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| | | <ShortName> Income Taxes (Schedule Of Deferred Taxes) (Details) </ShortName> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
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| | | <ShortName> Commitments And Contingencies (Narrative) (Details) </ShortName> |
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| | | <LongName> 41002 - Disclosure - Commitments And Contingencies (Schedule Of Future Minimum Lease Payments) (Details) </LongName> |
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| | | <Role> http://syntroleum.com/role/DisclosureCommitmentsAndContingenciesScheduleOfFutureMinimumLeasePaymentsDetails </Role> |
| | | <ShortName> Commitments And Contingencies (Schedule Of Future Minimum Lease Payments) (Details) </ShortName> |
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| | | <ShortName> Significant Customers (Details) </ShortName> |
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| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
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| | | <ShortName> Segment Information (Details) </ShortName> |
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| | <Log type="Info"> Element us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights had a mix of decimals attribute values: -4 0. </Log> |
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| | <Log type="Info"> 'Shares' elements on report '00300 - Statement - Consolidated Statements Of Stockholders' Equity (Deficit)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '00400 - Statement - Consolidated Statements Of Cash Flows' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '40201 - Disclosure - Operations And Liquidity (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '40701 - Disclosure - Stockholders' Equity (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> 'Monetary' elements on report '40901 - Disclosure - Income Taxes (Narrative) (Details)' had a mix of different decimal attribute values. </Log> |
| | <Log type="Info"> Process Flow-Through: 00100 - Statement - Consolidated Balance Sheets </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Mar. 01, 2013' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Dec. 31, 2010' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column 'Dec. 31, 2009' </Log> |
| | <Log type="Info"> Process Flow-Through: 00105 - Statement - Consolidated Balance Sheets (Parenthetical) </Log> |
| | <Log type="Info"> Process Flow-Through: 00200 - Statement - Consolidated Statements Of Operations </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2012' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2012' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2012' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2012' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2011' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2011' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2011' </Log> |
| | <Log type="Info"> Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2011' </Log> |
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| | <Log type="Info"> Process Flow-Through: 00400 - Statement - Consolidated Statements Of Cash Flows </Log> |
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| | <File> synm-20121231_lab.xml </File> |
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| <SupplementalFiles/> |
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