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Inventories (Schedule Of Inventories) (Details) (USD $) In Thousands, unless otherwise specified	Nov. 30, 2014	Aug. 31, 2014	Nov. 30, 2013
Inventories [Abstract]
Raw materials and supplies	$ 21,006us-gaap_InventoryRawMaterialsAndSupplies	$ 19,953us-gaap_InventoryRawMaterialsAndSupplies	$ 20,386us-gaap_InventoryRawMaterialsAndSupplies
Work in process	9,343us-gaap_InventoryWorkInProcess	9,990us-gaap_InventoryWorkInProcess	7,045us-gaap_InventoryWorkInProcess
Finished goods and purchased parts	54,015us-gaap_InventoryFinishedGoods	48,300us-gaap_InventoryFinishedGoods	54,540us-gaap_InventoryFinishedGoods
Total inventory value before LIFO adjustment	84,364us-gaap_InventoryGross	78,243us-gaap_InventoryGross	81,971us-gaap_InventoryGross
Less adjustment to LIFO value	(7,354)us-gaap_InventoryLIFOReserve	(6,547)us-gaap_InventoryLIFOReserve	(6,357)us-gaap_InventoryLIFOReserve
Inventories, net	$ 77,010us-gaap_InventoryNet	$ 71,696us-gaap_InventoryNet	$ 75,614us-gaap_InventoryNet

X

- Definition

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

+ References

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount of difference between inventory at lower of LIFO cost or market and inventory at lower of other inventory accounting method cost or market, for example, but not limited to, FIFO or average cost.

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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