Endeavour International 10-Q 7 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Aug. 01, 2015
Document And Entity Information [Abstract]
Document type	10-Q
Document period end date	Jun. 30, 2015
Amendment flag	false
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2,015
Current fiscal year end date	--12-31
Entity central index key	1,112,412
Entity filer category	Accelerated Filer
Entity registrant name	Endeavour International Corporation
Entity Common Stock, Shares Outstanding		52,800,000

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current Assets:
Cash and cash equivalents	$ 48,514	$ 81,850
Accounts receivable	52,868	35,507
Prepaid expenses and other current assets	26,425	47,397
Total Current Assets	127,807	164,754
Property and Equipment, Net (None and $10,784 not subject to amortization at June 30, 2015 and December 31, 2014 respectively)	229,781	469,509
Restricted Cash, Long-Term Portion	101,110	100,241
Other Assets	71	72
Total Assets	458,769	734,576
Current Liabilities:
Accounts payable	34,809	27,364
Current maturities of debt	434,112	432,181
Deferred revenue	40	14,157
Asset retirement obligations, current portion	18,338	40,547
Accrued expenses and other	10,990	15,196
Total Current Liabilities	498,289	529,445
Deferred Taxes	34,480	56,670
Other Liabilities	41,531	66,077
Total Liabilities Not Subject to Compromise	574,300	652,192
Liabilities Subject to Compromise	840,992	841,044
Total Liabilities	$ 1,415,292	$ 1,493,236
Commitments and Contingencies
Series C Convertible Preferred Stock:
Series C preferred stock - Liquidation preference: $14,800 and $14,800 at June 30, 2015 and December 31, 2014, respectively	$ 17,481	$ 17,481
Stockholders Equity (Deficit):
Common stock; shares issued and outstanding - 52,828 and 52,900 shares at June 30, 2015 and December 31, 2014, respectively	53	53
Additional paid-in capital	557,536	557,111
Treasury stock, at cost - 72 and 72 shares at June 30, 2015 and December 31, 2014, respectively	(587)	(587)
Accumulated deficit	(1,531,006)	(1,332,718)
Total Stockholders' Equity (Deficit)	(974,004)	(776,141)
Total Liabilities and Stockholders' Equity	458,769	734,576
Series C Preferred Stock [Member]
Series C Convertible Preferred Stock:
Series C preferred stock - Liquidation preference: $14,800 and $14,800 at June 30, 2015 and December 31, 2014, respectively	$ 17,481	$ 17,481
Series B Preferred Stock [Member]
Stockholders Equity (Deficit):
Series B preferred stock - Liquidation preference: $1,971 and $1,971 at June 30, 2015 and December 31, 2014, respectively

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parentheticals) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Property and equipment not subject to amortization	$ 0	$ 10,784
Common stock shares issued	52,828	52,900
Common stock shares outstanding	52,828	52,900
Treasury Stock	72	72
Series C Preferred Stock [Member]
Preferred stock liquidation preference	$ 14,800	$ 14,800
Series B Preferred Stock [Member]
Preferred stock liquidation preference	$ 1,971	$ 1,971

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Consolidated Statements Of Operations
Revenues	$ 71,818	$ 44,857	$ 136,147	$ 139,021
Cost of Operations:
Operating expenses	37,130	6,847	61,276	34,017
Depreciation, depletion and amortization	54,592	32,251	111,153	77,220
Impairment of oil and gas properties	42,932		133,019
Insurance proceeds	(2,046)		(10,472)
General and administrative	4,190	5,240	6,762	10,089
Total Expenses	136,798	44,338	301,738	121,326
Income (Loss) From Operations	(64,980)	519	(165,591)	17,695
Other Income (Expense):
Unrealized gains on derivatives		2,010		4,669
Interest expense	(14,366)	(31,431)	(28,717)	(62,908)
Letter of credit fees	(62)	(2,270)	(120)	(6,059)
Financing and transaction costs	(4,388)	(1,425)	(5,413)	(3,241)
Loss on early extinguishment of financing agreements				(3,543)
Litigation settlement expense				(19,034)
Reorganization items	(6,535)		(13,401)
Unrealized gain (loss) on foreign currency exchange	1,919	(4,511)	1,922	(5,784)
Other income (expense)	(715)	23	(609)	(182)
Total Other Expense	(24,147)	(37,604)	(46,338)	(96,082)
Loss Before Income Taxes	(89,127)	(37,085)	(211,929)	(78,387)
Petroleum Revenue Tax Expense (Benefit)	(1,500)	2,243	(13,641)	3,968
Corporate Tax Benefit		(2,655)		(811)
Total Tax Expense (Benefit)	(1,500)	(412)	(13,641)	3,157
Net Loss	(87,627)	(36,673)	(198,288)	(81,544)
Preferred Stock Dividends		456		911
Net Loss to Common Stockholders	$ (87,627)	$ (37,129)	$ (198,288)	$ (82,455)
Net Loss per Common Share:
Basic and Diluted	$ (1.66)	$ (0.72)	$ (3.76)	$ (1.63)
Weighted Average Number of Common Shares Outstanding:
Basic and Diluted	52,762	51,580	52,763	50,591

Condensed Consolidated Stateme5

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Cash Flows from Operating Activities:
Net loss	$ (87,627)	$ (36,673)	$ (198,288)	$ (81,544)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation, depletion and amortization	54,592	32,251	111,153	77,220
Impairment of oil and gas properties	42,932		133,019
Deferred tax benefit			(12,999)	(7,951)
Unrealized gains on derivatives		(2,010)		(4,669)
Amortization of non-cash compensation			307	2,123
Amortization of loan costs and discount			4,357	13,376
Non-cash interest expense				3,812
Loss on early extinguishment of financing agreements				6,856
Non-cash litigation settlement expense				14,034
Other			(345)	6,605
Changes in operating assets and liabilities:
Decrease (increase) in receivables			(17,361)	20,702
Decrease (increase) in other current assets			9,353	(12,887)
Increase (decrease) in liabilities			(41,334)	22,253
Net Cash Provided by (Used in) Operating Activities			(12,138)	59,930
Cash Flows From Investing Activities:
Capital expenditures			(20,329)	(39,302)
Proceeds from sale of oil and gas interests				1,352
Proceeds from insurance settlement				12,606
Increase in restricted cash			(869)	(2,521)
Net Cash Used in Investing Activities			(21,198)	(27,865)
Cash Flows From Financing Activities:
Repayments of borrowings				(115,699)
Borrowings under debt agreements, net of debt discount				140,625
Proceeds from issuance of common stock				12,336
Repayments of Monetary Production Payments				(10,833)
Financing costs paid				(9,193)
Other financing				(834)
Net Cash Provided by Financing Activities				16,402
Net Increase (Decrease) in Cash and Cash Equivalents			(33,336)	48,467
Cash and Cash Equivalents, Beginning of Period			81,850	34,742
Cash and Cash Equivalents, End of Period	$ 48,514	$ 83,209	$ 48,514	$ 83,209

General

General	6 Months Ended
	Jun. 30, 2015
General, Debtors Condensed Combined Financial Statements And Guarantor Subsidiaries [Abstract]
General	Note 1 – General Description of Business Endeavour International Corporation (“EIC”) 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 Condensed Consolidated Financial Statements, the terms “Endeavour,” “Company,” “we,” “us,” “our” and similar terms refer to EIC and, unless the context indicates otherwise, its consolidated subsidiaries. The accompanying financial statements should be read in conjunction with the audited consolidated financial statements and notes included in our Annual Report on Form 10-K for the year ended December 31, 2014 . Bankruptcy Cases On October 10, 2014, (the “Petition Date”), Endeavour and certain of its wholly owned U.S. subsidiaries - Endeavour Operating Corporation (“EOC”), Endeavour Colorado Corporation (“ECC”), 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 condensed 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 condensed consolidated financial statements. However, there is substantial doubt about our ability to continue as a going concern as a result of our Bankruptcy Cases and other matters described herein, including: · the termination of the Restructuring Support Agreement (“RSA”) on April 29, 2015 (see Note 3 - Voluntary R eorganization Under Chapter 11); · the potential breach of our leverage covenant under our Amended Term Loan Facility applicable to our U.K. subsidiary in or about the fourth quarter of 2015 (see Note 3 – Voluntary Reorganization Under Chapter 11 and Note 8 – Debt Obligations); and · entry into the APA and Settlement Agreement on August 3, 2015 (see Note 3 - Voluntary R eorganization Under Chapter 11). During the pendency of the Bankruptcy Cases, we expect that our primary sources of liquidity will continue to be cash on hand and cash flows from operations. In addition, the negative covenants under the Amended Term Loan Facility restrict us from obtaining additional capital, including limits on intercompany transfers. 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 condensed consolidated financial statements do not include any adjustments that might be necessary if our actions to address these factors are not successful.

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2015
Summary Of Significant Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	Note 2 – Summary of Significant Accounting Policies Basis of Presentation and Use of Estimates The accompanying unaudited condensed consolidated financial statements have been prepared on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and have been presented on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities in the normal course of business. The accompanying financial statements do not include any adjustments to reflect the possible future effects on the recoverability of assets or the amounts of liabilities that may result from the outcome of this uncertainty. See Note 1 – General – Going Concern. In the opinion of management, all normal recurring adjustments considered necessary for a fair presentation have been included in these financial statements. Certain amounts for prior periods have been reclassified to conform to the current presentation. U.S. GAAP requires management to use estimates, judgments and assumptions that affect the amounts of assets, liabilities, revenues and expenses reported herein. While management regularly reviews its estimates, actual results could differ from those estimates. Management believes that it is reasonably possible that the following material estimates affecting the financial statements could change in the current year: · estimates of proved oil and gas reserves; · estimates as to the expected future cash flow from proved oil and gas properties; and · estimates of future dismantlement and restoration costs. Discontinued Operations On January 1, 2015, the Company adopted the Financial Accounting Standards Board ’s ( “ FASB ” ) updated guidance on reporting discontinued operations and disclosures of disposals of components of an entity. The update amended the requirements for reporting discontinued operations , including the criteria for which discontinued operations are reported and additional disclosures about discontinued operations . The guidance applies prospectively to new disposals and new classifications of disposal groups as held for sale after the effective date. Recent Accounting Pronouncements In March 2015, the FASB issued an update to the accounting standards to simplify the presentation of debt issuance costs. The amendments in this update require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this update. The guidance is effective for interim periods and annual period beginning after December 15, 2015; however early adoption is permitted. We are currently evaluating the effect that adopting this guidance will have on our financial position, results of operations or cash flows. In May 2014, the FASB issued a new standard on revenue recognition. The new revenue recognition standard provides a five-step analysis of transactions to determine when and how revenue is recognized. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In July 2015, the FASB finalized the delay of the effective date by one year, making the new standard effective for interim periods and annual period beginning after December 15, 2017. This ASU can be adopted either retrospectively or as a cumulative-effect adjustment as of the date of adoption; however, entities that are reporting under U.S. GAAP are not permitted to adopt the standard earlier than the original effective date for public entities (that is, no earlier than 2018 for calendar year-end entities). We are currently evaluating the effect that adopting this guidance will have on our financial position, results of operations or cash flows.

Voluntary Reorganization Under

Voluntary Reorganization Under Chapter 11	6 Months Ended
	Jun. 30, 2015
Voluntary Reorganization Under Chapter 11 [Abstract]
Voluntary Reorganization Under Chapter 11	Note 3 – Voluntary Reorganization Under Chapter 11 Background On September 2, 2014, the Company announced that it had decided not to pay approximately $33.5 million in interest due on September 2, 2014 on its 12% First Priority Notes due March 2018 (“First Priority Notes”), 12% Second Priority Notes due June 2018 (“Second Priority Notes”) and 6.5% Convertible Senior Notes due November 2017 (“6.5% Convertible Senior Notes”). On October 10, 2014, the Company announced that it reached agreements with holders of more than two-thirds of its First Priority Notes, Second Priority Notes and 7.5% Convertible Bonds and its 6.5% Convertible Senior Notes and 5.5% Convertible Senior Notes (collectively, “Consenting Debt Holders”), in the form of a consensual Restructuring Support Agreement (“RSA”) that, if implemented as proposed, would significantly reduce the Company’s outstanding debt (see Note 8 – Debt Obligations). The RSA contemplated that the recapitalization of the Company would occur pursuant to a pre-arranged plan of reorganization. On the Petition Date, the Debtors filed voluntary petitions under Chapter 11 of the Bankruptcy Code in the Bankruptcy Court. Since the Petition Date, the Debtors have operated their business as “debtors-in-possession" pursuant to Sections 1107(a) and 1108 of the Bankruptcy Code, which will allow the Company to continue operations and carry on the business in the ordinary course of business during the reorganization proceedings. Each Debtor will remain in possession of its assets and properties, and its business and affairs will continue to be managed by its directors and officers, subject in each case to the supervision of the Bankruptcy Court. On the Petition Date, the Company sought, and thereafte r obtained, authority to take a broad range of actions, including, among others, authority to pay royalty interests and joint interest billings, certain employee obligations and pre-Petition contractor claims and taxes. Additionally, other orders were obtained, including adequate assurance of payment to utility companies as well as continued use of cash management systems. None of the Company’s subsidiaries incorporated in the U.K. has filed under Chapter 11. Such non-filing subsidiaries are referred to herein as “non-Debtors.” Termination of RSA and Sale of U.S. and U.K. Assets On April 29, 2015, the Debtors terminated the RSA and filed a notice with the Bankruptcy Court to withdraw its proposed plan of reorganization that had been filed to implement the terms of the RSA (the “Plan”). We determined that as a result of the decline in commodity prices, the Plan was not feasible and, accordingly, did not continue to seek its confirmation. Even if the Plan were to be confirmed, i f oil and gas prices remain at their depressed levels, we could breach our leverage covenant under our Amended Term Loan Facility applicable to our U.K. subsidiary in or about the fourth quarter of 2015, which would result in a default under the terms of the Amended Term Loan Facility. O n April 29, 2015, in light of the foregoing, the Company also filed with the Bankruptcy Court a motion to, among other things, approve the sale of substantially all of the Company’s U.S. assets and, in connection with such sale, establish bidding procedures and an auction. On June 1, 2015, the Company announced the launch of a marketing process in the U.K. for the sale of all or substantially all of our North Sea oil and gas assets. Claim by Related Party We maintained an employment agreement with Mr. William Transier that provided for certain severance benefits. Mr. Transier resigned from his positions as Chief Executive Officer and President effective December 1, 2014. Mr. Transier filed a claim with the United States Bankruptcy Court for the District of Delaware on December 16, 2014 in the amount of approximately $6.2 million . Ultimate resolution of Mr. Transier’s claims has not been determined by the Bankruptcy Court. Subsequent Event On August 3, 2015, EIC and EOC entered into an asset purchase agreement (the “APA”) with certain of the holders of our First Priority Notes and the collateral agent for the holders of such notes (the “Agent”) . Under the APA, EOC will : · sell all of the stock of EOC’s wholly-owned subsidiary, Endeavour International Holding B.V. (“EIHBV”); and · sell an intercompany note (issued to EOC by Endeavour Energy U.K Limited (“EEUK”), a subsidiary of EIHBV (the “Intercompany Note”). The purchaser will be a newly formed entity (“Newco”) which will be owned by the holders of our First Priority Notes and the lenders under our Amended Term Loan Facility. The purchase price for EIHBV and the Intercompany Note will be a credit bid of $1 and $1 in cash. The Agent holds a perfected first priority lien on the Intercompany Note and 65% of the stock of EIHBV. The closing of the APA is conditioned upon approval of the transactions by the Bankruptcy Court, the occurrence of the closing under the Settlement Agreement (defined below) and other customary conditions to closing. Under the APA, 53% of the net cash proceeds from the sale of our oil and gas assets owned by EOC, which would otherwise be paid to holders of the First Priority Notes, will be used to fund the administrative costs and expenses of the Bankruptcy Cases and any expenses incurred in connection with the subsequent dissolution of the Deb tors. To the extent such asset sale proceeds are insufficient to satisfy these expenses and the closing occurs under the APA , EEUK will fund the expenses up to an agreed-upon maximum amount. On August 3, 2015, EIC, EOC and ECC also entered into a settlement agreement (the “Settlement Agreement”) with holders of our First Priority Notes who are parties to the APA and certain lenders under the Amended Term Loan Facility, relating, among other things, to: · the allocation of proceeds from the sale of EOC’s and ECC’s U.S. oil and gas assets; · ownership of Newco; · voting rights and shareholder arrangements concerning Newco; and · certain amendments to the Amended Term Loan Facility , including changes to certain covenant ratios and maturity date (the “EEUK Amendment Documents”). Additionally, pursuant to the Settlement Agreement, EIC, EOC and ECC have agreed to restrictions on certain intercompany cash transfers. The closing of the Settlement Agreement is conditioned upon: · the execution of definitive documents regard ing the governance of Newco and the EEUK Amendment Documents; · the occurrence of the closing under the APA; and · approval by the Bankruptcy Court of the Settlement Agreement and the transactions contemplated thereby. There can be no assurance that transactions contemplated by the APA and Settlement Agreement will be consummated. If we are unable to consummate the APA and Settlement Agreement, we may be compelled into liquidation of our U.K. operations through an administration proceeding in the U.K. In addition, we are continuing our efforts to sell the assets of the Debtors to be followed by the dismissal of their Chapter 11 cases and their dissolution. On August 3, 2015, the Debtors filed with the Bankruptcy Court a motion to, among other things, request entry of an order by the Bankruptcy Court approving : · the APA and the transactions contemplated thereby ; · the Settlement Agreement and the tra nsactions contemplated thereby; · dismissal of the Debtors’ Chapter 11 cases following the sale of substantially all of the Debtors’ assets, the dissolution of the Debtors and, in the case of EIC, its dissolution without the need t o obtain stockholder approval. In connection with such events, it is expected that all common stock of the Debtors and all obligations related to the First Priority Notes, Second Priority Notes, 7.5% Convertible Bonds, 6.5% Convertible Senior Notes and 5.5% Convertible Senior Notes would be cancelled .

