restricted stock awards activity

	Quarter ended				Nine months ended
	May 31, 2018		June 1, 2017		May 31, 2018		June 1, 2017
Restricted stock award shares granted	—		—		4		8
Weighted-average grant-date fair value per share	$	53.77	$	27.75	$	42.14	$	19.10

Stock-based compensation expense by caption

	Quarter ended				Nine months ended
	May 31, 2018		June 1, 2017		May 31, 2018		June 1, 2017
Stock-based compensation expense by caption
Cost of goods sold	$	20	$	24	$	62	$	66
Selling, general, and administrative	14		20		48		53
Research and development	14		13		41		39
	$	48	$	57	$	151	$	158
Stock-based compensation expense by type of award
Stock options	$	13	$	19	$	44	$	54
Restricted stock awards	35		38		107		104
	$	48	$	57	$	151	$	158