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Long-Term Liabilities (Tables)
 12 Months Ended
May 31, 2014
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,  
     2014      2013  
     (Dollars in thousands)  

Other deferred liabilities:

      

Deferred compensation expense

    $ 5,386       $ 5,869   

Accrued warranty and related expenses

      2,000         2,200   
  

 

 

     

 

 

  

Total other deferred liabilities

      7,386         8,069   

Life insurance loans

      6,334         —   
  

 

 

     

 

 

  
   $ 13,720       $ 8,069