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Inventories (Schedule Of Inventories) (Details) - USD ($)
$ in Thousands
Nov. 30, 2015
Aug. 31, 2015
Nov. 30, 2014
Inventories [Abstract]      
Raw materials and supplies $ 26,611 $ 29,427 $ 21,006
Work in process 8,623 7,318 9,343
Finished goods and purchased parts 48,569 44,269 54,015
Total inventory value before LIFO adjustment 83,803 81,014 84,364
Less adjustment to LIFO value (5,557) (6,084) (7,354)
Inventories, net $ 78,246 $ 74,930 $ 77,010