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Consolidated Condensed Statements Of Changes In Stockholders' Equity - USD ($) $ in Thousands | Total | Preferred Stock [Member] | Common Stock [Member] | Retained Earnings [Member] | Treasury Stock At Cost [Member] | Accumulated Other Comprehensive Income (loss) [Member]
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2015 |  | $ 0 | $ 303,966 | $ 507,505 | $ (82,473) | $ (15,643)
Net Income | $ 66,133 |  |  | 66,133 |  |
Other comprehensive income, net of tax: |  |  |  |  |  |
Unrealized net holding (loss) gain on securities available-for-sale, net of income taxes | 13,850 |  |  |  |  | 13,850
Dividends on common shares at $2.82 per share |  |  |  | (43,461) |  |
Cash payment for fractional shares in dividend reinvestment plan |  |  | (3) |  |  |
Allocated Share-based Compensation Expense | 1,200 |  | 1,189 |  |  |
Balance at Sep. 30, 2016 |  | 0 | 305,152 | 530,177 | (82,473) | (1,793)
Balance at Dec. 31, 2016 | 742,240 | 0 | 305,826 | 535,631 | (81,472) | (17,745)
Net Income | 61,411 |  |  | 61,411 |  |
Other comprehensive income, net of tax: |  |  |  |  |  |
Unrealized net holding (loss) gain on securities available-for-sale, net of income taxes | 4,740 |  |  |  |  | 4,740
Dividends on common shares at $2.82 per share |  |  |  | (43,411) |  |
Cash payment for fractional shares in dividend reinvestment plan |  |  | (4) |  |  |
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures |  |  | (795) | (197) | (645) |
Allocated Share-based Compensation Expense | 2,116 |  | 2,116 |  |  |
Treasury Stock, Value, Acquired, Cost Method | (7,378) |  |  |  |  |
Balance at Sep. 30, 2017 | $ 759,367 | $ 0 | $ 307,143 | $ 553,434 | $ (88,205) | $ (13,005)

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