Note 15 - Share Repurchase Program (Details Textual) - USD ($)	3 Months Ended	9 Months Ended		12 Months Ended
	Aug. 27, 2016	Aug. 27, 2016	Aug. 29, 2015	Nov. 28, 2015	Sep. 30, 2010
2010 Share Repurchase Program [Member]
Stock Repurchase Program, Authorized Amount					$ 100,000,000
Stock Repurchased During Period, Value	$ 5,326,000	$ 9,536,000	$ 0
Decreased Value of Common Stock Shares Repurchased		250,000
Decreased Value of Additional Paid in Capital for Shares Repurchased		9,286,000
Stock Repurchased During Period, Value		$ 11,901,000		$ 19,290,000