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CONSOLIDATED STATEMENTS OF EQUITY (USD $) | Total | Total Stockholders' Equity | Preferred Stock | Common Stock | Capital in Excess of Par Value | Cumulative Net Income | Other | Cumulative Distributions | Non-controlling Interests | Series E Preferred Stock | Series E Preferred Stock Total Stockholders' Equity | Series E Preferred Stock Preferred Stock | Series E Preferred Stock Capital in Excess of Par Value | Series E Preferred Stock Cumulative Distributions | Series F Preferred Stock | Series F Preferred Stock Total Stockholders' Equity | Series F Preferred Stock Preferred Stock | Series F Preferred Stock Capital in Excess of Par Value | Series F Preferred Stock Cumulative Distributions
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2008 | $ 461,012,000 | $ 457,878,000 | $ 189,560,000 | $ 231,000 | $ 321,979,000 | $ 533,565,000 | $ 735,000 | $ (588,192,000) | $ 3,134,000 |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Dec. 31, 2008 |  |  | 8,042,000 | 23,136,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of 8.5% Series E Preferred Stock |  |  |  |  | 22,000 |  |  |  |  |  |  | (22,000) |  |  |  |  |  |  |
Conversion of 8.5% Series E Preferred Stock (in shares) |  |  |  | 2,000 |  |  |  |  |  |  |  | (1,000) |  |  |  |  |  |  |
Reclassification adjustment | (345,000) | (345,000) |  |  |  |  | (345,000) |  |  |  |  |  |  |  |  |  |  |  |
Stock option exercises | 770,000 | 770,000 |  |  | 770,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock option exercises (in shares) |  |  |  | 35,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of stock | (2,016,000) | (2,016,000) | (2,737,000) |  | 95,000 |  |  | 626,000 |  |  |  |  |  |  |  |  |  |  |
Repurchase of stock (in shares) |  |  | (109,484) | (1,000) |  |  |  |  |  |  |  |  |  |  | (109,484) |  |  |  |
Issue common stock | 766,000 | 766,000 |  |  | 766,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue common stock (in shares) |  |  |  | 30,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue restricted stock | 1,000 |  |  | 1,000 | (1,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue restricted stock (in shares) |  |  |  | 43,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 44,360,000 | 44,064,000 |  |  |  | 44,064,000 |  |  | 296,000 |  |  |  |  |  |  |  |  |  |
Vested stock options | 147,000 | 147,000 |  |  | 147,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested restricted stock | 1,242,000 | 1,242,000 |  |  | 1,242,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-controlling interests conversion |  | 1,144,000 |  | 1,000 | 1,143,000 |  |  |  | (1,144,000) |  |  |  |  |  |  |  |  |  |
Non-controlling interests conversion (in shares) | 67,294 |  |  | 67,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-controlling interests preferred return | (305,000) |  |  |  |  |  |  |  | (305,000) |  |  |  |  |  |  |  |  |  |
Preferred stock dividends | (15,141,000) | (15,141,000) |  |  |  |  |  | (15,141,000) |  |  |  |  |  |  |  |  |  |  |
Common stock cash distributions ($1.68, $1.58 and $1.56 per share for the year ended 2011, 2010 and 2009, respectively) | (36,177,000) | (36,177,000) |  |  |  |  |  | (36,177,000) |  |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2009 | 454,313,000 | 452,332,000 | 186,801,000 | 233,000 | 326,163,000 | 577,629,000 | 390,000 | (638,884,000) | 1,981,000 |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Dec. 31, 2009 |  |  | 7,932,000 | 23,312,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of 8.5% Series E Preferred Stock |  |  |  | 1,000 | 822,000 |  |  |  |  |  |  | (823,000) |  |  |  |  |  |  |
Conversion of 8.5% Series E Preferred Stock (in shares) |  |  |  | 65,790 |  |  |  |  |  |  |  | (32,895) |  |  |  |  |  |  |
Redemption of preferred stock, partial and full | (59,065,000) | (58,942,000) |  |  | 2,383,000 |  |  |  |  | (123,000) | (123,000) | (123,000) | 6,000 | (6,000) | (58,942,000) | (58,942,000) | (58,942,000) | 2,377,000 | (2,377,000)
