Earnings Per Share (Calculation of Basic and Diluted Income Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 01, 2014	Mar. 02, 2013	Mar. 01, 2014	Mar. 02, 2013
Earnings Per Share [Abstract]
Net income	$ 9,593	$ 6,285	$ 20,739	$ 13,676
Weighted average shares outstanding	27,595	28,084	27,723	28,196
Net income per share - basic (in dollars per share)	$ 0.35	$ 0.22	$ 0.75	$ 0.49
Dilutive impact of awards and options outstanding	129	107	127	84
Weighted average shares and potential dilutive shares outstanding	27,724	28,191	27,850	28,280
Net income per share - assuming dilution (in dollars per share)	$ 0.35	$ 0.22	$ 0.74	$ 0.48