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Supplemental Executive Retirement Plan (Tables)
 9 Months Ended
Nov. 01, 2014
Compensation and Retirement Disclosure [Abstract]  
Components of net periodic pension cost
The components of net periodic pension cost for the three and nine months ended November 1, 2014 and November 2, 2013 were as follows (in thousands):    
 
Three Months Ended
 
Nine Months Ended
 
Nov 1, 2014
 
Nov 2, 2013
 
Nov 1, 2014
 
Nov 2, 2013
Interest cost
$
573

 
$
586

 
$
1,717

 
$
1,758

Net amortization of unrecognized prior service (credit) cost
(58
)
 
(58
)
 
(174
)
 
253

Net amortization of actuarial losses
234

 
277

 
703

 
831

Net periodic defined benefit pension cost
$
749

 
$
805

 
$
2,246

 
$
2,842