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Equity (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Equity activity |  |  |  |
Beginning balance |  |  | $ 660,121 |
Net income | $ 17,928 | $ 18,273 | 35,480 | $ 35,277
Vesting of stock option and restricted common stock |  |  | 2,081 | 1,449
Stock option exercise |  |  | 79 |
Reclassification adjustment | (8) | $ (9) | (17) | $ (18)
Preferred stock dividends |  |  | (1,636) |
Common stock dividends |  |  | (36,247) |
Other |  |  | (339) |
Ending balance | $ 659,522 |  | $ 659,522 |

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