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Business Segments and Foreign Operations (Details 1) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Aug. 31, 2012
Aug. 31, 2011
Aug. 31, 2010
Net Sales by Product Line:      
Net sales $ 342,784 $ 336,409 $ 321,516
Multi-Purpose Maintenance Products [Member]
     
Net Sales by Product Line:      
Net sales 286,480 278,763 258,095
Homecare And Cleaning Products [Member]
     
Net Sales by Product Line:      
Net sales $ 56,304 $ 57,646 $ 63,421