Note 3 - Accounts Receivable (Details) - Activity in the Allowance for Doubtful Accounts (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Aug. 30, 2014	Nov. 30, 2013
Activity in the Allowance for Doubtful Accounts [Abstract]
Balance at November 30, 2013	$ 1,607	$ 1,789
Additions charged to expense	164	361
Write-offs and other deductions	(228)	(543)
Balance at August 30, 2014	$ 1,543	$ 1,607