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Inventories (Schedule Of Inventories) (Details) - USD ($)
$ in Thousands
Feb. 28, 2017
Aug. 31, 2016
Feb. 29, 2016
Inventories [Abstract]      
Raw materials and supplies $ 27,368 $ 26,599 $ 24,663
Work in process 7,570 5,742 8,714
Finished goods and purchased parts 53,587 47,805 53,217
Total inventory value before LIFO adjustment 88,525 80,146 86,594
Less adjustment to LIFO value (5,678) (5,396) (4,516)
Inventories, net $ 82,847 $ 74,750 $ 82,078