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Document and Entity Information (USD $) In Billions, except Share data, unless otherwise specified | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2013 | Feb. 21, 2014 | Jun. 28, 2013
Document Information [Line Items] |  |  |
Document Type | 10-K/A |  |
Amendment Flag | true |  |
Document Period End Date | Dec. 31, 2013 |  |
Document Fiscal Year Focus | 2013 |  |
Document Fiscal Period Focus | FY |  |
Trading Symbol | SD |  |
Entity Registrant Name | SANDRIDGE ENERGY INC |  |
Entity Central Index Key | 0001349436 |  |
Current Fiscal Year End Date | --12-31 |  |
Entity Well-known Seasoned Issuer | Yes |  |
Entity Current Reporting Status | Yes |  |
Entity Voluntary Filers | No |  |
Entity Filer Category | Large Accelerated Filer |  |
Entity Common Stock, Shares Outstanding |  | 495,085,274 dei_EntityCommonStockSharesOutstanding |
Entity Public Float |  |  | $ 2.3 dei_EntityPublicFloat
Amendment Description | EXPLANATORY NOTE SandRidge Energy, Inc. (the “Company”) is filing this amendment on Form 10-K/A (“Form 10-K/A”) to amend its Annual Report on Form 10-K for the year ended December 31, 2013, originally filed with the Securities and Exchange Commission (the “SEC”) on February 28, 2014 (“Original Filing”), to restate its consolidated financial statements and related footnote disclosures for the year ended December 31, 2013 as it relates to quarterly results included within “Note 26 - Quarterly Financial Results (Unaudited)” in Part II, Item 8 of this Form 10-K/A and to revise its consolidated financial statements and related footnote disclosures for the years ended December 31, 2013, 2012 and 2011 for other items discussed below. This Form 10-K/A also amends certain other items in the Original Filing, as listed in “Items Amended in this Form 10-K/A” below. Restatement On November 4, 2014, the Company filed a Current Report on Form 8-K, stating that (i) the consolidated financial statements of the Company for the periods ended December 31, 2013 and 2012 included in the Company’s Annual Reports on Form 10-K for the periods then ended and (ii) the unaudited consolidated financial statements of the Company for the periods ended June 30, 2014, March 31, 2014, September 30, 2013, June 30, 2013, and March 31, 2013 included in the Company’s Quarterly Reports on Form 10-Q for the periods then ended should no longer be relied upon due to potential changes related to the accrual of a liability associated with under delivery by the Company of CO2 to Occidental Petroleum Corporation’s (“Occidental”) Century Plant in Pecos County, Texas (the “Century Plant”) or elsewhere. Historically, based on its determination of the appropriate method of accounting for the annual CO2 delivery shortfall penalty, the Company did not evaluate whether an accrual was needed within each quarterly period prior to the fourth quarter. As a result of consultation with the staff of the SEC, the Company has determined to adopt a different method of accounting for the penalty, which method considers, on a quarterly basis, whether a portion of the annual shortfall delivery penalty should be accrued at the end of each quarter. After applying this method, the Company concluded that it should restate its previously issued unaudited condensed consolidated financial statements for the quarterly and year-to-date periods ended June 30, 2014, March 31, 2014, September 30, 2013, June 30, 2013, and March 31, 2013. The effect of such corrections is to transfer a portion of the annual accrual that was previously recorded at year-end to certain of the quarter-end periods within such calendar year. Accordingly, the Company has restated its 2013 quarterly financial results included in “Note 26 - Quarterly Financial Results (Unaudited)” in Part II, Item 8 of this Form 10-K/A for this matter. No changes are being made to the annual accruals previously recorded. As a result of the above-described adjustments, the Company is presenting in Forms 10-Q/A for the periods ended March 31, 2014 and June 30, 2014 (which are being filed concurrently herewith) restated consolidated financial statements for the periods indicated above. Corrections to statement of operations data for the quarters ended March 31, 2013 and June 30, 2013 will be reflected in the notes to the annual financial statements included in this 10-K/A as well as in the Forms 10-Q/A for the periods ended March 31, 2014 and June 30, 2014, respectively, and corrections to statement of operations data for the quarter ended September 30, 2013 will be reflected in the notes to the annual financial statements included in this 10-K/A as well as the Company’s quarterly report on Form 10-Q for the quarter ended September 30, 2014, which is also being filed concurrently herewith. Revision Additionally, as a result of consultation with the staff of the SEC, the Company has determined that construction of the Century Plant under a construction contract with Occidental should have been accounted for under the full cost method of accounting rather than the completed contract method of accounting. As of December 31, 2013, this change in accounting treatment had no impact on total assets, total liabilities, net income or retained earnings, but resulted in (i) certain equal and offsetting adjustments within current assets or current liabilities as of December 31, 2013 and December 2012, (ii) certain equal and offsetting adjustments within items comprising net cash provided by operating activities for the years ended December 31, 2013, 2012 and 2011, and (iii) the removal of construction contract revenue and expense, each in the amount of $796.3 million, from the consolidated statement of operations for the year ended December 31, 2012. The Company has determined that none of these revisions are material to the consolidated financial statements for any of the periods presented in the Original Filing. The consolidated balance sheets as of December 31, 2013 and 2012, consolidated statements of cash flows for the years ended December 31, 2013, 2012 and 2011 and consolidated statement of operations for the year ended December 31, 2012 contained in Part II, Item 8 of this Form 10-K/A have been revised to include the impact of these items. See the Company’s consolidated financial statements in Item 8 of this report for more information regarding the impact of the above-described restatement and revisions. Internal Control Consideration The Company’s management has determined that the absence of an evaluation of whether an accrual for the annual CO2 delivery shortfall penalty was required within each quarterly period prior to the fourth quarter, in accordance with its prior method of accounting, was a deficiency in its internal control over financial reporting that constitutes a material weakness, as defined by SEC regulations, at December 31, 2013, as discussed in Part II, Item 9A of this Form 10-K/A. Items Amended in this Form 10-K/A For the convenience of the reader, this Form 10-K/A sets forth the Original Filing, in its entirety, as modified and superseded where necessary to reflect the restatement and other revisions described above. The following items in the Original Filing have been amended as a result of, and to reflect, these modifications: Part I, Item 1. Business Part II, Item 6. Selected Financial Data Part II, Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations Part II, Item 8. Financial Statements and Supplementary Data Part II, Item 9A. Controls and Procedures Part IV, Item 15. Exhibits and Financial Statement Schedules This Form 10-K/A is presented as of the date of the Original Filing and does not reflect events occurring after that date, or modify or update the information contained therein in any way other than as required to reflect the restatement and revisions described above. In accordance with Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), this Form 10-K/A includes certifications from the Company’s Chief Executive Officer and Chief Financial Officer as of the date of this filing. |  |

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