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Derivative Financial Instruments (Details) (USD $) | 3 Months Ended |  | 3 Months Ended |  |  |  | 1 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2012 | Mar. 31, 2011 | Apr. 13, 2011 CRNF Term loan facility | Mar. 31, 2012 Other derivative agreements | Mar. 31, 2011 Other derivative agreements | Mar. 31, 2012 Commodity derivatives | Mar. 31, 2012 Commodity swap | Mar. 31, 2012 Designated as hedges Interest rate swap agreements entered into on June 30, 2011 CRNF D | Mar. 31, 2012 Designated as hedges Interest rate swap agreements entered into on July 1, 2011 CRNF D | Mar. 31, 2012 Designated as hedges Interest rate swap agreements CRNF | Jul. 01, 2011 Designated as hedges Interest rate swap agreements CRNF agreement | Jun. 30, 2011 Designated as hedges Interest rate swap agreements CRNF agreement | Mar. 31, 2012 Not designated as hedges Commodity derivative contracts entered into during September 2011 barrel | Jun. 30, 2010 Not designated as hedges Interest rate swap agreements CRLLC
Derivative Financial Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |
Realized gain (loss) |  |  |  | $ (19,086,000) | $ (18,848,000) |  |  |  |  |  |  |  |  |
Unrealized gain (loss) | (128,167,000) | (3,258,000) |  | (128,167,000) | (3,258,000) | 200,000 | 128,300,000 |  |  |  |  |  |  |
Realized gain (loss) | (19,086,000) | (18,848,000) |  | (147,253,000) | (22,106,000) |  | 10,900,000 |  |  |  |  |  |  |
Number of barrels |  |  |  |  |  |  |  |  |  |  |  |  | 17,700,000 |
Net liability |  |  |  |  |  |  |  |  |  |  |  |  | 47,900,000 |
Portion of net unrealized loss in current liabilities |  |  |  |  |  |  |  |  |  |  |  |  | 42,800,000 |
Portion of net unrealized loss in long-term liabilities |  |  |  |  |  |  |  |  |  |  |  |  | 5,200,000 |
Portion of net unrealized gain (loss) in current assets |  |  |  |  |  | 700,000 |  |  |  |  |  |  | (100,000) |
Realized loss |  |  |  |  |  | 8,200,000 |  |  |  |  |  |  |  |
Number of agreements |  |  |  |  |  |  |  |  |  |  | 2 | 2 |  |
Borrowing capacity on credit facility |  |  | 125,000,000 |  |  |  |  |  |  | 125,000,000 |  |  |  |
Aggregate notional amount |  |  |  |  |  |  |  |  |  | 62,500,000 |  |  |  |
Floating rate basis |  |  |  |  |  |  |  | Three months LIBOR | Three months LIBOR |  |  |  |  | Three months LIBOR
Fixed rate (as a percent) |  |  |  |  |  |  |  | 1.94% | 1.975% |  |  |  |  |
Settlement period (in days) |  |  |  |  |  |  |  | 90 | 90 |  |  |  |  |
Average fixed rate of interest (as a percent) |  |  |  |  |  |  |  |  |  | 1.96% |  |  |  |
Effective rate (as a percent) |  |  |  |  |  |  |  |  |  | 4.60% |  |  |  |
Interest expense |  |  |  |  |  |  |  |  |  | $ 200,000 |  |  |  |

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- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5618551-113959 + Details
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- Definition The net gain (loss) during the reporting period due to ineffectiveness in interest rate cash flow hedges. Recognized in earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph b(1) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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