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Significant accounting policies (Policies) | 3 Months Ended
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Mar. 31, 2014
Significant accounting policies |
Basis of presentation | Basis of presentation The accompanying condensed consolidated financial statements are unaudited and include the accounts of the Company, the Operating Partnership and its consolidated subsidiaries. Intercompany accounts and transactions have been eliminated. The Company consolidates real estate partnerships and other entities that are not variable interest entities when it owns, directly or indirectly, a majority interest in the entity or is otherwise able to control the entity. Ownership interests in certain consolidated subsidiaries of the Company held by outside parties are included in noncontrolling interest in the accompanying condensed consolidated financial statements. The accompanying condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") and in conjunction with the rules and regulations of the Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures required for annual financial statements have been condensed or excluded pursuant to SEC rules and regulations. Accordingly, the accompanying condensed consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company's annual report on Form 10-K for the year ended December 31, 2013. In the opinion of management, all adjustments of a normal and recurring nature necessary for a fair presentation of the condensed consolidated financial statements for the interim periods have been made. The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. There have been no changes to our significant accounting policies that have had a material impact on our condensed consolidated financial statements and related notes and therefore notes to the condensed consolidated financial statements which would substantially duplicate the disclosure contained in the audited consolidated financial statements have been omitted.
Recently issued and adopted accounting standards | Recently issued and adopted accounting standards In April 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-08, "Presentation of Financial Statements and Property, Plant, and Equipment: Reporting Discontinued Operations and Disclosure of Disposals of Components of an Entity." The revised standard is intended to change the criteria for reporting discontinued operations. Under the new guidance, only disposals representing a strategic shift in operations should be presented as discontinued operations. Examples include disposals of a major geographic area, major line of business, or major equity method investment. In addition the new guidance will require expanded disclosures about discontinued operations that will provide more information about the assets, liabilities, income and expenses of discontinued operations. The guidance will be effective for all disposals of components (or classifications as held for sale) that occur within annual periods beginning on or after December 15, 2014 and is not expected to have a material impact on the Company's financial statements.

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- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). + References No definition available. + Details
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- Definition Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact. + References No definition available. + Details
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