v2.4.0.6

INCOME TAXES Narrative (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2012 Grace Energy Corporation Matter [Member]	Sep. 30, 2012 Grace Energy Corporation Matter [Member]	Sep. 30, 2012 Canada Audit 1 [Member]	Sep. 30, 2012 Canada Audit 1 [Member] Year 1 [Member]	Sep. 30, 2012 Canada Audit 1 [Member] Year 2 [Member]	Sep. 30, 2012 Canada Audit 1 [Member] Year 3 [Member]	Sep. 30, 2012 Canada Audit 1 [Member] Year 4 [Member]	Sep. 30, 2012 Canada Audit 1 [Member] Year 5 [Member]	Sep. 30, 2012 Canada Audit 1 [Member] Year 6 [Member]	Sep. 30, 2012 Canada Audit 2 [Member]	Sep. 30, 2012 Canada Audit 2 [Member] Year 1 [Member]	Sep. 30, 2012 Canada Audit 2 [Member] Year 2 [Member]	Sep. 30, 2012 Canada Audit 2 [Member] Year 3 [Member]	Sep. 30, 2012 Canada Audit 2 [Member] Year 4 [Member]	Sep. 30, 2012 Canada Audit 2 [Member] Year 5 [Member]	Sep. 30, 2012 Canada Audit 2 [Member] Year 6 [Member]	Sep. 30, 2012 Canada Audit 2 [Member] Year 7 [Member]
Tax disclosures [Line Items]
Gain on legal settlement	$ 0	$ 0	$ 28,738,000	$ 0	$ 28,700,000
Income tax expense	622,000	4,497,000	20,354,000	13,311,000		10,100,000
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority							1,000,000							1,300,000
Income Tax Examination, Penalties and Interest Expense							$ 2,200,000							$ 700,000
Income Tax Examination, Year under Examination								2006	2007	2008	2009	2010	2011		2003	2004	2005	2006	2007	2008	2009

X

- Definition

Represents the amount of income or expense recognized in the period to settle pending or threatened litigation.

+ References

No definition available.

+ Details

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X

- Details

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X

- Definition

The amount of the additional liability or refund received or expected based on a final settlement with a taxing authority.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)

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- Definition

The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

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X

- Definition

Tax year being audited in the income tax examination, in CCYY format.

+ References

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X

- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a),(b)

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 109

-Paragraph 45

-Subparagraph a, b

-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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-Name Accounting Standards Codification

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-Subparagraph (SX 210.4-08.(h))

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-Number 210

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-Paragraph h

-Article 4



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