Debtors Condensed Combined Fina

Debtors Condensed Combined Financial Statements	6 Months Ended
	Jun. 30, 2015
Debtors Condensed Combined Financial Statements	Note 16 – Guarantor Subsidiaries Certain of our wholly-owned domestic subsidiaries have, jointly and severally, fully and unconditionally guaranteed the 2018 Notes. Pursuant to Securities and Exchange Commission (“SEC”) regulations, we have presented in columnar format the condensed consolidating financial information for EIC , the guarantor subsidiaries on a combined basis, and all non-guarantor subsidiaries on a combined basis. The subsidiary guarantees are unsecured obligations of each subsidiary guarantor and rank equally in right of payment with all senior indebtedness of that subsidiary guarantor and senior in right of payment to all subordinated indebtedness of that subsidiary guarantor. The subsidiary guarantees are effectively subordinated to any secured indebtedness of the subsidiary guarantor with respect to the assets securing the indebtedness. In addition, the subsidiary guarantees may be released in certain customary circumstances, including (i) the sale of all or substantially all of the properties or assets or a guarantor, (ii) the sale of the capital stock of a guarantor, (iii) the designation of a guarantor as an “Unrestricted Subsidiary,” (iv) upon legal defeasance of the 2018 Notes or satisfaction and discharge of the indentures governing the 2018 Notes, (v) upon the liquidation or dissolution of the guarantor or (vi) if the guarantor ceases to guarantee other of our indebtedness and ceases to be a material subsidiary, each of which is subject to important limitations in the indentures governing the 2018 Notes. Condensed consolidating financial statements for our guarantor subsidiaries and non-guarantor subsidiaries are presented in the following tables: As of June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash and cash equivalents $ - $ $ $ - $ Accounts receivable - - Current receivables due from affiliates - Prepaid expenses and other current assets - - Current Assets Property and equipment, net - - Restricted cash, long-term portion - - - Long-term receivables due from affiliates - - Investments in subsidiaries - - Other assets - - Total Assets $ $ $ $ $ Accounts payable $ - $ $ $ - $ Current maturities of debt - - - Deferred revenue - - - Current liabilities due to affiliates - Asset retirement obligations, current portion - - Accrued expenses and other - Current Liabilities Long-term liabilities due to affiliates - - Deferred taxes - - - Other liabilities - Total Liabilities Not Subject to Compromise Liabilities Subject to Compromise - Series C convertible preferred stock - - - Stockholders' equity (deficit) Total Liabilities and Equity $ $ $ $ $ As of December 31, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash and cash equivalents $ - $ $ $ - $ Accounts receivable - - Current receivables due from affiliates - Prepaid expenses and other current assets - - Current Assets Property and equipment, net - - Restricted cash, long term portion - - - Long-term receivables due from affiliates - - Investments in subsidiaries - - Other assets - - Total Assets $ $ $ $ $ Accounts payable $ - $ $ $ - $ Current maturities of debt - - - Deferred revenue - - - Current liabilities due to affiliates - Asset retirement obligations, current portion - - Accrued expenses and other - Current Liabilities Long-term liabilities due to affiliates - - Deferred taxes - - - Other liabilities Total Liabilities Not Subject to Compromise Liabilities Subject to Compromise - Series C convertible preferred stock - - - Stockholders' equity (deficit) Total Liabilities and Equity $ $ $ $ $ For the Three Months Ended June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - Impairment of oil and gas properties - - Insurance proceeds - - - G&A expense (income) - Loss from operations - Other Income (Expense): Interest expense - Letter of credit fees - - - Financing and transaction costs - - Reorganization items - - - Unrealized foreign currency gains - - Other income (expense) Income (loss) before income taxes - PRT expense - - - Total tax benefit - - - Net income (loss) - Preferred stock dividends - - - - - Net income (loss) to common shareholders $ $ $ $ - $ For the Three Months Ended June 30, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - G&A expense - Income (loss) from operations - Other Income (Expense): Unrealized gains on derivatives - - Interest expense Letter of credit fees - - - Financing and transaction costs Unrealized foreign currency gains (losses) - - Other income Loss before income taxes - PRT expense - - - Corporate tax benefit - - - Total tax benefit - - - Net loss - Preferred stock dividends - - - Net loss to common shareholders $ $ $ $ - $ For the Six Months Ended June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - Impairment of oil and gas properties - - Insurance proceeds - - - G&A expense (income) - Loss from operations - Other Income (Expense): Interest expense - Letter of credit fees - - - Financing and transaction costs - - Reorganization items - - - Unrealized foreign currency gains - - - Other income Income (loss) before income taxes - PRT benefit - - - Total tax benefit - - - Net income (loss) - Preferred stock dividends - - - - - Net income (loss) to common shareholders $ $ $ $ - $ For the Six Months Ended June 30, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - G&A expense - Income (loss) from operations - Other Income (Expense): Unrealized gains on derivatives - - Interest expense Letter of credit fees - - - Financing and transaction costs - Loss on early extinguishment of financing agreements - - - Litigation settlement expense - - - Unrealized foreign currency gains (losses) - - - - - Other income (expense) Loss before income taxes - PRT expense - - - Corporate tax benefit - - - Total tax expense - - - Net loss - Preferred stock dividends - - - Net loss to common shareholders $ $ $ $ - $ For the Six Months Ended June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash Flows from Operating Activities: Net loss $ $ $ $ - $ Adjustments to reconcile net loss to net cash provided by (used in) operations: Depreciation, depletion and amortization - - Impairment of oil and gas properties - - Deferred tax benefit - - - Amortization of non-cash compensation - - Amortization of loan costs and discount - - - Other - - Changes in operating assets and liabilities: (Increase) decrease in receivables - - (Increase) decrease in other current assets - - Increase (decrease) in liabilities - Net Cash Provided by (Used in) Operating Activities Cash Flows From Investing Activities: Capital expenditures - Proceeds from insurance settlement - - - - - Increase in restricted cash - - - Net Cash Used in Investing Activities - Cash Flows From Financing Activities: Intercompany cash management - Other financing - - - - - Net Cash Provided by (Used in) Financing Activities - Net Change in Cash and Cash Equivalents - - Cash and Cash Equivalents, Beginning of Period - - Cash and Cash Equivalents, End of Period $ - $ $ $ - $ For the Six Months Ended June 30, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash Flows from Operating Activities: Net loss $ $ $ $ - $ Adjustments to reconcile net loss to net cash provided by (used in) operations: Depreciation, depletion and amortization - - Deferred tax expense (benefit) - - - Unrealized (gains) losses on derivatives - - Amortization of non-cash compensation - - Amortization of loan costs and discount - - Non-cash interest expense - - - Loss on early extinguishment of debt - - - Litigation settlement expense - - - Other - - Changes in operating assets and liabilities: (Increase) decrease in receivables - - (Increase) decrease in other current assets - Increase (decrease) in liabilities - Net Cash Provided by (Used in) Operating Activities Cash Flows From Investing Activities: Capital expenditures - Proceeds from sales, net of cash - - - Proceeds from insurance settlement - - - Increase in restricted cash - - - Net Cash Used in Investing Activities - Cash Flows From Financing Activities: Repayments of borrowings - - - Borrowings under debt agreements, net of debt discount - - Proceeds from issuance of common stock - - - Repayments of MPP - - - Intercompany cash management - Financing costs paid - - Other financing - Net Cash Provided by (Used in) Financing Activities Net Change in Cash and Cash Equivalents - - Cash and Cash Equivalents, Beginning of Period - - Cash and Cash Equivalents, End of Period $ - $ $ $ - $
Debtors [Member]
Debtors Condensed Combined Financial Statements	Not e 4 – Debtors Condensed Combined Financial Statements Condensed combined financial statements of the Debtors are set forth below. The Condensed Combined Financial Statements exclude the financial statements of the non-Debtors. Transactions and balances of receivables and payables between Debtors are eliminated in consolidation. However, the Condensed Combined Balance Sheet includes receivables from related non-Debtors and payables to related non-Debtors. Actual settlement of these related party receivables and payables is, by historical practice, made on a net basis or through an equity contribution. Condensed Combined Balance Sheet As of June 30, 2015 Assets: Current Assets $ Property and Equipment, Net (None not subject to amortization) Long-Term Receivables Due from Affiliates (1) Investments in Subsidiaries Other Assets Total Assets $ Liabilities Not Subject to Compromise: Accrued expenses and other $ Current Liabilities Due to Affiliates Other Liabilities Subject to Compromise (2) Series C Convertible Preferred Stock - Liquidation Preference: $14,800 Stockholders' Equity (3) Total Liabilities and Stockholders’ Equity $ (1) It is expected that upon consummation of the APA and Settlement Agreement, the Intercompany Note, which is approximately $500 million as of June 30, 2015, will be sold to Newco. (2) See Note 5 – Liabilities Subject to Compromise. (3) It is expected that upon consummation of the APA and Settlement Agreement, all common stock of the Debtors will be cancelled. Condensed Combined Statement of Operations Six Months Ended June 30, 2015 Revenues $ Cost of Operations Loss from Operations $ Other Income (Expense): Interest income $ Financing and transaction costs Reorganization items (4) Other expense Total Other Income $ Net Loss $ (4) See Note 5 – Liabilities Subject to Compromise for additional discussion of Reorganization items. Condensed Combined Cash Flow Six Months Ended June 30, 2015 Net cash provided by (used in): Operating $ Investing Financing Net decrease in cash and cash equivalents $ Cash and Cash Equivalents, Beginning of Period $ Cash and Cash Equivalents, End of Period $

Liabilities Subject To Compromi

Liabilities Subject To Compromise	6 Months Ended
	Jun. 30, 2015
Liabilities Subject To Compromise [Abstract]
Liabilities Subject To Compromise	Note 5 – Liabilities Subject to Compromise Liabilities Subject to Compromise represents liabilities incurred prior to the Petition Date which may be affected by the Chapter 11 process. These amounts represent the Debtors’ allowed claims and their best estimate of claims expected to be allowed which will be resolved as part of the bankruptcy proceedings. Liabilities Subject to Compromise consists of the following as of June 30, 2015 : Accounts Payable $ Debt Accrued Interest and Dividends Total Liabilities Subject to Compromise $ Interest Expense The Debtors have discontinued recording interest expense on unsecured or under-secured liabilities subject to compromise on the Petition Date. Contractual interest not accrued during the six months ended June 30, 2015 was approximately $42.6 million. Reorganization Items Reorganization items represent the direct and incremental costs of being in bankruptcy, such as professional fees, pre-petition liability claim adjustments and losses related to terminated contracts that are probable and can be estimated. Reorganization fees for the six months ended June 30, 2015 related solely to professional fees.

