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Earnings per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 31, 2011
Earnings per Share |  |  |  |
Income from continuing operations | $ 12,947 |  | $ 12,273 |
Less income allocated to non-controlling interests | (11) |  | (48) |
Less income allocated to participating securities |  |  |  |
Non-forfeitable dividends on participating securities | (94) |  | (89) |
Total income allocated to participating securities | (94) |  | (89) |
Less net income allocated to preferred stockholders: |  |  |  |
Preferred stock dividends | (818) |  | (3,058) |
Preferred stock redemption charge |  |  | (3,566) |
Total net income allocated to preferred stockholders | (818) |  | (6,624) |
Income from continuing operations allocable to common stockholders | 12,024 |  | 5,512 |
Discontinued operations: |  |  |  |
Loss from discontinued operations | (31) |  | (119) |
Gain on sale of assets, net | 16 |  |  |
Net loss from discontinued operations | (15) |  | (119) |
Net income available to common stockholders | 12,009 |  | 5,393 |
Net income for diluted net income per share (in dollars per share) | $ 12,009 |  | $ 5,393 |
Shares for basic net income per share | 30,189 |  | 26,310 |
Effect of dilutive securities: |  |  |  |
Stock options (in shares) | 45 |  | 30 |
Shares for diluted net income per share | 30,234 |  | 26,340 |
Basic net income per common share | $ 0.40 | [1] | $ 0.20 | [1]
Diluted net income per common share | $ 0.40 | [1] | $ 0.20 | [1]
[1] | NOTE: Computations of per share amounts from continuing operations, discontinued operations and net income are made independently. Therefore, the sum of per share amounts from continuing operations and discontinued operations may not agree with the per share amounts from net income available to common stockholders.

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