|
INCOME TAXES Narrative (Details) (USD $)
|
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2012
|
Jun. 30, 2011
|
Jun. 30, 2012
|
Jun. 30, 2011
|
|
| Tax disclosures [Line Items] | ||||
| Gain on legal settlement | $ 28,738,000 | $ 0 | $ 28,738,000 | $ 0 |
| Income tax expense | 16,261,000 | 5,167,000 | 19,732,000 | 8,814,000 |
|
Grace Energy Corporation Matter [Member]
|
||||
| Tax disclosures [Line Items] | ||||
| Gain on legal settlement | 28,700,000 | |||
| Income tax expense | 10,100,000 | |||
|
Canada 1 [Member]
|
||||
| Tax disclosures [Line Items] | ||||
| Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority | 1,000,000 | 1,000,000 | ||
| Income Tax Examination, Penalties and Interest Expense | 2,200,000 | |||
| Income Tax Examination, Year(s) under Examination | 2006 through 2011 | |||
|
Canada 2 [Member]
|
||||
| Tax disclosures [Line Items] | ||||
| Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority | 1,300,000 | 1,300,000 | ||
| Income Tax Examination, Penalties and Interest Expense | $ 700,000 | |||
| Income Tax Examination, Year(s) under Examination | 2003 to 2009 | |||