Property And Equipment

Property And Equipment	6 Months Ended
	Jun. 30, 2015
Property And Equipment [Abstract]
Property And Equipment	Note 6 – Property and Equipment Property and equipment included the following at the dates indicated below: June 30, December 31, 2015 2014 Oil and Gas Properties Under the Full Cost Method: Subject to Amortization $ $ Not Subject to Amortization: Incurred in 2015 - - Incurred in 2014 - Incurred in 2013 - Incurred prior to 2013 - Computers, Furniture and Fixtures Total Property and Equipment Accumulated Depreciation, Depletion and Amortization Net Property and Equipment $ $ As of December 31, 2014, our properties not subject to amortization balance of $10.8 million related to unevaluated well costs in the Marcellus. These costs were transferred to the amortization base during the second quarter of 2015 when a determination of proved reserves could be assigned to such properties. As of December 31, 2014 and June 30, 2015 we had no unevaluated costs in the U.K. For the three months ended June 30, 2015 and 2014 , we capitalized none and $2.4 million, respectively, in interest related to exploration and development, primarily related to our U.K. activities. For the six months ended June 30, 2015 and 2014 , we capitalized none and $5.0 million, respectively, in interest. For the three months ended June 30, 2015 and 2014 , we capitalized $1.3 million and $2.9 million, respectively, in certain directly related employee costs. For the six months ended June 30, 2015 and 2014 , we capitalized $3.7 million and $6.0 million, respectively, in certain directly related employee costs. Oil and Gas Impairments During the second quarter of 2015 , we recorded $42.9 million in impairment of oil and gas properties, pre-tax, through the application of the full cost ceiling test. The primary reason for the impairment was the precipitous fall in oil and gas prices which began during the fourth quarter of 2014 and have yet to recover. The pricing used for the U.K. for the second quarter of 2015 was $75.98 per barrel for oil and $7.44 per mcf for gas. The pricing used for the U.S. for the second quarter of 2015 was $71.68 per barrel for oil and $3.39 per mcf for gas. Should oil and gas prices remain depressed for the remainder of 2015, further impairments of our oil and gas properties are likely to be recorded throughout 2015. We did not have an impairment of U.S. oil and gas properties through the application of the full cost ceiling test for the second quarter of 2014 , which utilized prices of $100.27 per barrel for oil and $4.09 per m cf for gas. Additionally, w e did not have an impairment of U.K. oil and gas properties through the application of the full cost ceiling test for the second quarter of 2014 , which utilized prices of $108.64 per barrel for oil and $9.65 per m cf for gas. Insurance Settlements During the second quarter of 2015, we settled our insurance claim to recover certain loss of production income and property settlement claims related to the Alba water injection pipeline for a total of $29.2 million, including $13.0 million during the fourth quarter of 2014, $8.4 million during the first quarter of 2015 and $7.8 million during the second quarter of 2015. Insurance proceeds have been recorded as a reduction in capital expenditures or an offsetting amount to operating expenses, depending on the nature of the cost recovery.

Deferred Revenue

Deferred Revenue	6 Months Ended
	Jun. 30, 2015
Deferred Revenue [Abstract]
Deferred Revenue	Note 7 – Deferred Revenue For certain of our U.K. fields, we sell production on a monthly basis; however, the production remains in the field’s storage tanks. The inventory associated with these sales remains on our balance sheet and the revenue is deferred until the production is shipped out of our storage tanks. At June 30, 2015 , our deferred revenue was entirely attributable to our Alba field. Delivery of the production is expected to occur during the fourth quarter of 2015.

Debt Obligations

Debt Obligations	6 Months Ended
	Jun. 30, 2015
Debt Obligations [Abstract]
Debt Obligations	Note 8 – Debt Obligations A t June 30, 2015 , w e had $1,230.2 mil lion in outstanding debt. Our debt consisted of the following at June 30, 2015 and December 31, 2014 : June 30, December 31, 2015 2014 Liabilities Subject to Compromise: (1)(2) Senior Notes, 12% Fixed Rate, Due 2018 $ $ Convertible Senior Notes, 5.5% Fixed Rate, Due 2016 Convertible Bonds, 11.5% Until March 31, 2014 and 7.5% Thereafter, due 2016 Convertible Senior Notes, 6.5% Fixed Rate, Due 2017 Total Liabilities Subject to Compromise Liabilities Not Subject to Compromise: Amended Term Loan Facility, Variable Rate, Due 2017 Total Debt Obligations Less: Debt Discount Less: Liabilities Subject to Compromise Less: Current Maturities Long-Term Debt $ - $ - (1) For discussion of the expected impact of our filing under Ch apter 11 of the Bankruptcy Code on our debt obligations, including entry by the Debtors into the APA and Settlement Agreements, see Note 3 – Voluntary Re organization Under Chapter 11. (2) As a result of our filing under Chapter 11 of the Bankruptcy Code, we are in default of the debt covenants related to the Senior Notes, 5.5% Convertible Senior Notes, 7.5% Convertible Bonds and 6.5% Convertible Senior Notes. All outstanding balances related to these obligations have been reclassified as Liabilities Subject to Compromise in our Condensed Consolidated Balance Sheets. Liabilities Not Subject to Compromise Amended Term Loan Facility On September 30, 2014, two wholly-owned subsidiaries, EIHBV and End Finco LLC (“Finco” and collectively, “Borrowers”) entered into an amended and restated credit agreement (the “Amended Credit Agreement”) replacing our previous $125 million senior secured first lien term loan facility originally entered into on January 24, 2014 (the “Term Loan Facility”). EIHBV and Finco are non-Debtors, and as such, the Amended Credit Agreement is not subject to the Bankruptcy Cases. Pursuant to the Amended Credit Agreement, the lenders advanced approximately $440 million in aggregate principal amount of term loans to the Borrowers (“Amended Term Loan Facility”). The Amended Term Loan Facility bears interest quarterly at a rate of LIBOR plus 10.00% per year (with a LIBOR floor of 1% per year) and matures on January 2, 2017 . The loans under the Amended Term Loan Facility were issued with original issue discount of 2.0% . Borrowings under the Amended Term Loan Facility are guaranteed by the Company and certain of its current and future subsidiaries, including Endeavour Operating Corporation and Endeavour Energy UK Limited (“Endeavour UK”) , subject to certain exceptions. The Amended Term Loan Facility is secured by the same assets that previously secured the Company’s Term Loan Facility other than cash and cash equivalents in the United States. The Amended Credit Agreement contains covenants and provisions with respect to events of default , including restrictions on the Company’s and its subsidiaries’ abilit ies to: (i) pay distributions or repurchase or redeem the Company’s capital stock or subordinated debt; (ii) make certain investments; (iii) incur additional indebtedness; (iv) create or incur certain liens; (v) sell assets; (vi) consolidate, merge or transfer all or substantially all of the Company’s assets; (vii) enter into agreements that restrict distributions from the Company’s subsidiaries to the Company; (viii) engage in transactions with affiliates; and (ix) allow EIH BV or any of its subsidiaries to make dividends, payments or other distributions of any kind to the Debtors, other than pursuant to specific limited amounts and for specified purposes. The Amended Credit Agreement contains customary events of default, subject to certain exceptions. In particular, the following events do not constitute events of default under the Amended Credit Agreement: (a) payment defaults or other defaults to the Company’s existing notes or to certain intercompany indebtedness or (b) a bankruptcy filing by the Company or its domestic subsidiaries and one foreign subsidiary. In addition, the Amended Credit Agreement contain s various financial covenants as defin ed in the agreement, including: · a maximum l everage ratio of 2.75 :1.00 beginning with the fiscal quarter ending December 31, 2014 ; and · a minimum asset coverage ratio of 1.0 to 1.0 as of June 30 and December 31 of each year. I f oil and gas prices remain at their depressed lev els, we could breach our levera ge covenant under our Amended Term Loan Facility in or about the fourth quarter of 2015, which would result in a default under the terms of the Amended Term Loan Facility. Based on this determination, we have classified the outstanding balance of the Amended Term Loan Facility as a current liability in the line item “Current maturities of debt” and the related remaining deferred financing costs as a current asset in our Condensed Consolidated Balance Sheets as of June 30, 2015 and December 31, 2014. Refer to Note 3 – Voluntary Reorganization Under Chapter 11 – Subsequent Event regarding the EEUK Amendment Documents . Liabilities Subject to Compromise Senior Notes In February 2012, we closed the private placement of $350 million aggregate principal amount of 12% First Priority Notes due 2018 and $150 million aggregate principal amount of 12% Second Priority Notes due 2018 (collectively, the “2018 Notes”). I n October 2012, we completed a private placement of an additional $54 million aggregate principal amount of 12% First Priority Notes due 2018 . 5.5% Convertible Senior Notes In July 2011, we issued $135 million aggregate principal amount of our 5.5% Convertible Senior Notes due July 15, 2016 . Interest on these notes is payable semi-annually at a rate of 5.5% per annum. The 5.5% Convertible Senior Notes are convertible into shares of our common stock at an initial conversion rate of 54.019 shares (equivalent to $18.51 per share) of common stock per $1,000 principal amount of the notes, subject to certain anti-dilution adjustments. 7.5% Convertible Bonds In July 2008, we issued 7.5% Convertible Bonds which bore interest at a rate of 11.5% per annum until March 31, 2014 , and at a rate of 7.5% thereafter. Interest is compounded quarterly and added to the outstanding principal balance each quarter. The bonds are convertible into shares of our common stock at an initial conversion price of $16.52 per $1,000 of principal, which represents a conversion rate of approximately 61 shares of our common stock per $1,000 of principal. 6.5% Convertible Senior Notes On February 28, 2014 , we entered into a securities purchase agreement (the “Securities Purchase Agreement”). We issued $30 million of securities during the first quarter of 2014, comprised of 2.9 million shares of our common stock; warrants to purchase 0.7 million shares of our common stock at an exercise price of $5.292 per share, expiring on February 28, 2019 ; and $17.5 million in aggregate principal amount of our 6.5% C onvertible Senior N ote s. Interest on the 6.5% Convertible Senior Notes is payable quarterly and matures the earlier of (i) December 1, 2017 or (ii) 92 days prior to the maturity date of our outstanding 5.5% Convertible Senior Notes or our 7.5% Convertible Bonds, if still outstanding on that date. The 6.5% Convertible Senior Notes are convertibl e at any time at an initial rate of 214.5002 shares of our common stock per $1,000 principal amount of 6.5% Convertible Notes (equivalent to an initial conversion price of approximately $4.662 per share of our common stock). Fair Value The fair value of our outstanding debt obligations was $447.4 million and $446.1 million at June 30, 2015 and December 31, 2014 , respectively. The fair value of our Amended Term Loan Facility was determined based upon a discounted cash flow model. As a result, all fair value measures related to our debt are considered Level 3.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2015
Income Taxes [Abstract]
Income Taxes	Note 9 – Income Taxes Our U.S. operations are taxed at a statutory rate of 35% . However, we currently do not record tax benefits due to losses in the U.S. as there is no assurance that we will generate any U.S. taxable earnings, resulting in a full valuation allowance of all deferred tax assets generated. For years prior to January 1, 2015 , our U.K. operations were taxed at a statutory rate of 62% (composed of a Ring Fence Corporation Tax rate of 30% and Supplementary Charge rate of 32% ). In March 2015, the Supplementary Charge rate decreased to 20% , which was retroactive to January 1, 2015, so that for 2015 the statutory rate is 50% . However, we currently do not record tax benefits due to losses in the U.K. relating to Ring Fence Corporation Tax and Supplemental Charge as there is no assurance that we will generate any U.K. taxable earnings. As a result, we have a full valuation allowance on the deferred tax assets generated relating to these taxes. In addition, certain of our U.K. fields are subject to a Petroleum Revenue Tax (“PRT”) rate of 50% . Our current tax expense is related to PRT on the Alba field, our only producing field subject to PRT. In March 2015, tax legislation was enacted that will decrease the PRT rate from 50% to 35% for years beginning on January 1, 2016. UK Finance Act 2015 On March 26, 2015, the Finance Act 2015 received Royal Assent and was enacted by the U.K. government . The Finance Act 2015 implemented several changes affecting our U.K. activities, including: · a decrease in the Supplementary Charge rate from 32% to 20%, which is retroactive to January 1, 2015; · a decrease in the PRT rate from 50% to 35%, beginning on January 1, 2016; and · introduction of an Investment Allowance which is generated by qualifying expenditures incurred from the commencement date of April 1, 2015. Such expenditures are translated into the investment allowance by applying 62.5% to the expenditures and deduct ing from adjusted ring fence profits which are subject to the Supplementary Charge . The Investment Allowance replaced all existing field allowances. As a result of th is enacted legislation, the Company recorded an $11.4 million deferred tax expense related to the decrease in the Supplementary Charge rate change during the first quarter of 2015, offset by an equal reduction in the U.K. valuation allowance which resulted in a zero net charge to the Condensed Consolidated Statements of Operations for the six months ended June 30, 2015. The Company recorded a deferred PRT tax benefit of $7.9 million during the first quarter of 2015 related to the enacted decrease in the PRT rate for the deferred tax liabilities that will reverse subsequent to the January 1, 2016 effective date. Furthermore, the Company recorded deferred tax expenses of $5.6 million during the second quarter of 2015 related to the enactment of the Investment Allowance and recognition of the remaining field allowances. These charges were offset by an equal reduction in the U.K. valuation allowance which resulted in a zero net charge to the Condensed Consolidated Statements of Operations for the six months ended June 30, 2015.

Other Long-Term Liabilities

Other Long-Term Liabilities	6 Months Ended
	Jun. 30, 2015
Other Long-Term Liabilities [Abstract]
Other Long-Term Liabilities	Note 10 – Other Long-Term Liabilities At June 30, 2015 and December 31, 2014 , our other liabilities included the following: June 30, December 31, 2015 2014 Asset Retirement Obligations $ $ Other Total Other Liabilities $ $ Asset Retirement Obligations Our asset retirement obligations relate to our obligation for the plugging and abandonment of oil and gas properties. The asset retirement obligations are recorded at fair value and accretion expense, recognized over the life of the property, increases the liability to its expected settlement value. If the fair value of the estimated asset retirement obligation changes, an adjustment is recorded for both the asset retirement obligation and the asset retirement cost. The following table provides a rollforward of our asset retirement obligations for the six months ended June 30, 2015 and 2014 . Six Months Ended Six Months Ended June 30, June 30, 2015 2014 Carrying amount of asset retirement obligations as of the beginning of the period $ Accretion expense (included in DD&A expense) Impact of foreign currency exchange rate changes Payment of asset retirement obligations Revision of prior estimates (1) - Liabilities incurred and assumed - Carrying amount of asset retirement obligations, as of end of period Less: Current portion of asset retirement obligations Long-term asset retirement obligations $ (1) The revision of prior estimates during the six months ended June 30, 2015 is primarily attributable to lower rig costs, improved efficiencies for the abandonment work to be performed and exchange rate fluctuations.

Equity Transactions

Equity Transactions	6 Months Ended
	Jun. 30, 2015
Equity Transactions [Abstract]
Equity Transactions	Note 11 – Equity Transactions In February 2014, we entered into the Securities Purchase Agreement whereby we issued 2.9 million shares of our common stock and warrants to purchase 0.7 million shares of our common stock for a total of $12.5 million in cash. The w arrants have an exercise price of $5.292 per share and expire on February 28, 2019 and are subject to custo mary anti-dilution provisions. For discussion of the potential impact of our filing under Chapter 11 of the Bankruptcy Code on our equity, see Note 3 – Voluntary Reorganization Under Chapter 11.

