General	12 Months Ended
Dec. 31, 2014
General, Debtors Condensed Combined Financial Statements And Guarantor Subsidiaries [Abstract]
General	Note 1 – General Description of Business Endeavour International Corporation is an independent oil and gas company engaged in the exploration, development, production and acquisition of energy reserves in the U.S. and U.K. Endeavour was incorporated under the laws of the state of Nevada on January 13, 2000. As used in these Notes to Consolidated Financial Statements, the terms “Endeavour,” “Company,” “we,” “us,” “our” and similar terms refer to Endeavour International Corporation and, unless the context indicates otherwise, its consolidated subsidiaries. Bankruptcy Cases On October 10, 2014, (the “Petition Date”), Endeavour and certain of its wholly owned U.S. subsidiaries - Endeavour Operating Corporation, Endeavour Colorado Corporation, Endeavour Energy New Ventures Inc., and END Management Company - and one of its foreign subsidiaries - Endeavour Energy Luxembourg S.à.r.l. (collectively, the “Debtors”) - filed voluntary petitions under Chapter 11 of the United States Bankruptcy Code (the “Bankruptcy Code”) in the United States Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”). The Chapter 11 cases are being jointly administered by the Bankruptcy Court as Case No. 14-12308 (the “Bankruptcy Cases”). See Note 3 – Voluntary Reorganization Under Chapter 11 for a discussion of the Bankruptcy Cases. Going Concern Our accompanying consolidated financial statements were prepared assuming that we will continue as a going concern, which contemplates realization of assets and the satisfaction of liabilities in the normal course of business for the twelve month period following the date of these consolidated financial statements. However, as a result of our Bankruptcy Cases and other matters described herein, including the uncertainties related to confirmation of the RSA Plan (see Note 3 - Voluntary Reorganization under Chapter 11) and the anticipated breach of our leverage covenant under our Amended Term Loan Facility applicable to our U.K. subsidiary in or about the third quarter of 2015 (see Note 3 – Voluntary Reorganization Under Chapter 11 and Note 12 – Debt Obligations), there is substantial doubt about our ability to continue as a going concern. We continue to have discussions with certain of our creditors and their advisors and the advisors to the Official Committee of Unsecured Creditors appointed by the Bankruptcy Court concerning the impact of the price declines that began in late 2014 on the RSA Plan and potential amendments thereto and to the RSA. Additionally, we have and continue to engage in discussions with certain of our U.S. and U.K. creditors regarding the possibility of raising new capital to reduce the principal amount of outstanding indebtedness under the Amended Term Loan Facility in an amount adequate to avoid a potential default of the leverage covenant, refinancing all or a portion of the Amended Term Loan Facility, or obtaining a waiver or amendment from the lenders under the Amended Term Loan Facility prior to any default thereunder. Our ability to continue as a going concern is dependent on many factors, including, among other things: (i) the cost, duration and outcome of the Bankruptcy Cases; (ii) our ability to maintain adequate cash on hand and generate cash from operations; (iii) our ability to maintain compliance with debt covenant requirements of the Amended Term Loan Facility; and (iv) our ability to achieve profitability following a restructuring. The accompanying consolidated financial statements do not include any adjustments that might be necessary if our actions to address these factors are not successful.

Note 1 – General

Description of Business

Endeavour International Corporation is an independent oil and gas company engaged in the exploration, development, production and acquisition of energy reserves in the U.S. and U.K. Endeavour was incorporated under the laws of the state of Nevada on January 13, 2000. As used in these Notes to Consolidated Financial Statements, the terms “Endeavour,” “Company,” “we,” “us,” “our” and similar terms refer to Endeavour International Corporation and, unless the context indicates otherwise, its consolidated subsidiaries.

Bankruptcy Cases

On October 10, 2014, (the “Petition Date”), Endeavour and certain of its wholly owned U.S. subsidiaries - Endeavour Operating Corporation, Endeavour Colorado Corporation, Endeavour Energy New Ventures Inc., and END Management Company - and one of its foreign subsidiaries - Endeavour Energy Luxembourg S.à.r.l. (collectively, the “Debtors”) - filed voluntary petitions under Chapter 11 of the United States Bankruptcy Code (the “Bankruptcy Code”) in the United States Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”). The Chapter 11 cases are being jointly administered by the Bankruptcy Court as Case No. 14-12308 (the “Bankruptcy Cases”). See Note 3 – Voluntary Reorganization Under Chapter 11 for a discussion of the Bankruptcy Cases.

Going Concern

Our accompanying consolidated financial statements were prepared assuming that we will continue as a going concern, which contemplates realization of assets and the satisfaction of liabilities in the normal course of business for the twelve month period following the date of these consolidated financial statements. However, as a result of our Bankruptcy Cases and other matters described herein, including the uncertainties related to confirmation of the RSA Plan (see Note 3 - Voluntary Reorganization under Chapter 11) and the anticipated breach of our leverage covenant under our Amended Term Loan Facility applicable to our U.K. subsidiary in or about the third quarter of 2015 (see Note 3 – Voluntary Reorganization Under Chapter 11 and Note 12 – Debt Obligations), there is substantial doubt about our ability to continue as a going concern.

We continue to have discussions with certain of our creditors and their advisors and the advisors to the Official Committee of Unsecured Creditors appointed by the Bankruptcy Court concerning the impact of the price declines that began in late 2014 on the RSA Plan and potential amendments thereto and to the RSA. Additionally, we have and continue to engage in discussions with certain of our U.S. and U.K. creditors regarding the possibility of raising new capital to reduce the principal amount of outstanding indebtedness under the Amended Term Loan Facility in an amount adequate to avoid a potential default of the leverage covenant, refinancing all or a portion of the Amended Term Loan Facility, or obtaining a waiver or amendment from the lenders under the Amended Term Loan Facility prior to any default thereunder.

Our ability to continue as a going concern is dependent on many factors, including, among other things: (i) the cost, duration and outcome of the Bankruptcy Cases; (ii) our ability to maintain adequate cash on hand and generate cash from operations; (iii) our ability to maintain compliance with debt covenant requirements of the Amended Term Loan Facility; and (iv) our ability to achieve profitability following a restructuring. The accompanying consolidated financial statements do not include any adjustments that might be necessary if our actions to address these factors are not successful.