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Equity - Rollforward (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Equity activity |  |  |  |
Beginning balance |  |  | $ 660,121 |
Net income | $ 19,647 | $ 17,122 | 55,127 | $ 52,399
Vesting of stock option and restricted common stock |  |  | 3,093 | 2,326
Stock option exercise |  |  | 79 |
Reclassification adjustment | (9) | $ (9) | (26) | $ (27)
Preferred stock dividends |  |  | (2,454) |
Common stock dividends |  |  | (54,388) |
Other |  |  | (346) |
Ending balance | $ 661,206 |  | $ 661,206 |

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