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Business Segments And Foreign Operations (Schedule Of Net Sales By Product Line) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
May 31, 2013
May 31, 2012
May 31, 2013
May 31, 2012
Revenue from External Customer [Line Items]        
Net sales $ 93,103 $ 87,022 $ 275,079 $ 257,933
Multi-purpose maintenance products [Member]
       
Revenue from External Customer [Line Items]        
Net sales 82,150 73,666 239,343 215,886
Homecare and cleaning products [Member]
       
Revenue from External Customer [Line Items]        
Net sales $ 10,953 $ 13,356 $ 35,736 $ 42,047