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Long-Term Liabilities (Tables)
 12 Months Ended
May. 31, 2015
Debt Disclosure [Abstract]  
Summary of Long-Term Liabilities Consisting of Other Deferred Liabilities and Life Insurance Loans

Long-term liabilities, consisting of other deferred liabilities and life insurance loans, include the following:

 

     May 31,  
     2015      2014  
     (Dollars in thousands)  

Other deferred liabilities:

      

Deferred compensation expense

    $ 5,237       $ 5,386   

Accrued warranty and related expenses

      2,400         2,000   
  

 

 

     

 

 

  

Total other deferred liabilities

      7,637         7,386   

Life insurance loans

      4,312         6,334   
  

 

 

     

 

 

  
   $ 11,949       $ 13,720