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Restructuring (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jan. 27, 2012	Jul. 29, 2011
Restructuring [Abstract]
Number of management and staff positions eliminated		60
Restructuring liability [Roll forward]
Liability at beginning of period	$ 1,579
Payments	(1,030)
Adjustments	(127)
Liability at end of period	$ 422	$ 1,579

Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

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- Definition

Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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