2.4.0.82206201 - Disclosure - Financial Instruments Financial Instruments (Policies)truefalsefalse1falsefalsefalseD2013Q2YTDhttp://www.sec.gov/CIK0001489136duration2013-01-01T00:00:002013-06-30T00:00:001true1us-gaap_FairValueDisclosuresAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse02false2us-gaap_FairValueOfFinancialInstrumentsPolicyus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">“Level 1” measurements use as inputs unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. These include commodity futures contracts that are traded on an exchange. These also include common stock warrants (Note 10) which are traded on the New York Stock Exchange.</font></div><div style="line-height:120%;padding-top:12px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">“Level 2” measurements use as inputs market observable and corroborated prices for similar commodity derivative contracts. Assets and liabilities classified as Level 2 include over-the-counter (“OTC”) traded forward contracts and swaps.</font></div><div style="line-height:120%;padding-top:12px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">“Level 3” measurements use as inputs information from a pricing service and internal valuation models incorporating observable and unobservable market data. These may include commodity derivatives, such as forwards and swaps for which there is not a highly liquid market, and therefore are not included in Level 2. </font></div><div style="line-height:120%;padding-top:12px;padding-left:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Financial assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the measurement requires judgment and may affect the valuation of assets and liabilities and their placement within the fair value levels. At </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">June 30, 2013</font><font style="font-family:inherit;font-size:10pt;">, all of our physical fixed price forward purchases and sales contracts were being accounted for as normal purchases and normal sales.</font></div></div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for determining the fair value of financial instruments.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2155942
Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 8, 10, 12, 13, 14
-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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