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Depreciation and Amortization of Fixed Assets (Detail) - Schedule of depreciation and amortization of fixed assets (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 27, 2012	Oct. 29, 2011	Oct. 27, 2012	Oct. 29, 2011
Cost of sales	$ 122	$ 133	$ 372	$ 406
Selling, general and administrative expenses	948	1,345	2,774	4,666
Total	$ 1,070	$ 1,478	$ 3,146	$ 5,072

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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