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9. Employee Benefit Plans (Details) (Supplemental Employee Retirement Plan [Member], USD $)
In Thousands, unless otherwise specified
Aug. 03, 2014
Feb. 02, 2014
Supplemental Employee Retirement Plan [Member]
   
9. Employee Benefit Plans (Details) [Line Items]    
Other Postretirement Defined Benefit Plan, Liabilities $ 7,735 $ 7,662