Operations And Liquidity	12 Months Ended
Operations And Liquidity	Dec. 31, 2012
Operations And Liquidity [Abstract]
Operations And Liquidity	2. OPERATIONS AND LIQUIDITY In the past we have sustained recurring losses and negative cash flows from operations. As of December 31, 2012, we had approximately $15.9 million of cash and cash equivalents available to fund operations and investing activities. We review cash flow forecasts and budgets periodically. Based on production levels and gross margins from the sale of finished goods and upon working capital and capital expenditures requirements for the Dynamic Fuels plant, we expect to receive partner distributions from Dynamic Fuels at some indeterminate time in the future. On February 15, 2013, Syntroleum made an additional $2.3 million working capital loan to Dynamic Fuels. Tyson made an additional $2.3 million working capital loan (for a total of $4.6 million) on February 19, 2013. On March 1, 2013, Syntroleum received $5,798,000 from sales proceeds of its nominal two b/d pilot plant located in Tulsa, Oklahoma. On June 8, 2012, the Company received a Nasdaq Staff Deficiency Letter, indicating the Company's stock had closed below the minimum $1.00 per share requirement for continued inclusion under the marketplace Rule 5500(a)(2). We were provided 180 calendar days, or until December 5, 2012 to regain compliance. On December 6, 2012, the Company received a Nasdaq notification indicating we were eligible for an additional 180 calendar day compliance period or until June 3, 2013 to regain compliance. Their determination was based on our meeting the continued listing requirement for market value of publicly held shares and all other applicable requirements for initial listing on the Capital market with the exception of the bid price requirement, and our written notice of our intention to cure the deficiency during the second compliance period by effecting a reverse stock split, if necessary. The Company is involved in certain claims and legal proceedings arising in the ordinary course of business. Management believes there will not be any liability from the resolution of these proceedings and any liability will not have a material adverse effect on the Company's financial condition, future results of operations or liquidity.

Disclosure of accounting policy for reporting when there is a substantial doubt about an entity's ability to continue as a going concern for a reasonable period of time (generally a year from the balance sheet date). Disclose: (a) pertinent conditions and events giving rise to the assessment of substantial doubt about the entity's ability to continue as a going concern for a reasonable period of time, (b) the possible effects of such conditions and events, (c) management's evaluation of the significance of those conditions and events and any mitigating factors, (d) possible discontinuance of operations, (e) management's plans (including relevant prospective financial information), and (f) information about the recoverability or classification of recorded asset amounts or the amounts or classification of liabilities. If management's plans alleviate the substantial doubt about the entity's ability to continue as a going concern, disclosure of the principal conditions and events that initially raised the substantial doubt about the entity's ability to continue as a going concern would be expected to be considered. Disclose whether operations for the current or prior years generated sufficient cash to cover current obligations, whether waivers were obtained from creditors relating to the company's default under the provisions of debt agreements and possible effects of such conditions and events, such as: whether there is a possible need to obtain additional financing (debt or equity) or to liquidate certain holdings to offset future cash flow deficiencies. Disclose appropriate parent company information when parent is dependent upon remittances from subsidiaries to satisfy its obligations.

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