Pension Plan (Tables)
 3 Months Ended
May 31, 2016
Compensation and Retirement Disclosure [Abstract]  
Summary of Pension Expense Composed of Components Included in Cost of Goods Sold and Selling, General and Administrative Expenses

Pension expense is composed of the following components included in cost of goods sold and selling, general and administrative expenses in the Company’s consolidated statements of earnings (in thousands):

 

     Three months ended
May 31,		  
     2016      2015  

Components of net periodic benefit cost

      

Service cost

    $ 291       $ 325   

Interest cost

      593         592   

Expected return on plan assets

      (916 )       (982 ) 

Amortization of:

      

Prior service cost

      —           (21 ) 

Unrecognized net loss

      671         638   
  

 

 

     

 

 

  

Net periodic benefit cost

    $ 639       $ 552