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CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, except Share data, unless otherwise specified | Total | Total Stockholders' Equity | Preferred Stock | Common Stock | Capital in Excess of Par Value | Cumulative Net Income | Accumulated OCI | 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 Common 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, 2009 | $ 454,313 | $ 452,332 | $ 186,801 | $ 233 | $ 326,163 | $ 577,629 | $ 390 | $ (638,884) | $ 1,981 |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  |  |  | (823) | 1 | 822 |  |  |  |  |  |
Conversion of 8.5% Series E Preferred Stock (in shares) |  |  |  |  |  |  |  |  |  |  |  | (33,000) | 66,000 |  |  |  |  |  |  |
Redemption of preferred stock, partial and full |  |  |  |  |  |  |  |  |  | (123) | (123) | (123) |  | 6 | (6) | (58,942) | (58,942) | (58,942) | 2,377 | (2,377)
Redemption of preferred stock, partial and full (in shares) |  |  |  |  |  |  |  |  |  |  |  | (5,000) |  |  |  |  |  | (2,358,000) |  |
Reclassification adjustment | (126) | (126) |  |  |  |  | (126) |  |  |  |  |  |  |  |  |  |  |  |  |
Stock option exercises | 182 | 182 |  |  | 182 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock option exercises (in shares) |  |  |  | 12,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue common stock | 67,793 | 67,793 |  | 27 | 67,766 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue common stock (in shares) |  |  |  | 2,746,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue restricted stock |  |  |  | 2 | (2) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue restricted stock (in shares) |  |  |  | 209,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 46,053 | 45,862 |  |  |  | 45,862 |  |  | 191 |  |  |  |  |  |  |  |  |  |  |
Vested stock options | 75 | 75 |  |  | 75 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested restricted stock | 1,210 | 1,210 |  |  | 1,210 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-controlling interests preferred return | (210) |  |  |  |  |  |  |  | (210) |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividends | (13,662) | (13,662) |  |  |  |  |  | (13,662) |  |  |  |  |  |  |  |  |  |  |  |
Common stock cash distributions ($1.79, $1.68 and $1.58 per share for the year ended 2012, 2011 and 2010, respectively) | (39,041) | (39,041) |  |  |  |  |  | (39,041) |  |  |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2010 | 457,522 | 455,560 | 126,913 | 263 | 398,599 | 623,491 | 264 | (693,970) | 1,962 |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Dec. 31, 2010 |  |  | 5,536,000 | 26,345,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption of preferred stock, partial and full |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (88,413) | (88,413) | (88,413) | 3,566 | (3,566)
Redemption of preferred stock, partial and full (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (3,536,530) |  | (3,536,000) |  |
Reclassification adjustment | (65) | (65) |  |  |  |  | (65) |  |  |  |  |  |  |  |  |  |  |  |  |
Stock option exercises | 120 | 120 |  |  | 120 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock option exercises (in shares) |  |  |  | 5,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue common stock | 103,631 | 103,631 |  | 40 | 103,591 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue common stock (in shares) |  |  |  | 3,990,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue restricted stock (in shares) |  |  |  | 6,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 49,443 | 49,252 |  |  |  | 49,252 |  |  | 191 |  |  |  |  |  |  |  |  |  |  |
Vested stock options | 17 | 17 |  |  | 17 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested restricted stock | 1,450 | 1,450 |  |  | 1,450 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-controlling interests preferred return | (191) |  |  |  |  |  |  |  | (191) |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividends | (5,512) | (5,512) |  |  |  |  |  | (5,512) |  |  |  |  |  |  |  |  |  |  |  |
Common stock cash distributions ($1.79, $1.68 and $1.58 per share for the year ended 2012, 2011 and 2010, respectively) | (49,292) | (49,292) |  |  |  |  |  | (49,292) |  |  |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2011 | 468,710 | 466,748 | 38,500 | 303 | 507,343 | 672,743 | 199 | (752,340) | 1,962 |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Dec. 31, 2011 |  |  | 2,000,000 | 30,346,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification adjustment | (47) | (47) |  |  |  |  | (47) |  |  |  |  |  |  |  |  |  |  |  |  |
Stock option exercises | 1,926 | 1,926 |  | 1 | 1,925 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock option exercises (in shares) | 85,000 |  |  | 85,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue restricted stock |  |  |  | 1 | (1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue restricted stock (in shares) |  |  |  | 90,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 51,327 | 51,290 |  |  |  | 51,290 |  |  | 37 |  |  |  |  |  |  |  |  |  |  |
Vested stock options | 10 | 10 |  |  | 10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested restricted stock | 1,809 | 1,809 |  |  | 1,809 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-controlling interests conversion | (2,764) | (850) |  |  | (850) |  |  |  | (1,914) |  |  |  |  |  |  |  |  |  |  |
Non-controlling interests conversion (in shares) |  |  |  | 23,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-controlling interests preferred return | (78) |  |  |  |  |  |  |  | (78) |  |  |  |  |  |  |  |  |  |  |
Preferred stock dividends | (3,273) | (3,273) |  |  |  |  |  | (3,273) |  |  |  |  |  |  |  |  |  |  |  |
Common stock cash distributions ($1.79, $1.68 and $1.58 per share for the year ended 2012, 2011 and 2010, respectively) | (54,512) | (54,512) |  |  |  |  |  | (54,512) |  |  |  |  |  |  |  |  |  |  |  |
Balance at Dec. 31, 2012 | $ 463,108 | $ 463,101 | $ 38,500 | $ 305 | $ 510,236 | $ 724,033 | $ 152 | $ (810,125) | $ 7 |  |  |  |  |  |  |  |  |  |  |
Balance (in shares) at Dec. 31, 2012 |  |  | 2,000,000 | 30,544,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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