Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Property, Equipment and Improvements - Schedule of Property, Equipment and Improvements (Details) (USD $)	3 Months Ended
	Jan. 25, 2015	May 03, 2015	Apr. 27, 2014
Property, Plant and Equipment [Line Items]
Total		$ 671,717,000us-gaap_PropertyPlantAndEquipmentGross	$ 583,434,000us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation and amortization		(355,940,000)	(310,106,000)
Property, equipment and improvements (net)		315,777,000us-gaap_PropertyPlantAndEquipmentNet	273,328,000us-gaap_PropertyPlantAndEquipmentNet
Impairment of long-lived assets	5,800,000
Land and Buildings
Property, Plant and Equipment [Line Items]
Total		68,286,000	49,995,000
Computer Equipment
Property, Plant and Equipment [Line Items]
Total		62,857,000	55,611,000
Office Equipment, Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Total		5,251,000	5,213,000
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Total		493,224,000	435,262,000
Leasehold Property and Improvements
Property, Plant and Equipment [Line Items]
Total		$ 42,099,000	$ 37,353,000