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Derivative Financial Instruments (Details 2) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Refining LLC |  |
Offsetting assets |  |
Gross Non-Current Assets | $ 1,463 | $ 945
Gross Amounts Offset | (2) | (7)
Net Non-Current Assets Presented | 1,461 | 938
Net Amount | 1,461 | 938
Offsetting liabilities |  |
Gross Current Liabilities | 54,839 | 74,199
Gross Amounts Offset | (19,058) | (6,452)
Net Current Liabilities Presented | 35,781 | 67,747
Cash Collateral Not Offset | (251) | (14)
Net Amount | 35,530 | 67,733
Commodity Swaps | Refining LLC |  |
Offsetting assets |  |
Gross Non-Current Assets | 1,463 | 945
Gross Amounts Offset | (2) | (7)
Net Non-Current Assets Presented | 1,461 | 938
Net Amount | 1,461 | 938
Offsetting liabilities |  |
Gross Current Liabilities | 54,588 | 74,178
Gross Amounts Offset | (19,058) | (6,445)
Net Current Liabilities Presented | 35,530 | 67,733
Net Amount | 35,530 | 67,733
Other Derivative Activity | Refining LLC |  |
Offsetting liabilities |  |
Gross Current Liabilities | 251 | 21
Gross Amounts Offset |  | (7)
Net Current Liabilities Presented | 251 | 14
Cash Collateral Not Offset | (251) | (14)
Interest rate swap |  |
Offsetting liabilities |  |
Gross Amounts Offset | $ 0 | $ 0

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- Definition Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FIN39-1 -Paragraph 10A, 10B -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 4, 17 -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13495-108611 + Details
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- Definition The amount of the right to reclaim cash collateral under master netting arrangements that have not been offset against net derivative instrument positions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41678-113959 + Details
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