Stock-Based Compensation Arrang

Stock-Based Compensation Arrangements	6 Months Ended
	Jun. 30, 2015
Stock-Based Compensation Arrangements [Abstract]
Stock-Based Compensation Arrangements	Note 12 – Stock - Based Compensation Arrangements We grant restricted stock and stock options to employees and directors as incentive compensation. The restricted stock and options generally vest over three years. We have not granted any restricted stock or stock options during 2015 . Non-cash stock-based compensation is recorded in general and administrative (“G&A”) expenses or capitalized G&A for the three and six months ended June 30, 2015 and 2014 as follows: Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 G&A Expenses $ $ $ $ Capitalized G&A Total non-cash stock-based compensation $ $ $ $ At June 30, 2015 , total compensation cost related to awards not yet recognized was approximately $2.9 million and is expected to be recognized over a weighted average period of less than two years. Stock Options The fair value of each option award is estimated on the date of grant using the Black-Scholes option-pricing model. Information relating to outstanding stock options is summarized as follows: Number of Weighted Weighted Shares Average Average Aggregate Underlying Exercise Price Contractual Intrinsic Options per Share Life in Years Value Balance outstanding - January 1, 2015 $ Expired Balance outstanding - June 30, 2015 $ $ - Currently exercisable - June 30, 2015 $ $ - Restricted Stock R estricted stock awards are valued based on the closing price of our common stock on the measurement date , which i s typically the date of grant. The status of the restricted shares outstanding as of June 30, 2015 is presented below: Weighted Average Grant Number of Date Fair Value Shares per Share Balance outstanding - January 1, 2015 $ Vested Forfeited Balance outstanding - June 30, 2015 $ Total grant date fair value of shares vesting during the period $ Performance-Based Share Awards C ertain of our executive officers were granted a target number of performance shares under individual Performance Unit Award Agreements. The performance shares will be earned as the relative total shareholder return ranking is measured among a designated peer group at the end of a three - year performance period. Payouts will be bas ed on a predetermined schedule at the end of the performance period. The shares issued may range from 0% to 200% of the number of Performance Units specified in the agreements. The fair value of each performance-based award is estimated on the date of grant using a Monte Carlo simulation model. We have not granted any performance-based share awards during 2015 The s tatus of the performance- based share awards as of June 30, 2015 is presented below: Weighted Average Grant Number of Date Fair Value Shares per Share Balance outstanding - January 1, 2015 $ Forfeited Balance outstanding - June 30, 2015 $ For discussion of the expected impact of our filing under Chapter 11 of the Bankruptcy Code on our equity, see Note 3 – Voluntary Reorganization Under Chapter 11.

Loss Per Share

Loss Per Share	6 Months Ended
	Jun. 30, 2015
Loss Per Share [Abstract]
Loss Per Share	Note 1 3 – Loss per Share Basic loss per common share is computed by dividing net loss to common stockholders by the weighted average number of common shares outstanding for the period. Diluted loss per share includes the effect of our outstanding stock options, warrants and shares issuable pursuant to convertible debt, convertible preferred stock and certain stock incentive plans under the treasury stock method, if including such instruments would be dilutive. For each of the periods presented, shares associated with stock options, warrants, convertible debt, convertible preferred stock and certain stock incentive plans were not included because their inclusion would be anti-dilutive. The common shares potential ly issuable arising from these instruments, which were outstanding during the periods presented in the financial statements consisted of: June 30, 2015 2014 Warrants, options and stock-based compensation Convertible debt Convertible preferred stock

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	6 Months Ended
	Jun. 30, 2015
Supplemental Cash Flow Information [Abstract]
Supplemental Cash Flow Information	Note 14 – Supplemental Cash Flow Information Cash paid (refunded) during the period for interest, income taxes and reorganization items was as follows: Six Months Ended June 30, 2015 2014 Interest paid $ $ Income taxes paid (refunded), all related to PRT $ $ Reorganization items paid $ $ -

Commitments And Contingencies

Commitments And Contingencies	6 Months Ended
	Jun. 30, 2015
Commitments And Contingencies [Abstract]
Commitments And Contingencies	Note 1 5 – Commitments and Contingencies Commitments Related to Asset Retirement Obligations We ha ve entered into decommissioning security agreements related to abandonment liabilities for certain of our U.K. oil and gas properties. Under these agreements, we are required to post security from time to time in the form of letters of credit, cash or other agreed-upon consideration. Prior to entry into the LC Issuance Agreement on September 30, 2014 (see below), t he commitments under the se agreements were not recorded as liabilities, and f ees and expenses related to these agreements were included in “Letter of credit fees” in other expenses on our C ondensed C onsolidated Statements of O perations. LC Issuance Agreement On September 30, 2014, in conjunction with the Amended Term Loan Facility, the Company entered into an LC Issuance Agreement (the “LC Issuance Agreement”), pursuant to which Credit Suisse agreed t o issue letters of credit for Endeavour UK’s account in the amount of approximately £63.1 million as of June 30, 2015 , of which £42.5 million , £11.9 million and £8.7 million and relate to decommissioning obligations at Alba, IVRRH and Renee and Rubie, respectively. The letters of credit secure decommissioning obligations in connection with certain of Endeavour ’s U .K. Continental Shelf p etroleum p roduction . The Company collateralized its obligations under the LC Issuance Agreement and all letters of credit issued thereunder by posting cash collateral, which has been funded with the proceeds from the Amended Term Loan Facility. The posted cash collateral balance of $101.1 million related to the LC Issuance Agreement as of June 30, 2015 is reflected as “Restricted cash, long-term portion” in our Condensed Consolidated Balance Sheets. The liability related to the posted cash collateral is included as part of the $440 million Amended Term Loan Facility long-term debt obligation. The LC Issuance Agreement was entered into to replace the Combined Procurement Agreement. Combined Procurement Agreement On January 24, 2014, we entered into a letter of credit procurement agreement (the “ Combined Procurement Agreement ”) with an unaffiliated third party ( “ Payee ” ), where we agreed to reimburse the Payee for any expense incurred by it in connection with the posting of cash collateral to secure letters of credit issued for our account in the amount of approximately £78 million. The letters of credit secure d decommissioning obligations in connection with certain of our U.K. licen s es. The Combined Procurement Agreement was entered into to replace the previous procurement agreements. Under the Combined Procurement Agreement, we paid a quarterly fee computed at a rate of LIBOR plus 7.00% per year (provided that LIBOR shall equal at least 1.25% per year) on the aggregate balance of posted cash collateral. Concurrent with our entry into the LC Issuance Agreement on September 30, 2014, the Combined Procurement Agreement was terminated, and we paid all outstanding interest and fees of $1.9 million and $2.4 million, respectively. Terminated Acquisition of Marcellus Assets SM Energy Company “SM Energy” filed a lawsuit against us in Texas state court on December 20, 2011 alleging that we breached an agreement for the purchase of oil and gas leases, producing properties, geophysical data, a pipeline and related assets in the Marcellus shale play in Pennsylvania by terminating it and refusing to close on the transactions. On April 16, 2014, we reached an agreement with SM Energy to settle and dismiss the litigation. In accordance with the settlement agreement, we: · forfeited our $6 million deposit; · paid SM Energy $5 million; · will pay an additional $4.5 million in three graduated payments, beginning in April 2015; and · issued warrants to purchase 2.1 million shares of our common stock with exercise price of $5.29 per share . As a result of this settlement, w e recorded $19.0 million in total settlement expense during the first quarter of 2014. Legal Proceedings Refer to Note 1 — General for information concerning the Bankruptcy Cases.

Guarantor Subsidiaries

Guarantor Subsidiaries	6 Months Ended
	Jun. 30, 2015
General, Debtors Condensed Combined Financial Statements And Guarantor Subsidiaries [Abstract]
Guarantor Subsidiaries	Note 16 – Guarantor Subsidiaries Certain of our wholly-owned domestic subsidiaries have, jointly and severally, fully and unconditionally guaranteed the 2018 Notes. Pursuant to Securities and Exchange Commission (“SEC”) regulations, we have presented in columnar format the condensed consolidating financial information for EIC , the guarantor subsidiaries on a combined basis, and all non-guarantor subsidiaries on a combined basis. The subsidiary guarantees are unsecured obligations of each subsidiary guarantor and rank equally in right of payment with all senior indebtedness of that subsidiary guarantor and senior in right of payment to all subordinated indebtedness of that subsidiary guarantor. The subsidiary guarantees are effectively subordinated to any secured indebtedness of the subsidiary guarantor with respect to the assets securing the indebtedness. In addition, the subsidiary guarantees may be released in certain customary circumstances, including (i) the sale of all or substantially all of the properties or assets or a guarantor, (ii) the sale of the capital stock of a guarantor, (iii) the designation of a guarantor as an “Unrestricted Subsidiary,” (iv) upon legal defeasance of the 2018 Notes or satisfaction and discharge of the indentures governing the 2018 Notes, (v) upon the liquidation or dissolution of the guarantor or (vi) if the guarantor ceases to guarantee other of our indebtedness and ceases to be a material subsidiary, each of which is subject to important limitations in the indentures governing the 2018 Notes. Condensed consolidating financial statements for our guarantor subsidiaries and non-guarantor subsidiaries are presented in the following tables: As of June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash and cash equivalents $ - $ $ $ - $ Accounts receivable - - Current receivables due from affiliates - Prepaid expenses and other current assets - - Current Assets Property and equipment, net - - Restricted cash, long-term portion - - - Long-term receivables due from affiliates - - Investments in subsidiaries - - Other assets - - Total Assets $ $ $ $ $ Accounts payable $ - $ $ $ - $ Current maturities of debt - - - Deferred revenue - - - Current liabilities due to affiliates - Asset retirement obligations, current portion - - Accrued expenses and other - Current Liabilities Long-term liabilities due to affiliates - - Deferred taxes - - - Other liabilities - Total Liabilities Not Subject to Compromise Liabilities Subject to Compromise - Series C convertible preferred stock - - - Stockholders' equity (deficit) Total Liabilities and Equity $ $ $ $ $ As of December 31, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash and cash equivalents $ - $ $ $ - $ Accounts receivable - - Current receivables due from affiliates - Prepaid expenses and other current assets - - Current Assets Property and equipment, net - - Restricted cash, long term portion - - - Long-term receivables due from affiliates - - Investments in subsidiaries - - Other assets - - Total Assets $ $ $ $ $ Accounts payable $ - $ $ $ - $ Current maturities of debt - - - Deferred revenue - - - Current liabilities due to affiliates - Asset retirement obligations, current portion - - Accrued expenses and other - Current Liabilities Long-term liabilities due to affiliates - - Deferred taxes - - - Other liabilities Total Liabilities Not Subject to Compromise Liabilities Subject to Compromise - Series C convertible preferred stock - - - Stockholders' equity (deficit) Total Liabilities and Equity $ $ $ $ $ For the Three Months Ended June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - Impairment of oil and gas properties - - Insurance proceeds - - - G&A expense (income) - Loss from operations - Other Income (Expense): Interest expense - Letter of credit fees - - - Financing and transaction costs - - Reorganization items - - - Unrealized foreign currency gains - - Other income (expense) Income (loss) before income taxes - PRT expense - - - Total tax benefit - - - Net income (loss) - Preferred stock dividends - - - - - Net income (loss) to common shareholders $ $ $ $ - $ For the Three Months Ended June 30, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - G&A expense - Income (loss) from operations - Other Income (Expense): Unrealized gains on derivatives - - Interest expense Letter of credit fees - - - Financing and transaction costs Unrealized foreign currency gains (losses) - - Other income Loss before income taxes - PRT expense - - - Corporate tax benefit - - - Total tax benefit - - - Net loss - Preferred stock dividends - - - Net loss to common shareholders $ $ $ $ - $ For the Six Months Ended June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - Impairment of oil and gas properties - - Insurance proceeds - - - G&A expense (income) - Loss from operations - Other Income (Expense): Interest expense - Letter of credit fees - - - Financing and transaction costs - - Reorganization items - - - Unrealized foreign currency gains - - - Other income Income (loss) before income taxes - PRT benefit - - - Total tax benefit - - - Net income (loss) - Preferred stock dividends - - - - - Net income (loss) to common shareholders $ $ $ $ - $ For the Six Months Ended June 30, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - G&A expense - Income (loss) from operations - Other Income (Expense): Unrealized gains on derivatives - - Interest expense Letter of credit fees - - - Financing and transaction costs - Loss on early extinguishment of financing agreements - - - Litigation settlement expense - - - Unrealized foreign currency gains (losses) - - - - - Other income (expense) Loss before income taxes - PRT expense - - - Corporate tax benefit - - - Total tax expense - - - Net loss - Preferred stock dividends - - - Net loss to common shareholders $ $ $ $ - $ For the Six Months Ended June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash Flows from Operating Activities: Net loss $ $ $ $ - $ Adjustments to reconcile net loss to net cash provided by (used in) operations: Depreciation, depletion and amortization - - Impairment of oil and gas properties - - Deferred tax benefit - - - Amortization of non-cash compensation - - Amortization of loan costs and discount - - - Other - - Changes in operating assets and liabilities: (Increase) decrease in receivables - - (Increase) decrease in other current assets - - Increase (decrease) in liabilities - Net Cash Provided by (Used in) Operating Activities Cash Flows From Investing Activities: Capital expenditures - Proceeds from insurance settlement - - - - - Increase in restricted cash - - - Net Cash Used in Investing Activities - Cash Flows From Financing Activities: Intercompany cash management - Other financing - - - - - Net Cash Provided by (Used in) Financing Activities - Net Change in Cash and Cash Equivalents - - Cash and Cash Equivalents, Beginning of Period - - Cash and Cash Equivalents, End of Period $ - $ $ $ - $ For the Six Months Ended June 30, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash Flows from Operating Activities: Net loss $ $ $ $ - $ Adjustments to reconcile net loss to net cash provided by (used in) operations: Depreciation, depletion and amortization - - Deferred tax expense (benefit) - - - Unrealized (gains) losses on derivatives - - Amortization of non-cash compensation - - Amortization of loan costs and discount - - Non-cash interest expense - - - Loss on early extinguishment of debt - - - Litigation settlement expense - - - Other - - Changes in operating assets and liabilities: (Increase) decrease in receivables - - (Increase) decrease in other current assets - Increase (decrease) in liabilities - Net Cash Provided by (Used in) Operating Activities Cash Flows From Investing Activities: Capital expenditures - Proceeds from sales, net of cash - - - Proceeds from insurance settlement - - - Increase in restricted cash - - - Net Cash Used in Investing Activities - Cash Flows From Financing Activities: Repayments of borrowings - - - Borrowings under debt agreements, net of debt discount - - Proceeds from issuance of common stock - - - Repayments of MPP - - - Intercompany cash management - Financing costs paid - - Other financing - Net Cash Provided by (Used in) Financing Activities Net Change in Cash and Cash Equivalents - - Cash and Cash Equivalents, Beginning of Period - - Cash and Cash Equivalents, End of Period $ - $ $ $ - $

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2015
Subsequent Events [Abstract]
Subsequent Events	Note 17 – Subsequent Events Refer to Note 3 – Voluntary Reorganization Under Chapter 11 for further information.

