Summary of significant accounting policies	9 Months Ended
Summary of significant accounting policies	Sep. 30, 2011
Summary of significant accounting policies [Abstract]
Summary of significant accounting policies	Note 1 — Summary of significant accounting policies Our significant accounting policies, normally included in financial statements prepared in conformity with generally accepted accounting principles, have been omitted from this Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). However, we believe the disclosures contained in this Form 10-Q are adequate to fairly state the information when read in conjunction with the notes to the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2010. For a full description of our accounting policies, refer to the Notes to Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2010. We believe the accompanying unaudited consolidated financial statements reflect all adjustments (consisting of only normal recurring adjustments) necessary to state fairly the unaudited consolidated balance sheet at September 30, 2011, the unaudited consolidated statement of operations for the three and nine months ended September 30, 2011 and 2010, the unaudited consolidated statement of changes in stockholders’ equity for the nine months ended September 30, 2011, and the unaudited consolidated statement of cash flows for the nine months ended September 30, 2011 and 2010. Operating results for the three and nine months ended September 30, 2011 are not necessarily indicative of the results that may be expected for the year ending December 31, 2011. *New Accounting Guidance.* In September 2011, the Financial Accounting Standards Board (“FASB”) issued authoritative guidance allowing entities testing goodwill for impairment to perform a qualitative assessment to determine whether further impairment testing is necessary. If entities determine, on the basis of qualitative factors, that it is more likely than not that a reporting unit’s fair value is greater than the carrying amount, a quantitative calculation may not be needed. This update is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011. We plan to early adopt the guidance as permitted by the new standard in the fourth quarter of 2011. Adoption of the standard is not expected to have a material impact on our financial position, results of operations, or cash flows. In June 2011, the FASB issued authoritative guidance eliminating the option to report other comprehensive income and its components in the statement of changes in equity. Under the new guidance, an entity can elect to present items of net income and other comprehensive income in a single continuous statement or in two separate but consecutive statements. This update is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2011. Adoption of the standard will impact the presentation of certain information within the financial statements, but is not expected to have an impact on our financial position, results of operations, or cash flows. In May 2011, the FASB issued authoritative guidance containing changes to certain aspects of the measurement of fair value of assets and liabilities and requiring additional disclosures around assets and liabilities measured at fair value using Level 3 inputs (see Note 2 below) as well as disclosures about the use of nonfinancial assets measured or disclosed at fair value if their use differs from their highest and best use. This statement is effective for financial statements issued for annual periods beginning on or after December 15, 2011. Adoption of the standard is not expected to have an impact on our financial position, results of operations, or cash flows.