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Note 4 - Accounts Receivable (Detail) - Activity in the allowance for doubtful accounts (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 24, 2012	Nov. 26, 2011	Nov. 27, 2010
Balance, beginning of the year	$ 2,092	$ 7,366
Additions charged to expense	376	13,490	6,567
Write-offs	(680)	(14,052)
Balance, end of the year	1,789	2,092	7,366
Additions Charged to Expense [Member]
Additions charged to expense	$ 377	$ 8,778

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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