Summary Of Significant Accoun23

Summary Of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2015
Summary Of Significant Accounting Policies [Abstract]
Basis of Presentation and Use of Estimates	Basis of Presentation and Use of Estimates The accompanying unaudited condensed consolidated financial statements have been prepared on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and have been presented on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities in the normal course of business. The accompanying financial statements do not include any adjustments to reflect the possible future effects on the recoverability of assets or the amounts of liabilities that may result from the outcome of this uncertainty. See Note 1 – General – Going Concern. In the opinion of management, all normal recurring adjustments considered necessary for a fair presentation have been included in these financial statements. Certain amounts for prior periods have been reclassified to conform to the current presentation. U.S. GAAP requires management to use estimates, judgments and assumptions that affect the amounts of assets, liabilities, revenues and expenses reported herein. While management regularly reviews its estimates, actual results could differ from those estimates. Management believes that it is reasonably possible that the following material estimates affecting the financial statements could change in the current year: · estimates of proved oil and gas reserves; · estimates as to the expected future cash flow from proved oil and gas properties; and · estimates of future dismantlement and restoration costs.
Discontinued Operations	Discontinued Operations On January 1, 2015, the Company adopted the Financial Accounting Standards Board ’s ( “ FASB ” ) updated guidance on reporting discontinued operations and disclosures of disposals of components of an entity. The update amended the requirements for reporting discontinued operations , including the criteria for which discontinued operations are reported and additional disclosures about discontinued operations . The guidance applies prospectively to new disposals and new classifications of disposal groups as held for sale after the effective date.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In March 2015, the FASB issued an update to the accounting standards to simplify the presentation of debt issuance costs. The amendments in this update require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this update. The guidance is effective for interim periods and annual period beginning after December 15, 2015; however early adoption is permitted. We are currently evaluating the effect that adopting this guidance will have on our financial position, results of operations or cash flows. In May 2014, the FASB issued a new standard on revenue recognition. The new revenue recognition standard provides a five-step analysis of transactions to determine when and how revenue is recognized. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In July 2015, the FASB finalized the delay of the effective date by one year, making the new standard effective for interim periods and annual period beginning after December 15, 2017. This ASU can be adopted either retrospectively or as a cumulative-effect adjustment as of the date of adoption; however, entities that are reporting under U.S. GAAP are not permitted to adopt the standard earlier than the original effective date for public entities (that is, no earlier than 2018 for calendar year-end entities). We are currently evaluating the effect that adopting this guidance will have on our financial position, results of operations or cash flows.

Debtors Condensed Combined Fi24

Debtors Condensed Combined Financial Statements (Tables)	6 Months Ended
	Jun. 30, 2015
Schedule Of Debtors Condensed Combined Financial Statements	As of June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash and cash equivalents $ - $ $ $ - $ Accounts receivable - - Current receivables due from affiliates - Prepaid expenses and other current assets - - Current Assets Property and equipment, net - - Restricted cash, long-term portion - - - Long-term receivables due from affiliates - - Investments in subsidiaries - - Other assets - - Total Assets $ $ $ $ $ Accounts payable $ - $ $ $ - $ Current maturities of debt - - - Deferred revenue - - - Current liabilities due to affiliates - Asset retirement obligations, current portion - - Accrued expenses and other - Current Liabilities Long-term liabilities due to affiliates - - Deferred taxes - - - Other liabilities - Total Liabilities Not Subject to Compromise Liabilities Subject to Compromise - Series C convertible preferred stock - - - Stockholders' equity (deficit) Total Liabilities and Equity $ $ $ $ $ As of December 31, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash and cash equivalents $ - $ $ $ - $ Accounts receivable - - Current receivables due from affiliates - Prepaid expenses and other current assets - - Current Assets Property and equipment, net - - Restricted cash, long term portion - - - Long-term receivables due from affiliates - - Investments in subsidiaries - - Other assets - - Total Assets $ $ $ $ $ Accounts payable $ - $ $ $ - $ Current maturities of debt - - - Deferred revenue - - - Current liabilities due to affiliates - Asset retirement obligations, current portion - - Accrued expenses and other - Current Liabilities Long-term liabilities due to affiliates - - Deferred taxes - - - Other liabilities Total Liabilities Not Subject to Compromise Liabilities Subject to Compromise - Series C convertible preferred stock - - - Stockholders' equity (deficit) Total Liabilities and Equity $ $ $ $ $ For the Three Months Ended June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - Impairment of oil and gas properties - - Insurance proceeds - - - G&A expense (income) - Loss from operations - Other Income (Expense): Interest expense - Letter of credit fees - - - Financing and transaction costs - - Reorganization items - - - Unrealized foreign currency gains - - Other income (expense) Income (loss) before income taxes - PRT expense - - - Total tax benefit - - - Net income (loss) - Preferred stock dividends - - - - - Net income (loss) to common shareholders $ $ $ $ - $ For the Three Months Ended June 30, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - G&A expense - Income (loss) from operations - Other Income (Expense): Unrealized gains on derivatives - - Interest expense Letter of credit fees - - - Financing and transaction costs Unrealized foreign currency gains (losses) - - Other income Loss before income taxes - PRT expense - - - Corporate tax benefit - - - Total tax benefit - - - Net loss - Preferred stock dividends - - - Net loss to common shareholders $ $ $ $ - $ For the Six Months Ended June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - Impairment of oil and gas properties - - Insurance proceeds - - - G&A expense (income) - Loss from operations - Other Income (Expense): Interest expense - Letter of credit fees - - - Financing and transaction costs - - Reorganization items - - - Unrealized foreign currency gains - - - Other income Income (loss) before income taxes - PRT benefit - - - Total tax benefit - - - Net income (loss) - Preferred stock dividends - - - - - Net income (loss) to common shareholders $ $ $ $ - $ For the Six Months Ended June 30, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - G&A expense - Income (loss) from operations - Other Income (Expense): Unrealized gains on derivatives - - Interest expense Letter of credit fees - - - Financing and transaction costs - Loss on early extinguishment of financing agreements - - - Litigation settlement expense - - - Unrealized foreign currency gains (losses) - - - - - Other income (expense) Loss before income taxes - PRT expense - - - Corporate tax benefit - - - Total tax expense - - - Net loss - Preferred stock dividends - - - Net loss to common shareholders $ $ $ $ - $ For the Six Months Ended June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash Flows from Operating Activities: Net loss $ $ $ $ - $ Adjustments to reconcile net loss to net cash provided by (used in) operations: Depreciation, depletion and amortization - - Impairment of oil and gas properties - - Deferred tax benefit - - - Amortization of non-cash compensation - - Amortization of loan costs and discount - - - Other - - Changes in operating assets and liabilities: (Increase) decrease in receivables - - (Increase) decrease in other current assets - - Increase (decrease) in liabilities - Net Cash Provided by (Used in) Operating Activities Cash Flows From Investing Activities: Capital expenditures - Proceeds from insurance settlement - - - - - Increase in restricted cash - - - Net Cash Used in Investing Activities - Cash Flows From Financing Activities: Intercompany cash management - Other financing - - - - - Net Cash Provided by (Used in) Financing Activities - Net Change in Cash and Cash Equivalents - - Cash and Cash Equivalents, Beginning of Period - - Cash and Cash Equivalents, End of Period $ - $ $ $ - $ For the Six Months Ended June 30, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash Flows from Operating Activities: Net loss $ $ $ $ - $ Adjustments to reconcile net loss to net cash provided by (used in) operations: Depreciation, depletion and amortization - - Deferred tax expense (benefit) - - - Unrealized (gains) losses on derivatives - - Amortization of non-cash compensation - - Amortization of loan costs and discount - - Non-cash interest expense - - - Loss on early extinguishment of debt - - - Litigation settlement expense - - - Other - - Changes in operating assets and liabilities: (Increase) decrease in receivables - - (Increase) decrease in other current assets - Increase (decrease) in liabilities - Net Cash Provided by (Used in) Operating Activities Cash Flows From Investing Activities: Capital expenditures - Proceeds from sales, net of cash - - - Proceeds from insurance settlement - - - Increase in restricted cash - - - Net Cash Used in Investing Activities - Cash Flows From Financing Activities: Repayments of borrowings - - - Borrowings under debt agreements, net of debt discount - - Proceeds from issuance of common stock - - - Repayments of MPP - - - Intercompany cash management - Financing costs paid - - Other financing - Net Cash Provided by (Used in) Financing Activities Net Change in Cash and Cash Equivalents - - Cash and Cash Equivalents, Beginning of Period - - Cash and Cash Equivalents, End of Period $ - $ $ $ - $
Debtors [Member]
Schedule Of Debtors Condensed Combined Financial Statements	Condensed Combined Balance Sheet As of June 30, 2015 Assets: Current Assets $ Property and Equipment, Net (None not subject to amortization) Long-Term Receivables Due from Affiliates (1) Investments in Subsidiaries Other Assets Total Assets $ Liabilities Not Subject to Compromise: Accrued expenses and other $ Current Liabilities Due to Affiliates Other Liabilities Subject to Compromise (2) Series C Convertible Preferred Stock - Liquidation Preference: $14,800 Stockholders' Equity (3) Total Liabilities and Stockholders’ Equity $ (1) It is expected that upon consummation of the APA and Settlement Agreement, the Intercompany Note, which is approximately $500 million as of June 30, 2015, will be sold to Newco. (2) See Note 5 – Liabilities Subject to Compromise. (3) It is expected that upon consummation of the APA and Settlement Agreement, all common stock of the Debtors will be cancelled. Condensed Combined Statement of Operations Six Months Ended June 30, 2015 Revenues $ Cost of Operations Loss from Operations $ Other Income (Expense): Interest income $ Financing and transaction costs Reorganization items (4) Other expense Total Other Income $ Net Loss $ (4) See Note 5 – Liabilities Subject to Compromise for additional discussion of Reorganization items. Condensed Combined Cash Flow Six Months Ended June 30, 2015 Net cash provided by (used in): Operating $ Investing Financing Net decrease in cash and cash equivalents $ Cash and Cash Equivalents, Beginning of Period $ Cash and Cash Equivalents, End of Period $

Liabilities Subject To Compro25

Liabilities Subject To Compromise (Tables)	6 Months Ended
	Jun. 30, 2015
Liabilities Subject To Compromise [Abstract]
Schedule Of Liabilities Subject To Compromise	Accounts Payable $ Debt Accrued Interest and Dividends Total Liabilities Subject to Compromise $

Property And Equipment (Tables)

Property And Equipment (Tables)	6 Months Ended
	Jun. 30, 2015
Property And Equipment [Abstract]
Schedule Of Property And Equipment	June 30, December 31, 2015 2014 Oil and Gas Properties Under the Full Cost Method: Subject to Amortization $ $ Not Subject to Amortization: Incurred in 2015 - - Incurred in 2014 - Incurred in 2013 - Incurred prior to 2013 - Computers, Furniture and Fixtures Total Property and Equipment Accumulated Depreciation, Depletion and Amortization Net Property and Equipment $ $

Debt Obligations (Tables)

Debt Obligations (Tables)	6 Months Ended
	Jun. 30, 2015
Debt Obligations [Abstract]
Schedule Of Debt	June 30, December 31, 2015 2014 Liabilities Subject to Compromise: (1)(2) Senior Notes, 12% Fixed Rate, Due 2018 $ $ Convertible Senior Notes, 5.5% Fixed Rate, Due 2016 Convertible Bonds, 11.5% Until March 31, 2014 and 7.5% Thereafter, due 2016 Convertible Senior Notes, 6.5% Fixed Rate, Due 2017 Total Liabilities Subject to Compromise Liabilities Not Subject to Compromise: Amended Term Loan Facility, Variable Rate, Due 2017 Total Debt Obligations Less: Debt Discount Less: Liabilities Subject to Compromise Less: Current Maturities Long-Term Debt $ - $ - (1) For discussion of the expected impact of our filing under Ch apter 11 of the Bankruptcy Code on our debt obligations, including entry by the Debtors into the APA and Settlement Agreements, see Note 3 – Voluntary Re organization Under Chapter 11. (2) As a result of our filing under Chapter 11 of the Bankruptcy Code, we are in default of the debt covenants related to the Senior Notes, 5.5% Convertible Senior Notes, 7.5% Convertible Bonds and 6.5% Convertible Senior Notes. All outstanding balances related to these obligations have been reclassified as Liabilities Subject to Compromise in our Condensed Consolidated Balance Sheets.

Other Long-Term Liabilities (Ta

Other Long-Term Liabilities (Tables)	6 Months Ended
	Jun. 30, 2015
Other Long-Term Liabilities [Abstract]
Schedule Of Other Liabilities	June 30, December 31, 2015 2014 Asset Retirement Obligations $ $ Other Total Other Liabilities $ $
Schedule Of Asset Retirement Obligations	Six Months Ended Six Months Ended June 30, June 30, 2015 2014 Carrying amount of asset retirement obligations as of the beginning of the period $ Accretion expense (included in DD&A expense) Impact of foreign currency exchange rate changes Payment of asset retirement obligations Revision of prior estimates (1) - Liabilities incurred and assumed - Carrying amount of asset retirement obligations, as of end of period Less: Current portion of asset retirement obligations Long-term asset retirement obligations $ The revision of prior estimates during the six months ended June 30, 2015 is primarily attributable to lower rig costs, improved efficiencies for the abandonment work to be performed and exchange rate fluctuations.

