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Inventories (Tables)

3 Months Ended

Nov. 30, 2011

Inventories [Abstract]

Schedule Of Inventories

			September 30,				September 30,				September 30,
		November 30,				November 30,				August 31,
$ in thousands		2011				2010				2011
Inventory:
FIFO inventory		$	29,604			$	24,356			$	22,614
LIFO reserves			(7,178	)			(6,305	)			(7,178	)
LIFO inventory			22,426				18,051				15,436
Weighted average inventory			21,768				19,098				20,848
Other FIFO inventory			15,692				18,184				15,407
Obsolescence reserve			(2,240	)			(2,186	)			(2,167	)
Total inventories		$	57,646			$	53,147			$	49,524

Schedule Of Percentage Distribution

			September 30,				September 30,				September 30,
		November 30,				November 30,				August 31,
		2011				2010				2011
Raw materials			17	%			13	%			14	%
Work in process			6	%			7	%			8	%
Finished goods and purchased parts			77	%			80	%			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.

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

-Topic

-SubTopic

-Publisher SEC

-Number 210

-Article 5

-Subparagraph a,b,c

-Name Regulation S-X (SX)

-Paragraph 6

-Section 2

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