Information concerning financial reporting for segments and operations in different geographical areas (Details 2) (USD $) In Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Segment EBITDA/earnings reconciliation:
Segment EBITDA	$ (24,450)	$ 2,589	$ 13,338	$ 30,909
Less:
Depreciation, depletion and amortization	11,968	11,685	34,989	34,268
Interest expense, net	12,951	8,028	33,576	22,138
Foreign currency, net	4,768	(3,200)	2,629	(2,982)
(Benefit from)/provision for income taxes	(5,796)	8,762	(1,182)	15,967
Share of provision for income taxes of unconsolidated companies	985	538	1,422	1,100
Losses from continuing operations	$ (49,326)	$ (23,224)	$ (58,096)	$ (39,582)

This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, before interest, income taxes, foreign currency and depreciation and amortization.

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- Definition

Represents the income tax expense or benefit from the entity's proportionate share for the period, of the net income (loss), of its investee (such as unconsolidated subsidiaries and joint ventures), to which the equity method of accounting is applied.

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- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 45

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-Subparagraph (b)

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- Definition

The aggregate foreign currency transaction gain (loss) (both realized and unrealized) included in determining net income for the reporting period. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 20

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- Definition

This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, and noncontrolling interest.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 29

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6515339

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The net amount of nonoperating interest income (expense).

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