Stock-Based Compensation Arra29

Stock-Based Compensation Arrangements (Tables)	6 Months Ended
	Jun. 30, 2015
Stock-Based Compensation Arrangements [Abstract]
Schedule Of General And Administrative Expenses	Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 G&A Expenses $ $ $ $ Capitalized G&A Total non-cash stock-based compensation $ $ $ $
Schedule Of Outstanding Stock Options	Number of Weighted Weighted Shares Average Average Aggregate Underlying Exercise Price Contractual Intrinsic Options per Share Life in Years Value Balance outstanding - January 1, 2015 $ Expired Balance outstanding - June 30, 2015 $ $ - Currently exercisable - June 30, 2015 $ $ -
Schedule Of Restricted Shares Granted	Weighted Average Grant Number of Date Fair Value Shares per Share Balance outstanding - January 1, 2015 $ Vested Forfeited Balance outstanding - June 30, 2015 $ Total grant date fair value of shares vesting during the period $
Schedule Of Performance-Based Share Awards	Weighted Average Grant Number of Date Fair Value Shares per Share Balance outstanding - January 1, 2015 $ Forfeited Balance outstanding - June 30, 2015 $

Loss Per Share (Tables)

Loss Per Share (Tables)	6 Months Ended
	Jun. 30, 2015
Loss Per Share [Abstract]
Schedule Of Common Shares Potentially Issuable	June 30, 2015 2014 Warrants, options and stock-based compensation Convertible debt Convertible preferred stock

Supplemental Cash Flow Inform31

Supplemental Cash Flow Information (Tables)	6 Months Ended
	Jun. 30, 2015
Supplemental Cash Flow Information [Abstract]
Schedule Of Supplemental Cash Flow Information	Six Months Ended June 30, 2015 2014 Interest paid $ $ Income taxes paid (refunded), all related to PRT $ $ Reorganization items paid $ $ -

Guarantor Subsidiaries (Tables)

Guarantor Subsidiaries (Tables)	6 Months Ended
	Jun. 30, 2015
General, Debtors Condensed Combined Financial Statements And Guarantor Subsidiaries [Abstract]
Schedule Of Condensed Financial Statements	As of June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash and cash equivalents $ - $ $ $ - $ Accounts receivable - - Current receivables due from affiliates - Prepaid expenses and other current assets - - Current Assets Property and equipment, net - - Restricted cash, long-term portion - - - Long-term receivables due from affiliates - - Investments in subsidiaries - - Other assets - - Total Assets $ $ $ $ $ Accounts payable $ - $ $ $ - $ Current maturities of debt - - - Deferred revenue - - - Current liabilities due to affiliates - Asset retirement obligations, current portion - - Accrued expenses and other - Current Liabilities Long-term liabilities due to affiliates - - Deferred taxes - - - Other liabilities - Total Liabilities Not Subject to Compromise Liabilities Subject to Compromise - Series C convertible preferred stock - - - Stockholders' equity (deficit) Total Liabilities and Equity $ $ $ $ $ As of December 31, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash and cash equivalents $ - $ $ $ - $ Accounts receivable - - Current receivables due from affiliates - Prepaid expenses and other current assets - - Current Assets Property and equipment, net - - Restricted cash, long term portion - - - Long-term receivables due from affiliates - - Investments in subsidiaries - - Other assets - - Total Assets $ $ $ $ $ Accounts payable $ - $ $ $ - $ Current maturities of debt - - - Deferred revenue - - - Current liabilities due to affiliates - Asset retirement obligations, current portion - - Accrued expenses and other - Current Liabilities Long-term liabilities due to affiliates - - Deferred taxes - - - Other liabilities Total Liabilities Not Subject to Compromise Liabilities Subject to Compromise - Series C convertible preferred stock - - - Stockholders' equity (deficit) Total Liabilities and Equity $ $ $ $ $ For the Three Months Ended June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - Impairment of oil and gas properties - - Insurance proceeds - - - G&A expense (income) - Loss from operations - Other Income (Expense): Interest expense - Letter of credit fees - - - Financing and transaction costs - - Reorganization items - - - Unrealized foreign currency gains - - Other income (expense) Income (loss) before income taxes - PRT expense - - - Total tax benefit - - - Net income (loss) - Preferred stock dividends - - - - - Net income (loss) to common shareholders $ $ $ $ - $ For the Three Months Ended June 30, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - G&A expense - Income (loss) from operations - Other Income (Expense): Unrealized gains on derivatives - - Interest expense Letter of credit fees - - - Financing and transaction costs Unrealized foreign currency gains (losses) - - Other income Loss before income taxes - PRT expense - - - Corporate tax benefit - - - Total tax benefit - - - Net loss - Preferred stock dividends - - - Net loss to common shareholders $ $ $ $ - $ For the Six Months Ended June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - Impairment of oil and gas properties - - Insurance proceeds - - - G&A expense (income) - Loss from operations - Other Income (Expense): Interest expense - Letter of credit fees - - - Financing and transaction costs - - Reorganization items - - - Unrealized foreign currency gains - - - Other income Income (loss) before income taxes - PRT benefit - - - Total tax benefit - - - Net income (loss) - Preferred stock dividends - - - - - Net income (loss) to common shareholders $ $ $ $ - $ For the Six Months Ended June 30, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Revenue $ - $ $ $ - $ Operating expenses - - DD&A expense - - G&A expense - Income (loss) from operations - Other Income (Expense): Unrealized gains on derivatives - - Interest expense Letter of credit fees - - - Financing and transaction costs - Loss on early extinguishment of financing agreements - - - Litigation settlement expense - - - Unrealized foreign currency gains (losses) - - - - - Other income (expense) Loss before income taxes - PRT expense - - - Corporate tax benefit - - - Total tax expense - - - Net loss - Preferred stock dividends - - - Net loss to common shareholders $ $ $ $ - $ For the Six Months Ended June 30, 2015 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash Flows from Operating Activities: Net loss $ $ $ $ - $ Adjustments to reconcile net loss to net cash provided by (used in) operations: Depreciation, depletion and amortization - - Impairment of oil and gas properties - - Deferred tax benefit - - - Amortization of non-cash compensation - - Amortization of loan costs and discount - - - Other - - Changes in operating assets and liabilities: (Increase) decrease in receivables - - (Increase) decrease in other current assets - - Increase (decrease) in liabilities - Net Cash Provided by (Used in) Operating Activities Cash Flows From Investing Activities: Capital expenditures - Proceeds from insurance settlement - - - - - Increase in restricted cash - - - Net Cash Used in Investing Activities - Cash Flows From Financing Activities: Intercompany cash management - Other financing - - - - - Net Cash Provided by (Used in) Financing Activities - Net Change in Cash and Cash Equivalents - - Cash and Cash Equivalents, Beginning of Period - - Cash and Cash Equivalents, End of Period $ - $ $ $ - $ For the Six Months Ended June 30, 2014 Endeavour International Corporation Combined Guarantor Subsidiaries Combined Non-Guarantor Subsidiaries Eliminations Consolidated Cash Flows from Operating Activities: Net loss $ $ $ $ - $ Adjustments to reconcile net loss to net cash provided by (used in) operations: Depreciation, depletion and amortization - - Deferred tax expense (benefit) - - - Unrealized (gains) losses on derivatives - - Amortization of non-cash compensation - - Amortization of loan costs and discount - - Non-cash interest expense - - - Loss on early extinguishment of debt - - - Litigation settlement expense - - - Other - - Changes in operating assets and liabilities: (Increase) decrease in receivables - - (Increase) decrease in other current assets - Increase (decrease) in liabilities - Net Cash Provided by (Used in) Operating Activities Cash Flows From Investing Activities: Capital expenditures - Proceeds from sales, net of cash - - - Proceeds from insurance settlement - - - Increase in restricted cash - - - Net Cash Used in Investing Activities - Cash Flows From Financing Activities: Repayments of borrowings - - - Borrowings under debt agreements, net of debt discount - - Proceeds from issuance of common stock - - - Repayments of MPP - - - Intercompany cash management - Financing costs paid - - Other financing - Net Cash Provided by (Used in) Financing Activities Net Change in Cash and Cash Equivalents - - Cash and Cash Equivalents, Beginning of Period - - Cash and Cash Equivalents, End of Period $ - $ $ $ - $

Voluntary Reorganization Unde33

Voluntary Reorganization Under Chapter 11 (Narrative) (Details) - USD ($)	Aug. 03, 2015	Dec. 16, 2014	Sep. 02, 2014	Jun. 30, 2015	Dec. 31, 2014	Oct. 10, 2014	Oct. 31, 2012	Feb. 29, 2012	Jul. 31, 2011	Jul. 31, 2008
Debt Instrument [Line Items]
Interest due			$ 33,500,000
Litigation amount		$ 6,200,000
First Priority Notes [Member]
Debt Instrument [Line Items]
Interest rate			12.00%				12.00%	12.00%
Second Priority Notes [Member]
Debt Instrument [Line Items]
Interest rate			12.00%					12.00%
6.5% Convertible Notes [Member]
Debt Instrument [Line Items]
Interest rate			6.50%
7.5% Fixed Rate [Member]
Debt Instrument [Line Items]
Interest rate				7.50%	7.50%	7.50%				7.50%
Convertible Senior Notes, 5.5% Fixed Rate, Due 2016 [Member]
Debt Instrument [Line Items]
Interest rate				5.50%	5.50%	5.50%			5.50%
Subsequent Event [Member]
Debt Instrument [Line Items]
Percentage of net cash proceeds from sale of oil and gas assets	53.00%
Subsequent Event [Member] | EIHBV [Member]
Debt Instrument [Line Items]
Purchase price	$ 1
Percentage of stock held	65.00%
Subsequent Event [Member] | Intercompany Note [Member]
Debt Instrument [Line Items]
Note purchase price	$ 1

Debtors Condensed Combined Fi34

Debtors Condensed Combined Financial Statements (Debtors Condensed Combined Balance Sheet) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Assets
Current Assets	$ 127,807	$ 164,754
Property and Equipment, Net (None not subject to amortization)	229,781	469,509
Other Assets	71	72
Total Assets	458,769	734,576
Liabilities Not Subject To Compromise:
Other	41,531	66,077
Liabilities Subject to Compromise	840,992	841,044
Series C Convertible Preferred Stock - Liquidation Preference: $14,800	17,481	17,481
Stockholders' Equity	(974,004)	(776,141)
Total Liabilities and Stockholders' Equity	458,769	734,576
Property and equipment not subject to amortization	0	$ 10,784
Debtors [Member]
Assets
Current Assets	26,394
Property and Equipment, Net (None not subject to amortization)	13,269
Long-Term Receivables Due from Affiliates	663,801
Investments in Subsidiaries	295,816
Other Assets	9
Total Assets	999,289
Liabilities Not Subject To Compromise:
Accrued expenses and other	12,580
Current Liabilities Due to Affiliates	105,486
Other	626
Liabilities Subject to Compromise	840,992
Series C Convertible Preferred Stock - Liquidation Preference: $14,800	17,481
Stockholders' Equity	22,124
Total Liabilities and Stockholders' Equity	999,289
Property and equipment not subject to amortization	0
Preferred stock liquidation preference	$ 14,800

Debtors Condensed Combined Fi35

Debtors Condensed Combined Financial Statements (Debtors Condensed Combined Statement Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues	$ 71,818	$ 44,857	$ 136,147	$ 139,021
Cost of Operations	136,798	44,338	301,738	121,326
Income (Loss) From Operations	(64,980)	519	(165,591)	17,695
Other Income (Expense):
Financing and transaction costs	(4,388)	(1,425)	(5,413)	(3,241)
Reorganization items	(6,535)		(13,401)
Other expense	(715)	23	(609)	(182)
Total Other Expense	(24,147)	(37,604)	(46,338)	(96,082)
Net Loss	$ (87,627)	$ (36,673)	(198,288)	$ (81,544)
Debtors [Member]
Revenues			3,396
Cost of Operations			32,821
Income (Loss) From Operations			(29,425)
Other Income (Expense):
Interest income			30,000
Financing and transaction costs			(41)
Reorganization items			(13,401)
Other expense			(8)
Total Other Expense			16,550
Net Loss			$ (12,875)

Debtors Condensed Combined Fi36

Debtors Condensed Combined Financial Statements (Debtors Condensed Combined Cash Flow) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating	$ (12,138)	$ 59,930
Investing	(21,198)	(27,865)
Financing		16,402
Net Increase (Decrease) in Cash and Cash Equivalents	(33,336)	48,467
Cash and Cash Equivalents, Beginning of Period	81,850	34,742
Cash and Cash Equivalents, End of Period	48,514	$ 83,209
Debtors [Member]
Operating	23,449
Investing	(7,519)
Financing	(29,579)
Net Increase (Decrease) in Cash and Cash Equivalents	(13,649)
Cash and Cash Equivalents, Beginning of Period	32,066
Cash and Cash Equivalents, End of Period	$ 18,417

Liabilities Subject To Compro37

Liabilities Subject To Compromise (Narrative) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2015USD ($)
Liabilities Subject To Compromise [Abstract]
Contractual interest not accrued	$ 42.6

Liabilities Subject To Compro38

Liabilities Subject To Compromise (Schedule Of Liabilities Subject To Compromise) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Debt	$ 790,246	$ 790,246
Total Liabilities Subject to Compromise	840,992	$ 841,044
Debtors [Member]
Accounts Payable	6,027
Debt	790,246
Accrued Interest and Dividends	44,719
Total Liabilities Subject to Compromise	$ 840,992

Property And Equipment (Narrati

Property And Equipment (Narrative) (Details)	3 Months Ended				6 Months Ended		9 Months Ended
	Jun. 30, 2015USD ($)$ / bbl$ / Mcf	Mar. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Jun. 30, 2014USD ($)$ / bbl$ / Mcf	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)
Business Acquisition [Line Items]
Directly related employee costs capitalized	$ 1,300,000			$ 2,900,000	$ 3,700,000	$ 6,000,000
Impairment of oil and gas properties	$ 42,932,000				133,019,000
Average price per barrel, oil | $ / bbl	71.68			100.27
Average price per barrel, gas | $ / Mcf	3.39			4.09
Proceeds from insurance claim	$ 7,800,000	$ 8,400,000	$ 13,000,000				$ 29,200,000
U.K. Activities [Member]
Business Acquisition [Line Items]
Properties not subject to amortization	0		0		0		$ 0
Exploration and development related capitalized costs	$ 0			$ 2,400,000	$ 0	$ 5,000,000
Average price per barrel, oil | $ / bbl	75.98			108.64
Average price per barrel, gas | $ / Mcf	7.44			9.65
Marcellus Acreage [Member]
Business Acquisition [Line Items]
Properties not subject to amortization			$ 10,800,000

Property And Equipment (Schedul

Property And Equipment (Schedule Of Property And Equipment) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Oil and Gas Properties Under the Full Cost Method	$ 864,911	$ 1,000,542
Computers, Furniture and Fixtures	8,733	8,733
Total Property and Equipment	873,644	1,009,275
Accumulated Depreciation, Depletion and Amortization	(643,863)	(539,766)
Net Property and Equipment	229,781	469,509
Proved Properties [Member]
Property, Plant and Equipment [Line Items]
Oil and Gas Properties Under the Full Cost Method	$ 864,911	989,758
Unproved Properties, Incurred In 2014 [Member]
Property, Plant and Equipment [Line Items]
Oil and Gas Properties Under the Full Cost Method		945
Unproved Properties, Incurred In 2013 [Member]
Property, Plant and Equipment [Line Items]
Oil and Gas Properties Under the Full Cost Method		774
Unproved Properties, Incurred Prior To 2013 [Member]
Property, Plant and Equipment [Line Items]
Oil and Gas Properties Under the Full Cost Method		$ 9,065

