Share-Based Compensation (Total Cost Of Share-Based Compensation) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	May 31, 2014	Jun. 01, 2013	May 31, 2014	Jun. 01, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	$ 616	$ 488	$ 2,860	$ 1,933
Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	318	360	2,326	1,061
Unvested Share Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	75	100	258	284
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	32	28	85	69
Management Stock Loans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost				497
Fully Vested Share Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	$ 191		$ 191	$ 22