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Condensed Consolidated Statements of Equity (USD $) In Thousands | Common Shares of Beneficial Interest [Member] | Additional Paid-in Capital [Member] | Distributions in Excess of Net Income [Member] | Notes Receivable Secured by Common Shares [Member] | Treasury Shares, at Cost [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Noncontrolling Interests [Member] | Perpetual Preferred Units [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Perpetual preferred units, Beginning Balance at Dec. 31, 2009 |  |  |  |  |  |  |  | $ 97,925 |
Beginning Balance at Dec. 31, 2009 | 770 | 2,525,656 | (492,571) | (101) | (462,188) | (41,155) | 78,602 |  | 1,609,013
Net income (loss) |  |  | 4,419 |  |  |  | 110 | 3,500 | 4,529
Less income allocated to perpetual preferred units |  |  |  |  |  |  |  |  | 3,500
Other comprehensive income |  |  |  |  |  | (2,563) |  |  | (2,563)
Common shares issued | 23 | 106,399 |  |  |  |  |  |  | 106,422
Net share awards | 4 | 6,021 |  |  |  |  |  |  | 6,025
Employee stock purchase plan |  | (190) |  |  | 671 |  |  |  | 481
Common share options exercised | 1 | 2,131 |  |  |  |  |  |  | 2,132
Conversions of operating partnership units | 2 | 1,335 |  |  |  |  | (1,337) |  |
Distributions to perpetual preferred units |  |  |  |  |  |  |  | (3,500) |
Cash distributions declared to equity holders |  |  | (61,887) |  |  |  | (2,573) |  | (64,460)
Other | (2) | 2 |  | (1) |  |  |  |  | (1)
Perpetual preferred units, Ending Balance at Jun. 30, 2010 |  |  |  |  |  |  |  | 97,925 |
Ending Balance at Jun. 30, 2010 | 798 | 2,641,354 | (550,039) | (102) | (461,517) | (43,718) | 74,802 |  | 1,661,578
Perpetual preferred units, Beginning Balance at Dec. 31, 2010 |  |  |  |  |  |  |  | 97,925 | 97,925
Beginning Balance at Dec. 31, 2010 | 824 | 2,775,625 | (595,317) |  | (461,255) | (33,458) | 70,954 |  | 1,757,373
Net income (loss) |  |  | (9,311) |  |  |  | 1,357 | 3,500 | (7,954)
Less income allocated to perpetual preferred units |  |  |  |  |  |  |  |  | 3,500
Other comprehensive income |  |  |  |  |  | 33,551 |  |  | 33,551
Common shares issued | 6 | 37,120 |  |  |  |  |  |  | 37,126
Net share awards | 4 | 6,346 |  |  | 525 |  |  |  | 6,875
Employee stock purchase plan |  | 232 |  |  | 788 |  |  |  | 1,020
Common share options exercised | 1 | 3,774 |  |  | 808 |  |  |  | 4,583
Conversions of operating partnership units | 1 | 591 |  |  |  |  | (592) |  |
Distributions to perpetual preferred units |  |  |  |  |  |  |  | (3,500) |
Cash distributions declared to equity holders |  |  | (71,739) |  |  |  | (2,447) |  | (74,186)
Other | (2) | 2 |  |  |  |  |  |  |
Perpetual preferred units, Ending Balance at Jun. 30, 2011 |  |  |  |  |  |  |  | 97,925 | 97,925
Ending Balance at Jun. 30, 2011 | $ 834 | $ 2,823,690 | $ (676,367) |  | $ (459,134) | $ 93 | $ 69,272 |  | $ 1,758,388

X
- Definition Common stock cash dividend declared by an entity during the period. This element includes paid and unpaid dividends declared during the period. In addition, includes cash distributions to noncontrolling interest holders declared by an entity during the period. + Details
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- Definition Value of stock and change in APIC issued during the period upon the conversion of units and/or the decrease in noncontrolling interest as a result of redeeming the interests of noncontrolling shareholders. + Details
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- Definition Net income (loss) attributable to common shareholders and noncontrolling interests, excluding amounts allocated to perpetual preferred units. + Details
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- Definition Amount of net income (loss) for the period allocated to noncontrolling preferred unit holders in an entity included in the reporting entity's consolidated financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) + Details
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- Definition This element represents Other Comprehensive Income (Loss), Net of Tax, for the period. Includes deferred gains (losses) on qualifying hedges, unrealized holding gains (losses) on available-for-sale securities, minimum pension liability, and cumulative translation adjustment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 22, 23, 24, 25 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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- Definition Total of Stockholders' Equity (deficit) items, net of receivables from officers, directors owners, and affiliates of the entity including portions attributable to both the parent and noncontrolling interests (previously referred to as minority interest), if any. The entity including portions attributable to the parent and noncontrolling interests is sometimes referred to as the economic entity. This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 25 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 26 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A3 -Appendix A + Details
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- Definition Aggregate change in value for stock issued during the period as a result of employee stock purchase plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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- Definition Value stock issued during the period as a result of the exercise of stock options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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- Definition The carrying value (book value) of an entity's issued and outstanding stock which is not included within permanent equity in Stockholders Equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number D-98 -Paragraph 2 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 28 -Subparagraph a -Article 5 + Details
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