Debt Obligations (Amended Term

Debt Obligations (Amended Term Loan Facility) (Details)	Sep. 30, 2014USD ($)item	Jun. 30, 2015USD ($)	Dec. 31, 2014USD ($)	Jan. 24, 2014USD ($)
Debt Instrument [Line Items]
Outstanding debt		$ 1,230,246,000	$ 1,230,246,000
Amended Term Loan Facility [Member]
Debt Instrument [Line Items]
Number of subsidiaries | item	2
Credit facility initiation date		Jan. 24, 2014
Debt principal amount				$ 125,000,000
Amount advanced	$ 440,000,000	$ 440,000,000
Debt maturity date		Jan. 2, 2017
Discount rate	2.00%
London Interbank Offered Rate (LIBOR) [Member] | Amended Term Loan Facility [Member]
Debt Instrument [Line Items]
LIBOR floor rate	1.00%
London Interbank Offered Rate (LIBOR) [Member] | Monetary Production Payments [Member]
Debt Instrument [Line Items]
Interest rate	10.00%
Minimum [Member] | Amended Term Loan Facility [Member]
Debt Instrument [Line Items]
Asset coverage ratio		1
Maximum [Member] | Amended Term Loan Facility [Member]
Debt Instrument [Line Items]
Leverage ratio			2.75

Debt Obligations (Senior Notes

Debt Obligations (Senior Notes Narrative) (Details) - USD ($)	Sep. 02, 2014	Oct. 31, 2012	Feb. 29, 2012
First Priority Notes [Member]
Debt Instrument [Line Items]
Debt principal amount		$ 54,000,000	$ 350,000,000
Interest rate	12.00%	12.00%	12.00%
Second Priority Notes [Member]
Debt Instrument [Line Items]
Debt principal amount			$ 150,000,000
Interest rate	12.00%		12.00%

Debt Obligations (5.5% Converti

Debt Obligations (5.5% Convertible Senior Notes Narrative) (Details) - Convertible Senior Notes, 5.5% Fixed Rate, Due 2016 [Member]	1 Months Ended	6 Months Ended
	Jul. 31, 2011USD ($)$ / shares	Jun. 30, 2015	Dec. 31, 2014	Oct. 10, 2014
Debt Instrument [Line Items]
Debt principal amount | $	$ 135,000,000
Interest rate	5.50%	5.50%	5.50%	5.50%
Debt maturity date		Jul. 15, 2016
Conversion rate	0.054019
Conversion price	$ 18.51

Debt Obligations (7.5% Converti

Debt Obligations (7.5% Convertible Bonds) (Details)	6 Months Ended
	Jun. 30, 2015$ / shares	Dec. 31, 2014	Oct. 10, 2014	Jun. 30, 2014	Jul. 31, 2008
7.5% Fixed Rate [Member]
Debt Instrument [Line Items]
Interest rate	7.50%	7.50%	7.50%		7.50%
Conversion price	$ 16.52
Conversion rate	0.061
11.5% Convertible Bonds [Member]
Debt Instrument [Line Items]
Interest rate				11.50%

Debt Obligations (6.5% Converti

Debt Obligations (6.5% Convertible Senior Notes Narrative) (Details) $ / shares in Units, shares in Millions	Feb. 28, 2014$ / shares	Jun. 30, 2015	Jun. 30, 2014USD ($)$ / sharesshares	Dec. 31, 2014
Securities Purchase Agreement [Member]
Debt Instrument [Line Items]
Credit facility initiation date		Feb. 28, 2014
Value of common stock, warrants and convertible notes issued | $			$ 30,000,000
Common stock, shares issued | shares			2.9
Number of common stock shares warrants can be converted into | shares			0.7
Warrants exercise price			$ 5.292
Warrants expiration date		Feb. 28, 2019
Convertible Senior Notes, 6.5% Fixed Rate, Due 2017 [Member]
Debt Instrument [Line Items]
Debt principal amount | $			$ 17,500,000
Interest rate		6.50%	6.50%	6.50%
Conversion rate	0.2145002
Conversion price	$ 4.662

Debt Obligations (Fair Value Na

Debt Obligations (Fair Value Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt obligations outstanding	$ 447.4	$ 446.1

Debt Obligations (Schedule Of D

Debt Obligations (Schedule Of Debt) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Oct. 10, 2014	Jun. 30, 2014	Jul. 31, 2011	Jul. 31, 2008
Debt Instrument [Line Items]
Total Liabilities Subject to Compromise	$ 790,246	$ 790,246
Liabilities Not Subject to Compromise	574,300	652,192
Total Debt Obligations	1,230,246	1,230,246
Less: Debt Discount	(5,888)	(7,819)
Less: Liabilities Subject to Compromise	(790,246)	(790,246)
Less: current maturities	(434,112)	(432,181)
Senior Notes,12% Fixed Rate, Due 2018 [Member]
Debt Instrument [Line Items]
Total Liabilities Subject to Compromise	554,000	554,000
Less: Liabilities Subject to Compromise	$ (554,000)	$ (554,000)
Interest rate	12.00%	12.00%
Convertible Senior Notes, 5.5% Fixed Rate, Due 2016 [Member]
Debt Instrument [Line Items]
Total Liabilities Subject to Compromise	$ 135,000	$ 135,000
Less: Liabilities Subject to Compromise	$ (135,000)	$ (135,000)
Interest rate	5.50%	5.50%	5.50%		5.50%
Convertible bonds, 11.5% until March 31, 2014 and 7.5% thereafter, due 2016 [Member]
Debt Instrument [Line Items]
Total Liabilities Subject to Compromise	$ 83,746	$ 83,746
Less: Liabilities Subject to Compromise	$ (83,746)	$ (83,746)
Interest rate	11.50%	11.50%
7.5% Fixed Rate [Member]
Debt Instrument [Line Items]
Interest rate	7.50%	7.50%	7.50%			7.50%
Convertible Senior Notes, 6.5% Fixed Rate, Due 2017 [Member]
Debt Instrument [Line Items]
Total Liabilities Subject to Compromise	$ 17,500	$ 17,500
Less: Liabilities Subject to Compromise	$ (17,500)	$ (17,500)
Interest rate	6.50%	6.50%		6.50%
Amended Term Loan Facility, Due 2017 [Member]
Debt Instrument [Line Items]
Liabilities Not Subject to Compromise	$ 440,000	$ 440,000

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2014	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2015	Jun. 30, 2014
Operating Loss Carryforwards [Line Items]
U.S. statutory rate				35.00%
Foreign statutory rate	62.00%			50.00%
Expenditure percentage				62.50%
Deferred tax benefit				$ (12,999)	$ (7,951)
Deferred tax benefit from enactment of Investment Allowance		$ 5,600
Ring Fence Corporation Tax [Member]
Operating Loss Carryforwards [Line Items]
Foreign statutory rate	30.00%
Supplementary Charge [Member]
Operating Loss Carryforwards [Line Items]
Foreign statutory rate	32.00%			20.00%
Deferred tax benefit				$ 11,400
Petroleum Revenue Tax [Member]
Operating Loss Carryforwards [Line Items]
Foreign statutory rate				50.00%
Deferred tax benefit			$ (7,900)
PRT Rate Beginning On January 1, 2016 [Member]
Operating Loss Carryforwards [Line Items]
Foreign statutory rate				35.00%

Other Long-Term Liabilities (Sc

Other Long-Term Liabilities (Schedule Of Other Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Other Long-Term Liabilities [Abstract]
Asset Retirement Obligations	$ 41,399	$ 65,935	$ 121,541
Other	132	142
Total Other Liabilities	$ 41,531	$ 66,077

Other Long-Term Liabilities (50

Other Long-Term Liabilities (Schedule Of Asset Retirement Obligations) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Other Long-Term Liabilities [Abstract]
Carrying amount of asset retirement obligations as of the beginning of period	$ 106,482	$ 170,429
Accretion expense (included in DD&A expense)	7,056	12,598
Impact of foreign currency exchange rate changes	(369)	5,673
Payment of asset retirement obligations	(26,302)	(20,601)
Revision of prior estimates	(27,130)
Liabilities incurred and assumed		3,265
Carrying amount of asset retirement obligations, as of end of period	59,737	171,364
Less: Current portion of asset retirement obligations	(18,338)	(49,823)	$ (40,547)
Long-term asset retirement obligations	$ 41,399	$ 121,541	$ 65,935

Equity Transactions (Narrative)

Equity Transactions (Narrative) (Details) - Securities Purchase Agreement [Member] - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended	6 Months Ended
	Feb. 28, 2014	Jun. 30, 2015
Class of Warrant or Right [Line Items]
Common stock, shares issued	2.9
Number of common stock shares warrants can be converted into	0.7
Value of common stock issued	$ 12.5
Warrants exercise price	$ 5.292
Warrants expiration date		Feb. 28, 2019

Stock-Based Compensation Arra52

Stock-Based Compensation Arrangements (Narrative) (Details) - Jun. 30, 2015 - USD ($) $ in Millions	Total
Vesting period	3 years
Compensation cost related to awards not yet recognized.	$ 2.9
Performance period	3 years
Maximum [Member]
Unrecognized compensation cost, recognition period	2 years
Range Of Shares Percent	200.00%
Minimum [Member]
Range Of Shares Percent	0.00%

Stock-Based Compensation Arra53

Stock-Based Compensation Arrangements (Schedule Of General And Administrative Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total non-cash stock-based compensation	$ 464	$ 1,611	$ 425	$ 2,745
G&A Expenses [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
G&A Expenses (Income)	317	1,234	307	1,387
Capitalized G&A [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
G&A Expenses (Income)	$ 147	$ 377	$ 118	$ 1,358

Stock-Based Compensation Arra54

Stock-Based Compensation Arrangements (Schedule Of Outstanding Stock Options) (Details) - Jun. 30, 2015 - $ / shares shares in Thousands	Total
Stock-Based Compensation Arrangements [Abstract]
Balance outstanding, Number of Shares Underlying Options	107
Expired, Number of Shares Underlying Options	(87)
Balance outstanding, Number of Shares Underlying Options	20
Currently exercisable, Number of Shares Underlying Options	20
Balance outstanding, Weighted Average Exercise Price per Share	$ 7.76
Expired, Weighted Average Exercise Price per Share	8.21
Balance outstanding, Weighted Average Exercise Price per Share	5.83
Currently exercisable, Weighted Average Exercise Price per Share	$ 5.83
Balance outstanding, Weighted Average Contractual Life in Years	3 years 2 months 12 days
Currently exercisable, Weighted Average Contractual Life in Years	3 years 2 months 12 days

Stock-Based Compensation Arra55

Stock-Based Compensation Arrangements (Schedule Of Restricted Shares Granted) (Details) - 6 months ended Jun. 30, 2015 - Restricted Stock [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	Total
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance outstanding, Number of Shares	740
Vested, Number of Shares	(285)
Forfeited, Number of Shares	(32)
Balance outstanding, Number of Shares	423
Total grant date fair value of shares vesting during the period	$ 44.4
Balance outstanding, Weighted Average Grant Date Fair Value per Share	$ 4.93
Vested, Weighted Average Grant Date Fair Value per Share	5.81
Forfeited, Weighted Average Grant Date Fair Value per Share	5.56
Balance outstanding, Weighted Average Grant Date Fair Value per Share	$ 4.32

Stock-Based Compensation Arra56

Stock-Based Compensation Arrangements (Schedule Of Performance-Based Share Awards) (Details) - 6 months ended Jun. 30, 2015 - Performance Shares [Member] - $ / shares shares in Thousands	Total
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance outstanding, Number of Shares	424
Forfeited, Number of Shares	(26)
Balance outstanding, Number of Shares	398
Balance outstanding, Weighted Average Grant Date Fair Value per Share	$ 8.05
Forfeited, Weighted Average Grant Date Fair Value per Share	7.91
Balance outstanding, Weighted Average Grant Date Fair Value per Share	$ 8.05

Loss Per Share (Schedule Of Com

Loss Per Share (Schedule Of Common Shares Potentially Issuable) (Details) - shares shares in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common shares potentially issuable	28,026	30,420
Warrants, Options And Stock-Based Compensation [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common shares potentially issuable	10,218	10,167
Convertible Debt [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common shares potentially issuable	16,117	16,024
Convertible Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common shares potentially issuable	1,691	4,229

Supplemental Cash Flow Inform58

Supplemental Cash Flow Information (Schedule Of Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Supplemental Cash Flow Information [Abstract]
Interest paid	$ 24,334	$ 47,814
Income taxes paid (refunded), all related to PRT	18,041	$ (14,002)
Reorganization items paid	$ 12,828

Commitments And Contingencies (

Commitments And Contingencies (LC Issuance Agreement) (Details) $ in Thousands, £ in Millions	Jun. 30, 2015GBP (£)	Jun. 30, 2015USD ($)	Dec. 31, 2014USD ($)	Sep. 30, 2014USD ($)
Commitments And Contingencies [Line Items]
Restricted Cash, Long-Term Portion | $		$ 101,110	$ 100,241
LC Issuance Agreement [Member]
Commitments And Contingencies [Line Items]
Letters of credit amount	£ 63.1
Restricted Cash, Long-Term Portion | $		101,100
LC Issuance Agreement [Member] | Alba [Member]
Commitments And Contingencies [Line Items]
Letters of credit amount	42.5
LC Issuance Agreement [Member] | IVRRH [Member]
Commitments And Contingencies [Line Items]
Letters of credit amount	11.9
LC Issuance Agreement [Member] | Renee And Rubie [Member]
Commitments And Contingencies [Line Items]
Letters of credit amount	£ 8.7
Amended Term Loan Facility [Member]
Commitments And Contingencies [Line Items]
Amount advanced | $		$ 440,000		$ 440,000

Commitments And Contingencies60

Commitments And Contingencies (Combined Procurement Agreement) (Details) - Combined Procurement Agreement [Member] £ in Millions, $ in Millions	Sep. 30, 2014USD ($)	Jan. 24, 2014GBP (£)
Line of Credit Facility [Line Items]
Maximum credit amount | £		£ 78
Repayment of outstanding interest	$ 1.9
Repayment of outstanding fees	$ 2.4
London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate		7.00%
Interest rate		1.25%

Commitments And Contingencies61

Commitments And Contingencies (Terminated Acquisition Of Marcellus Assets) (Details) - USD ($) $ / shares in Units, shares in Millions	Apr. 16, 2014	Jun. 30, 2014
Loss Contingencies [Line Items]
Litigation settlement expense		$ 19,034,000
SM Energy Litigation [Member]
Loss Contingencies [Line Items]
Amount of deposit forfeited	$ 6,000,000
Settlement amount	5,000,000
Note issuance amount	$ 4,500,000
Number of common stock shares warrants can be converted into	2.1
Warrants exercise price	$ 5.29

