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Consolidated Statements of Beneficiaries' Equity (USD $) In Thousands, except Share data | Total | 7.375% Series D Preferred Shares | Common Stock | Treasury Stock | Deferred Compensation Payable in Common Shares | Common Shares in Grantor Trust | Additional Paid-in Capital | Cumulative Earnings | Accumulated Other Comprehensive Income (Loss) | Cumulative Distributions | Non-Controlling Interests
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2010 | $ 1,977,774 | $ 43 | $ 1,343 | $ (3,074) | $ 5,774 | $ (5,774) | $ 2,671,217 | $ 483,439 | $ (1,945) | $ (1,301,521) | $ 128,272
Beginning Balance, shares at Dec. 31, 2010 |  | 4,300,000 | 134,601,796 | 116,679 | 291,281 |  |  |  |  |  |
Net income (loss) | (490) |  |  |  |  |  |  | (439) |  |  | (51)
Comprehensive income (loss) | (591) |  |  |  |  |  |  |  | (579) |  | (12)
Issuance of Common Shares of Beneficial Interest | 2,305 |  | 2 |  |  |  | 2,303 |  |  |  |
Issuance of Common Shares of Beneficial Interest, shares |  |  | 188,400 |  |  |  |  |  |  |  |
Equity issuance costs | (104) |  |  |  |  |  | (104) |  |  |  |
Bonus Share Issuance | 6 |  |  | 12 | 5 | (5) |  | (6) |  |  |
Bonus Share Issuance, shares |  |  |  | (463) | 463 |  |  |  |  |  |
Vesting of Restricted Shares | 144 |  |  | 2,462 |  |  | (1,518) | (800) |  |  |
Vesting of Restricted Shares, shares |  |  |  | (87,370) | 9,043 |  |  |  |  |  |
Restricted Share Amortization | 806 |  |  |  |  |  | 806 |  |  |  |
Restricted Performance Units Amortization | 330 |  |  |  |  |  | 330 |  |  |  |
Share Option Amortization | (16) |  |  |  | (146) | 146 | (16) |  |  |  |
Share Option Amortization, shares |  |  | (487) |  | (4,935) |  |  |  |  |  |
Outperformance Plan Amortization | (55) |  |  |  |  |  | (55) |  |  |  |
Outperformance Plan Amortization, shares |  |  | (1,684) |  |  |  |  |  |  |  |
Share Issuance from/to Deferred Compensation Plan | 344 |  |  |  |  |  | 344 |  |  |  |
Share Issuance from/to Deferred Compensation Plan, shares |  |  |  |  |  |  |  |  |  |  |
Share Choice Plan Issuance | 54 |  |  |  |  |  | 54 |  |  |  |
Adjustment to Non-controlling Interest | 0 |  |  |  |  |  | (210) |  |  |  | 210
Preferred Share distributions | (1,998) |  |  |  |  |  |  |  |  | (1,998) |
Distributions declared ($0.45), and ($0.15) per share in March 31, 2012 and March 31, 2011, respectively | (20,789) |  |  |  |  |  |  |  |  | (20,370) | (419)
Ending Balance at Mar. 31, 2011 | 1,957,720 | 43 | 1,345 | (600) | 5,633 | (5,633) | 2,673,151 | 482,194 | (2,524) | (1,323,889) | 128,000
Ending Balance, shares at Mar. 31, 2011 |  | 4,300,000 | 134,788,025 | 28,846 | 295,852 |  |  |  |  |  |
Beginning Balance at Dec. 31, 2011 | 1,889,696 | 43 | 1,424 | 0 | 5,631 | (5,631) | 2,776,197 | 477,338 | (6,079) | (1,392,332) | 33,105
Beginning Balance, shares at Dec. 31, 2011 |  | 4,300,000 | 142,690,755 | 0 | 292,646 |  |  |  |  |  |
Net income (loss) | 9,336 |  |  |  |  |  |  | 9,202 |  |  | 134
Comprehensive income (loss) | 75 |  |  |  |  |  |  |  | 74 |  | 1
Conversion of LP Units to Common Shares | (235) |  | 0 |  |  |  | 149 | (49) |  |  | (335)
Conversion of LP Units to Common Shares, shares |  |  | 20,464 |  |  |  |  |  |  |  |
Bonus Share Issuance | 387 |  |  |  |  |  | 387 |  |  |  |
Bonus Share Issuance, shares |  |  | 35,703 |  |  |  |  |  |  |  |
Vesting of Restricted Shares | (89) |  | 1 |  |  |  | (90) |  |  |  |
Vesting of Restricted Shares, shares |  |  | 30,820 |  | 9,036 |  |  |  |  |  |
Restricted Share Amortization | 678 |  |  |  |  |  | 678 |  |  |  |
Vesting of Restricted Performance Units | (1,328) |  | 3 |  |  |  | (1,331) |  |  |  |
Vesting of Restricted Performance Units, shares |  |  | 249,797 |  |  |  |  |  |  |  |
Restricted Performance Units Amortization | 479 |  |  |  |  |  | 479 |  |  |  |
Exercise of Stock Options, shares | 0 |  |  |  |  |  |  |  |  |  |
Share Option Amortization | 376 |  |  |  |  |  | 376 |  |  |  |
Share Issuance from/to Deferred Compensation Plan | 0 |  |  |  | (195) | 195 |  |  |  |  |
Share Issuance from/to Deferred Compensation Plan, shares |  |  | (5,389) |  | (8,560) |  |  |  |  |  |
Adjustment to Non-controlling Interest | 13 |  |  |  |  |  | 303 |  |  |  | (290)
Preferred Share distributions | (1,998) |  |  |  |  |  |  |  |  | (1,998) |
Distributions declared ($0.45), and ($0.15) per share in March 31, 2012 and March 31, 2011, respectively | (21,948) |  |  |  |  |  |  |  |  | (21,586) | (362)
Ending Balance at Mar. 31, 2012 | $ 1,875,442 | $ 43 | $ 1,428 | $ 0 | $ 5,436 | $ (5,436) | $ 2,777,148 | $ 486,491 | $ (6,005) | $ (1,415,916) | $ 32,253
Ending Balance, shares at Mar. 31, 2012 |  | 4,300,000 | 143,022,150 | 0 | 293,122 |  |  |  |  |  |

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