Annual report pursuant to Section 13 and 15(d)

Changes in Projected Benefit Obligations, Fair Value of Plan Assets and Funded Status of Defined Benefit Pension Plans (Detail)

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Changes in Projected Benefit Obligations, Fair Value of Plan Assets and Funded Status of Defined Benefit Pension Plans (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Aug. 31, 2013
Aug. 31, 2012
Aug. 31, 2011
Reconciliation of benefit obligations:      
Interest cost $ 1,928 $ 2,162 $ 2,108
Reconciliation of plan assets:      
Fair value of plan assets at beginning of year 33,695    
Fair value of plan assets at end of year 34,054 33,695  
U.S. defined benefit pension plans
     
Reconciliation of benefit obligations:      
Benefit obligation at beginning of year 50,870 44,430  
Adjustment (280) 0  
Interest cost 1,928 2,162  
Actuarial (gain) loss (4,983) 6,855  
Benefits paid (2,489) (2,577)  
Benefit obligation at end of year 45,046 50,870  
Reconciliation of plan assets:      
Fair value of plan assets at beginning of year 33,695 32,412  
Actual return on plan assets 2,252 2,911  
Company contributions 596 949  
Benefits paid from plan assets (2,489) (2,577)  
Fair value of plan assets at end of year 34,054 33,695  
Funded status of the plans (underfunded) $ (10,992) $ (17,175)