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Inventories (Tables)

12 Months Ended

Dec. 31, 2011

Inventory, Net [Abstract]

Inventories

Inventories, at December 31, consist of the following:

		2011				2010
Raw materials		$	41,142			$	49,098
Work-in-process			15,548				13,979
Finished goods			10,535				7,901
Operating and other supplies			104,736				84,930
Inventories		$	171,961			$	155,908

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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

-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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