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Inventories (Schedule Of Inventories) (Details) (USD $)
In Thousands, unless otherwise specified
May 31, 2014
Aug. 31, 2013
May 31, 2013
Inventories [Abstract]      
Raw materials and supplies $ 21,509 $ 19,369 $ 17,949
Work in process 7,973 5,665 7,227
Finished goods and purchased parts 55,798 50,038 54,332
Total inventory value before LIFO adjustment 85,280 75,072 79,508
Less adjustment to LIFO value (6,270) (6,465) (7,050)
Inventories, net $ 79,010 $ 68,607 $ 72,458