Warranty (Schedule of Product Warranty Liability) (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
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at beginning of period	$ 8,781	$ 8,065	$ 8,443	$ 6,990
Provision	2,736	2,118	7,874	7,032
Claims paid	(2,599)	(1,742)	(7,399)	(5,581)
Balance at end of period	$ 8,918	$ 8,441	$ 8,918	$ 8,441