Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details) (USD $)
In Thousands
3 Months Ended 6 Months Ended
Jul. 30, 2011
Jul. 31, 2010
Jul. 30, 2011
Jul. 31, 2010
Commitments and contingencies (Textuals) [Abstract]        
Non-cancelable operating lease terms, minimum     3 years  
Non-cancelable operating lease terms, maximum     10 years  
Total rent expense under operating leases $ 23,127 $ 20,135 $ 44,984 $ 39,594