Quarterly report pursuant to Section 13 or 15(d)

Product Warranty Costs (Rollforward Of Accrued Product Warranty Reserve) (Details)

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Product Warranty Costs (Rollforward Of Accrued Product Warranty Reserve) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Nov. 30, 2011
Nov. 30, 2010
Product Warranty Costs [Abstract]    
Beginning balances $ 23,707 $ 7,868
Purchase accounting adjustment (5,719)  
Provision for warranties 2,491 1,359
Warranty payments and costs incurred (2,903) (1,565)
Impact of changes in foreign currency rates (1,109) 105
Ending balances $ 16,467 $ 7,767