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Inventories (Tables)

3 Months Ended

May 31, 2012

Inventories [Abstract]

Schedule Of Inventories

		May 31,			May 31,			August 31,
$ in thousands		2012			2011			2011
Inventory:
FIFO inventory		$	29,296		$	25,720		$	22,614
LIFO reserves			(6,996)			(6,874)			(7,178)
LIFO inventory			22,300			18,846			15,436
Weighted average inventory			21,465			21,743			20,848
Other FIFO inventory			20,359			14,434			15,407
Obsolescence reserve			(2,005)			(2,190)			(2,167)
Total inventories		$	62,119		$	52,833		$	49,524

Schedule Of Estimated Percentage Distribution

		May 31,			May 31,			August 31,
		2012			2011			2011
Raw materials			15%			14%			14%
Work in process			9%			9%			8%
Finished goods and purchased parts			76%			77%			78%

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Percentage Distribution Between Major Classes Of Inventory [Text Block]

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- Definition

Tabular disclosure of the carrying 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 2

-Paragraph 6

-Subparagraph a,b,c

-Article 5

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