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Tikatok Impairment Charges (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Oct. 27, 2012	Jan. 26, 2013
Impairment Costs [Line Items]
Impairment charges	$ 1,973	$ 1,973
Goodwill written off	1,947
Intangible write0ff	$ 26

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

Write-off of the carrying amount of goodwill associated with all or a portion of a reporting unit that is sold in the period.