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
6 Months Ended
Feb. 29, 2012
Feb. 28, 2011
Product Warranty Costs [Abstract]    
Beginning balance $ 23,707 $ 7,868
Purchase accounting adjustments (7,726)  
Warranty reserves of acquired business 43 10,870
Provision for warranties 5,393 4,802
Warranty payments and costs incurred (5,640) (2,450)
Impact of changes in foreign currency rates (1,109) 652
Ending balance $ 14,668 $ 21,742