Summary of Significant Accounting Policies (Details) $ / shares in Units, $ in Thousands		12 Months Ended
	Sep. 26, 2018 USD ($) $ / shares	Aug. 25, 2018 USD ($) reportable_segments $ / shares	Aug. 26, 2017 USD ($) $ / shares	Aug. 27, 2016 USD ($) $ / shares
New Accounting Pronouncements and Subsequent Events [Line Items]
Reclassification to retained earnings		$ 0
Excess tax benefits		$ 500
Excess tax benefit, percent		0.40%
Excess tax benefit effect on earnings per share | $ / shares		$ 0.02
Dividends paid per common share | $ / shares		$ 0.40	$ 0.40	$ 0.40
Dividends, Common Stock, Cash		$ 12,738	$ 12,738	$ 10,891
Number of Reportable Segments | reportable_segments		2
Insurance policy limit		$ 50,000
Self insurance reserve for product liability, per occurance		2,500
Self insurance reserve for product liability, aggregate per policy year		6,000
Advertising expense		7,400	5,700	$ 4,900
Subsequent Event [Member]
New Accounting Pronouncements and Subsequent Events [Line Items]
Dividends paid per common share | $ / shares	$ 0.10
Dividends, Common Stock, Cash	$ 3,200
Accumulated Other Comprehensive Income [Member]
New Accounting Pronouncements and Subsequent Events [Line Items]
Reclassification to retained earnings		$ (59)	$ 0