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Parent Statements of Financial Condition (Details) (USD $) | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | --- | --- | ---
Assets |  |  |  |
Cash on hand and in banks | $ 109,995,000 | $ 123,270,000 |  |
Interest bearing cash deposits | 35,135,000 | 63,770,000 |  |
Cash and cash equivalents | 155,657,000 | 187,040,000 |  |
Investment securities, available-for-sale | 3,222,829,000 | 3,683,005,000 |  |
Other assets | 55,251,000 | 41,969,000 |  |
Total assets | 7,884,350,000 | 7,747,440,000 |  |
Liabilities and Stockholders' Equity |  |  |  |
Subordinated debentures | 125,562,000 | 125,418,000 |  |
Other liabilities | 50,103,000 | 55,384,000 |  |
Total liabilities | 6,921,100,000 | 6,846,491,000 |  |
Common stock | 744,000 | 719,000 |  |
Paid-in capital | 690,918,000 | 641,737,000 |  |
Retained earnings | 261,943,000 | 210,531,000 |  |
Accumulated other comprehensive income | 9,645,000 | 47,962,000 |  |
Total stockholders’ equity | 963,250,000 | 900,949,000 | 850,227,000 | 838,204,000
Total liabilities and stockholders’ equity | 7,884,350,000 | 7,747,440,000 |  |
Parent Company |  |  |  |
Assets |  |  |  |
Cash on hand and in banks | 1,582,000 | 2,540,000 |  |
Interest bearing cash deposits | 49,097,000 | 9,887,000 |  |
Cash and cash equivalents | 50,679,000 | 12,427,000 |  |
Investment securities, available-for-sale | 87,000 | 29,457,000 |  |
Other assets | 9,050,000 | 23,221,000 |  |
Investment in subsidiaries | 1,040,104,000 | 972,218,000 |  |
Total assets | 1,099,920,000 | 1,037,323,000 |  |
Liabilities and Stockholders' Equity |  |  |  |
Subordinated debentures | 125,562,000 | 125,418,000 |  |
Other liabilities | 11,108,000 | 10,956,000 |  |
Total liabilities | 136,670,000 | 136,374,000 |  |
Common stock | 744,000 | 719,000 |  |
Paid-in capital | 690,918,000 | 641,737,000 |  |
Retained earnings | 261,943,000 | 210,531,000 |  |
Accumulated other comprehensive income | 9,645,000 | 47,962,000 |  |
Total stockholders’ equity | 963,250,000 | 900,949,000 |  |
Total liabilities and stockholders’ equity | $ 1,099,920,000 | $ 1,037,323,000 |  |

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