Guarantor Subsidiaries (Balance

Guarantor Subsidiaries (Balance Sheet) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	$ 48,514	$ 81,850	$ 83,209	$ 34,742
Accounts receivable	52,868	35,507
Prepaid expenses and other current assets	26,425	47,397
Current Assets	127,807	164,754
Property and equipment, net	229,781	469,509
Restricted cash, long-term portion	101,110	100,241
Other assets	71	72
Total Assets	458,769	734,576
Accounts payable	34,809	27,364
Current maturities of debt	434,112	432,181
Deferred revenue	40	14,157
Asset retirement obligations, current portion	18,338	40,547	49,823
Accrued expenses and other	10,990	15,196
Current Liabilities	498,289	529,445
Deferred taxes	34,480	56,670
Other liabilities	41,531	66,077
Total Liabilities Not Subject to Compromise	574,300	652,192
Liabilities Subject to Compromise	840,992	841,044
Series C convertible preferred stock	17,481	17,481
Stockholder's equity (deficit)	(974,004)	(776,141)
Total Liabilities and Equity	458,769	734,576
Eliminations [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Current receivables due from affiliates	(698,478)	(634,610)
Current Assets	(698,478)	(634,610)
Long-term receivables due from affiliates	(1,054,000)	(1,054,000)
Investments in subsidiaries	(276,720)	(276,720)
Total Assets	(2,029,198)	(1,965,330)
Current liabilities due to affiliates	(698,483)	(634,610)
Current Liabilities	(698,483)	(634,610)
Long-term liabilities due to affiliates	(1,054,000)	(1,054,000)
Other liabilities	5
Total Liabilities Not Subject to Compromise	(1,752,478)	(1,688,610)
Stockholder's equity (deficit)	(276,720)	(276,720)
Total Liabilities and Equity	(2,029,198)	(1,965,330)
Endeavour International Corporation [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Current receivables due from affiliates	511,034	477,351
Current Assets	511,034	477,351
Long-term receivables due from affiliates	554,000	554,000
Investments in subsidiaries	57,662	57,662
Total Assets	1,122,696	1,089,013
Current liabilities due to affiliates	648	648
Accrued expenses and other	446	385
Current Liabilities	1,094	1,033
Other liabilities		1
Total Liabilities Not Subject to Compromise	1,094	1,034
Liabilities Subject to Compromise	751,220	751,219
Series C convertible preferred stock	17,481	17,481
Stockholder's equity (deficit)	352,901	319,279
Total Liabilities and Equity	1,122,696	1,089,013
Combined Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	18,408	32,055	2,044	2,417
Accounts receivable	3,487	2,427
Current receivables due from affiliates	83,036	53,174
Prepaid expenses and other current assets	4,484	7,350
Current Assets	109,415	95,006
Property and equipment, net	13,269	35,529
Long-term receivables due from affiliates	500,000	500,000
Investments in subsidiaries	219,058	219,058
Other assets	9	10
Total Assets	841,751	849,603
Accounts payable	4,629	2,065
Current liabilities due to affiliates	615,353	581,402
Asset retirement obligations, current portion	41	42
Accrued expenses and other	7,396	5,663
Current Liabilities	627,419	589,172
Long-term liabilities due to affiliates	554,000	554,000
Other liabilities	446	436
Total Liabilities Not Subject to Compromise	1,181,865	1,143,608
Liabilities Subject to Compromise	6,026	6,079
Stockholder's equity (deficit)	(346,140)	(300,084)
Total Liabilities and Equity	841,751	849,603
Combined Non- Guarantor Subsidiaries [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	30,106	49,795	$ 81,165	$ 32,325
Accounts receivable	49,381	33,080
Current receivables due from affiliates	104,408	104,085
Prepaid expenses and other current assets	21,941	40,047
Current Assets	205,836	227,007
Property and equipment, net	216,512	433,980
Restricted cash, long-term portion	101,110	100,241
Other assets	62	62
Total Assets	523,520	761,290
Accounts payable	30,180	25,299
Current maturities of debt	434,112	432,181
Deferred revenue	40	14,157
Current liabilities due to affiliates	82,482	52,560
Asset retirement obligations, current portion	18,297	40,505
Accrued expenses and other	3,148	9,148
Current Liabilities	568,259	573,850
Long-term liabilities due to affiliates	500,000	500,000
Deferred taxes	34,480	56,670
Other liabilities	41,080	65,640
Total Liabilities Not Subject to Compromise	1,143,819	1,196,160
Liabilities Subject to Compromise	83,746	83,746
Stockholder's equity (deficit)	(704,045)	(518,616)
Total Liabilities and Equity	$ 523,520	$ 761,290

Guarantor Subsidiaries (Income

Guarantor Subsidiaries (Income Statement) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Income Statements, Captions [Line Items]
Revenue	$ 71,818	$ 44,857	$ 136,147	$ 139,021
Operating expenses	37,130	6,847	61,276	34,017
DD&A expense	54,592	32,251	111,153	77,220
Impairment of oil and gas properties	42,932		133,019
Insurance proceeds	(2,046)		(10,472)
G&A expense (income)	4,190	5,240	6,762	10,089
Income (Loss) From Operations	(64,980)	519	(165,591)	17,695
Unrealized gains on derivatives		2,010		4,669
Interest expense	(14,366)	(31,431)	(28,717)	(62,908)
Letter of credit fees	(62)	(2,270)	(120)	(6,059)
Financing and transaction costs	(4,388)	(1,425)	(5,413)	(3,241)
Loss on early extinguishment of financing agreements				(3,543)
Litigation settlement expense				(19,034)
Reorganization items	(6,535)		(13,401)
Unrealized foreign currency gains (losses)	1,919	(4,511)	1,922	(5,784)
Other income (expense)	(715)	23	(609)	(182)
Income (Loss) Before Income Taxes	(89,127)	(37,085)	(211,929)	(78,387)
PRT expense (benefit)	(1,500)	2,243	(13,641)	3,968
Corporate tax benefit		(2,655)		(811)
Total tax benefit	(1,500)	(412)	(13,641)	3,157
Net income (loss)	(87,627)	(36,673)	(198,288)	(81,544)
Preferred Stock Dividends		456		911
Net income (loss) to common shareholders	(87,627)	(37,129)	(198,288)	(82,455)
Eliminations [Member]
Condensed Income Statements, Captions [Line Items]
Interest expense	31,620	31,620	63,240	63,240
Other income (expense)	(31,620)	(31,620)	(63,240)	(63,240)
Endeavour International Corporation [Member]
Condensed Income Statements, Captions [Line Items]
G&A expense (income)	9	891	43	1,886
Income (Loss) From Operations	(9)	(891)	(43)	(1,886)
Unrealized gains on derivatives		160		629
Interest expense		(21,161)		(41,781)
Financing and transaction costs		(193)		(516)
Other income (expense)	16,620	16,620	33,240	33,240
Income (Loss) Before Income Taxes	16,611	(5,465)	33,197	(10,314)
Net income (loss)	16,611	(5,465)	33,197	(10,314)
Preferred Stock Dividends		456		911
Net income (loss) to common shareholders	16,611	(5,921)	33,197	(11,225)
Combined Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenue	2,313	1,729	3,395	3,678
Operating expenses	1,844	1,124	3,134	2,304
DD&A expense	975	703	1,537	1,425
Impairment of oil and gas properties	18,308		28,386
G&A expense (income)	369	1,226	(281)	4,936
Income (Loss) From Operations	(19,183)	(1,324)	(29,381)	(4,987)
Interest expense	(16,620)	(16,066)	(33,240)	(32,108)
Financing and transaction costs	21	(929)	(24)	(1,519)
Litigation settlement expense				(19,034)
Reorganization items	(6,535)		(13,401)
Unrealized foreign currency gains (losses)	1	1		1
Other income (expense)	14,968	15,000	29,989	29,995
Income (Loss) Before Income Taxes	(27,348)	(3,318)	(46,057)	(27,652)
Net income (loss)	(27,348)	(3,318)	(46,057)	(27,652)
Net income (loss) to common shareholders	(27,348)	(3,318)	(46,057)	(27,652)
Combined Non- Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Revenue	69,505	43,128	132,752	135,343
Operating expenses	35,286	5,723	58,142	31,713
DD&A expense	53,617	31,548	109,616	75,795
Impairment of oil and gas properties	24,624		104,633
Insurance proceeds	(2,046)		(10,472)
G&A expense (income)	3,812	3,123	7,000	3,267
Income (Loss) From Operations	(45,788)	2,734	(136,167)	24,568
Unrealized gains on derivatives		1,850		4,040
Interest expense	(29,366)	(25,824)	(58,717)	(52,259)
Letter of credit fees	(62)	(2,270)	(120)	(6,059)
Financing and transaction costs	(4,409)	(303)	(5,389)	(1,206)
Loss on early extinguishment of financing agreements				(3,543)
Unrealized foreign currency gains (losses)	1,918	(4,512)	1,922	(5,785)
Other income (expense)	(683)	23	(598)	(177)
Income (Loss) Before Income Taxes	(78,390)	(28,302)	(199,069)	(40,421)
PRT expense (benefit)	(1,500)	2,243	(13,641)	3,968
Corporate tax benefit		(2,655)		(811)
Total tax benefit	(1,500)	(412)	(13,641)	3,157
Net income (loss)	(76,890)	(27,890)	(185,428)	(43,578)
Net income (loss) to common shareholders	$ (76,890)	$ (27,890)	$ (185,428)	$ (43,578)

Guarantor Subsidiaries (Cash Fl

Guarantor Subsidiaries (Cash Flow Statement) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Cash Flows from Operating Activities:
Net loss	$ (87,627)	$ (36,673)	$ (198,288)	$ (81,544)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation, depletion and amortization	54,592	32,251	111,153	77,220
Impairment of oil and gas properties	42,932		133,019
Deferred tax expense (benefit)			(12,999)	(7,951)
Unrealized (gains) losses on derivatives		(2,010)		(4,669)
Amortization of non-cash compensation			307	2,123
Amortization of loan costs and discount			4,357	13,376
Non-cash interest expense				3,812
Loss on early extinguishment of debt				6,856
Litigation settlement expense				14,034
Other			(345)	6,605
Changes in operating assets and liabilities:
(Increase) decrease in receivables			(17,361)	20,702
Decrease (increase) in other current assets			9,353	(12,887)
Increase (decrease) in liabilities			(41,334)	22,253
Net Cash Provided by (Used in) Operating Activities			(12,138)	59,930
Cash Flows From Investing Activities:
Capital expenditures			(20,329)	(39,302)
Proceeds from sale of oil and gas interests				1,352
Proceeds from insurance settlement				12,606
Increase in restricted cash			(869)	(2,521)
Net Cash Used in Investing Activities			(21,198)	(27,865)
Cash Flows From Financing Activities:
Repayments of borrowings				(115,699)
Borrowings under debt agreements, net of debt discount				140,625
Proceeds from issuance of common stock				12,336
Repayments of MPP				(10,833)
Financing costs paid				(9,193)
Other financing				(834)
Net Cash Provided by (Used in) Financing Activities				16,402
Net Change in Cash and Cash Equivalents			(33,336)	48,467
Cash and Cash Equivalents, Beginning of Period			81,850	34,742
Cash and Cash Equivalents, End of Period	48,514	83,209	48,514	83,209
Eliminations [Member]
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Amortization of non-cash compensation			121	1,993
Changes in operating assets and liabilities:
Net Cash Provided by (Used in) Operating Activities			121	1,993
Cash Flows From Investing Activities:
Capital expenditures			118	622
Net Cash Used in Investing Activities			118	622
Cash Flows From Financing Activities:
Intercompany cash management			(239)	(2,615)
Net Cash Provided by (Used in) Financing Activities			(239)	(2,615)
Endeavour International Corporation [Member]
Cash Flows from Operating Activities:
Net loss	16,611	(5,465)	33,197	(10,314)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Unrealized (gains) losses on derivatives		(160)		(629)
Amortization of non-cash compensation			186	130
Amortization of loan costs and discount				4,447
Changes in operating assets and liabilities:
Decrease (increase) in other current assets				(20)
Increase (decrease) in liabilities			62	(3,192)
Net Cash Provided by (Used in) Operating Activities			33,445	(9,578)
Cash Flows From Financing Activities:
Borrowings under debt agreements, net of debt discount				17,500
Proceeds from issuance of common stock				12,336
Financing costs paid				(621)
Intercompany cash management			(33,445)	(18,804)
Other financing				(833)
Net Cash Provided by (Used in) Financing Activities			(33,445)	9,578
Combined Guarantor Subsidiaries [Member]
Cash Flows from Operating Activities:
Net loss	(27,348)	(3,318)	(46,057)	(27,652)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation, depletion and amortization	975	703	1,537	1,425
Impairment of oil and gas properties	18,308		28,386
Litigation settlement expense				14,034
Other			32	1,684
Changes in operating assets and liabilities:
(Increase) decrease in receivables			(1,060)	(737)
Decrease (increase) in other current assets			2,865	(2,658)
Increase (decrease) in liabilities			4,202	8,664
Net Cash Provided by (Used in) Operating Activities			(10,095)	(5,240)
Cash Flows From Investing Activities:
Capital expenditures			(7,637)	(6,283)
Proceeds from sale of oil and gas interests				1,352
Net Cash Used in Investing Activities			(7,637)	(4,931)
Cash Flows From Financing Activities:
Intercompany cash management			4,085	9,797
Other financing				1
Net Cash Provided by (Used in) Financing Activities			4,085	9,798
Net Change in Cash and Cash Equivalents			(13,647)	(373)
Cash and Cash Equivalents, Beginning of Period			32,055	2,417
Cash and Cash Equivalents, End of Period	18,408	2,044	18,408	2,044
Combined Non- Guarantor Subsidiaries [Member]
Cash Flows from Operating Activities:
Net loss	(76,890)	(27,890)	(185,428)	(43,578)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation, depletion and amortization	53,617	31,548	109,616	75,795
Impairment of oil and gas properties	24,624		104,633
Deferred tax expense (benefit)			(12,999)	(7,951)
Unrealized (gains) losses on derivatives		(1,850)		(4,040)
Amortization of loan costs and discount			4,357	8,929
Non-cash interest expense				3,812
Loss on early extinguishment of debt				6,856
Other			(377)	4,921
Changes in operating assets and liabilities:
(Increase) decrease in receivables			(16,301)	21,439
Decrease (increase) in other current assets			6,488	(10,209)
Increase (decrease) in liabilities			(45,598)	16,781
Net Cash Provided by (Used in) Operating Activities			(35,609)	72,755
Cash Flows From Investing Activities:
Capital expenditures			(12,810)	(33,641)
Proceeds from insurance settlement				12,606
Increase in restricted cash			(869)	(2,521)
Net Cash Used in Investing Activities			(13,679)	(23,556)
Cash Flows From Financing Activities:
Repayments of borrowings				(115,699)
Borrowings under debt agreements, net of debt discount				123,125
Repayments of MPP				(10,833)
Financing costs paid				(8,572)
Intercompany cash management			29,599	11,622
Other financing				(2)
Net Cash Provided by (Used in) Financing Activities			29,599	(359)
Net Change in Cash and Cash Equivalents			(19,689)	48,840
Cash and Cash Equivalents, Beginning of Period			49,795	32,325
Cash and Cash Equivalents, End of Period	$ 30,106	$ 81,165	$ 30,106	$ 81,165