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Fair Value Measurements - Underlying Asset Value (Details) (USD $)
In Thousands, unless otherwise specified
May 02, 2015
Jan. 31, 2015
May 03, 2014
Investment [Line Items]      
Underlying assets in non-qualified deferred compensation program $ 102,861us-gaap_DeferredCompensationPlanAssets $ 94,054us-gaap_DeferredCompensationPlanAssets $ 92,878us-gaap_DeferredCompensationPlanAssets
Level 1 [Member]      
Investment [Line Items]      
Underlying assets in non-qualified deferred compensation program 89,536us-gaap_DeferredCompensationPlanAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 81,926us-gaap_DeferredCompensationPlanAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 79,361us-gaap_DeferredCompensationPlanAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Level 2 [Member]      
Investment [Line Items]      
Underlying assets in non-qualified deferred compensation program $ 13,325us-gaap_DeferredCompensationPlanAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 $ 12,128us-gaap_DeferredCompensationPlanAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 $ 13,517us-gaap_DeferredCompensationPlanAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member