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Warranty (Tables)
6 Months Ended
Nov. 30, 2013
Guarantees [Abstract]  
Reconciliation of Accrued Warranty and Related Expenses

A reconciliation of accrued warranty and related expenses is as follows:

 

     Six-Months Ended  
     November 30,  
     2013     2012  
     (Dollars in thousands)  

Balance at the beginning of the period

   $ 5,882      $ 5,870   

Accruals for warranties

     2,786        3,197   

Settlements made during the period

     (2,513     (2,653
  

 

 

   

 

 

 

Balance at the end of the period

     6,155        6,414   

Non-current balance included in other deferred liabilities

     2,200        2,000   
  

 

 

   

 

 

 

Accrued warranty and related expenses

   $ 3,955      $ 4,414