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Supplemental Executive Retirement Plan (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Oct. 29, 2011
Oct. 30, 2010
Oct. 29, 2011
Oct. 30, 2010
Feb. 02, 2003
Supplemental Executive Retirement Plan          
Percentage of monthly compensation benefit received by CEO as per SERP         50.00%
Total compensation expenses related to Supplemental Executive Retirement Plan $ 0.1 $ 0.5 $ 1.6 $ 2.4  
Supplemental Employee Retirement Plans, Defined Benefit [Member]
         
Supplemental Executive Retirement Plan          
Total compensation expenses related to Supplemental Executive Retirement Plan       $ 2.1