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
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- 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) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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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 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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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. + 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) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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