Earnings Per Share (Calculation of Basic and Diluted Income Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	May. 30, 2015	May. 31, 2014	May. 30, 2015	May. 31, 2014
Earnings Per Share [Abstract]
Net income	$ 11,502	$ 11,385	$ 29,493	$ 32,124
Weighted average shares outstanding	26,932	27,209	26,942	27,552
Net income per share - basic (in dollars per share)	$ 0.43	$ 0.42	$ 1.09	$ 1.17
Dilutive impact of awards and options outstanding	98	110	100	114
Weighted average shares and potential dilutive shares outstanding	27,030	27,319	27,042	27,666
Net income per share - assuming dilution (in dollars per share)	$ 0.43	$ 0.42	$ 1.09	$ 1.16