Redemption of preferred stock, partial and full (in shares) |  |  |  |  |  |  |  |  |  | (4,921) |  | (4,921) |  |  | 2,357,686 |  | 2,357,686 |  |
Reclassification adjustment | (126,000) | (126,000) |  |  |  |  | (126,000) |  |  |  |  |  |  |  |  |  |  |  |
Stock option exercises | 182,000 | 182,000 |  |  | 182,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock option exercises (in shares) |  |  |  | 11,666 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue common stock | 67,793,000 | 67,793,000 |  | 27,000 | 67,766,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue common stock (in shares) |  |  |  | 2,746,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue restricted stock | 2,000 |  |  | 2,000 | (2,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue restricted stock (in shares) |  |  |  | 208,591 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 46,053,000 | 45,862,000 |  |  |  | 45,862,000 |  |  | 191,000 |  |  |  |  |  |  |  |  |  |
Vested stock options | 75,000 | 75,000 |  |  | 75,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested restricted stock | 1,210,000 | 1,210,000 |  |  | 1,210,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-controlling interests preferred return | (210,000) |  |  |  |  |  |  |  | (210,000) |  |  |  |  |  |  |  |  |  |
Preferred stock dividends | (13,662,000) | (13,662,000) |  |  |  |  |  | (13,662,000) |  |  |  |  |  |  |  |  |  |  |
Common stock cash distributions ($1.68, $1.58 and $1.56 per share for the year ended 2011, 2010 and 2009, respectively) | (39,041,000) | (39,041,000) |  |  |  |  |  | (39,041,000) |  |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2010 | 457,522,000 | 455,560,000 | 126,913,000 | 263,000 | 398,599,000 | 623,491,000 | 264,000 | (693,970,000) | 1,962,000 |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Dec. 31, 2010 |  |  | 5,536,530 | 26,345,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption of preferred stock, partial and full | (88,413,000) | (88,413,000) |  |  | 3,566,000 |  |  | (3,566,000) |  |  |  |  |  |  | (88,413,000) |  | (88,413,000) |  |
Redemption of preferred stock, partial and full (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,536,530 |  | 3,536,530 |  |
Reclassification adjustment | (65,000) | (65,000) |  |  |  |  | (65,000) |  |  |  |  |  |  |  |  |  |  |  |
Stock option exercises | 120,000 | 120,000 |  |  | 120,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock option exercises (in shares) |  |  |  | 5,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue common stock | 103,631,000 | 103,631,000 |  | 40,000 | 103,591,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue common stock (in shares) |  |  |  | 3,990,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue restricted stock |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue restricted stock (in shares) |  |  |  | 6,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 49,443,000 | 49,252,000 |  |  |  | 49,252,000 |  |  | 191,000 |  |  |  |  |  |  |  |  |  |
Vested stock options | 17,000 | 17,000 |  |  | 17,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested restricted stock | 1,450,000 | 1,450,000 |  |  | 1,450,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-controlling interests preferred return | (191,000) |  |  |  |  |  |  | 0 | (191,000) |  |  |  |  |  |  |  |  |  |
Preferred stock dividends | (5,512,000) | (5,512,000) |  |  |  |  |  | (5,512,000) |  |  |  |  |  |  |  |  |  |  |
Common stock cash distributions ($1.68, $1.58 and $1.56 per share for the year ended 2011, 2010 and 2009, respectively) | (49,292,000) | (49,292,000) |  |  |  |  |  | (49,292,000) |  |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2011 | $ 468,710,000 | $ 466,748,000 | $ 38,500,000 | $ 303,000 | $ 507,343,000 | $ 672,743,000 | $ 199,000 | $ (752,340,000) | $ 1,962,000 |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Dec. 31, 2011 |  |  | 2,000,000 | 30,346,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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