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Employee benefit plans (Tables)
 12 Months Ended
Mar. 01, 2014
Employee benefit plans  
Schedule of reconciliation of the changes in the defined benefit obligations, a statement of funded status, and the related weighted-average assumptions

 

 

 
   March 1,
2014		   March 2,
2013		  

Change in benefit obligation:

              

Projected benefit obligation, beginning of year

   $ 3,721   $ 3,180  

Service cost

     54     58  

Interest cost

     132     121  

Benefits paid

     (107 )   (104 )

Actuarial loss

     255     381  

Exchange rate (gain) loss

     28     85  
           
​ ​ ​ ​ ​ ​ ​ ​

Projected benefit obligation, end of year

     4,083     3,721  

Fair value of plan assets, end of year

     —     —  
           
​ ​ ​ ​ ​ ​ ​ ​

Underfunded status, end of year

   $ (4,083 ) $ (3,721 )
           
​ ​ ​ ​ ​ ​ ​ ​

Discount rate

     3.6 %   3.9 %

Rate of pay increases

     3.0 %   3.0 %
Schedule of components of net periodic benefit cost

 

 

 
   Fiscal year ended  
 
   March 1,
2014		   March 2,
2013		   February 25,
2012		  

Components of net periodic benefit cost:

                    

Defined benefit plans:

                    

Service cost

   $ 54   $ 58   $ 55  

Interest cost

     132     121     129  

Amortization of unrecognized net loss

     35     21     3  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Net periodic benefit cost for defined benefit plan

     221     200     187  

Defined contribution plans

     2,243     2,834     2,809  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Total net periodic benefit cost

   $ 2,464   $ 3,034   $ 2,996  
               
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​