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Inventories (Tables)

3 Months Ended

Mar. 31, 2015

Inventory, Net [Abstract]

Schedule of Inventories

Inventories consist of the following:	March 31, 2015			December 31, 2014
Raw materials	$	98,993		$	78,599
Work-in-process	32,190			33,941
Finished goods	4,492			19,969
Operating and other supplies	162,139			150,971
Total inventories	$	297,814		$	283,480

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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 FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766



Reference 2: 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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