Equity (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jul. 28, 2012	Jul. 30, 2011
Changes in equity:
Stockholders' Equity, Beginning Balance	$ 366,495	$ 302,940
Comprehensive income	7,138	18,048
Share transactions under employee stock purchase plans	2,549	3,944
Issuance of common stock		52,926
Stockholders' Equity, Ending Balance	$ 376,182	$ 377,858

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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- Definition

Aggregate change in value for stock issued during the period as a result of employee stock purchase plan.

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