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Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss), net [Member] | Treasury Stock [Member]
--- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2014 | $ 716,145 | $ 105,563 | $ 365,615 | $ 353,027 | $ (4,499) | $ (103,561)
Beginning balance, shares at Dec. 31, 2014 |  | 91,723,028 |  |  |  |
Net Income | 27,668 |  |  | 27,668 |  |
Other comprehensive income (loss) | 4,359 |  |  |  | 4,359 |
Dividends, declared (USD per share) | (12,635) |  |  | (12,635) |  |
Treasury stock acquired | (25,383) |  |  |  |  | (25,383)
Treasury stock acquired, shares |  | (2,918,066) |  |  |  |
Restricted stock | 860 | $ 0 | 286 | 0 |  | 574
Restricted stock, shares |  | 134,370 |  |  |  |
Ending balance at Jun. 30, 2015 | 711,206 | $ 105,563 | 365,933 | 368,060 | (140) | (128,210)
Ending balance, shares at Jun. 30, 2015 |  | 88,960,268 |  |  |  |
Stock Issued During Period, Shares, Treasury Stock Reissued |  | 20,936 |  |  |  |
Stock Issued During Period, Value, Treasury Stock Reissued | 192 |  | 32 | 0 |  | 160
Beginning balance at Dec. 31, 2015 | $ 719,546 | $ 105,563 | 365,981 | 378,081 | (2,386) | (127,693)
Beginning balance, shares at Dec. 31, 2015 | 88,961,268 | 88,961,268 |  |  |  |
Net Income | $ 24,480 |  |  | 24,480 |  |
Other comprehensive income (loss) | 10,333 |  |  |  | 10,333 |
Dividends, declared (USD per share) | (12,451) |  |  | (12,451) |  |
Treasury stock acquired | (902) |  |  |  |  | (902)
Treasury stock acquired, shares |  | (97,769) |  |  |  |
Restricted stock | 564 | $ 0 | 161 | 0 |  | 403
Restricted stock, shares |  | 63,348 |  |  |  |
Ending balance at Jun. 30, 2016 | $ 741,786 | $ 105,563 | 366,181 | 390,110 | $ 7,947 | (128,015)
Ending balance, shares at Jun. 30, 2016 | 88,959,315 | 88,949,995 |  |  |  |
Stock Issued During Period, Shares, Treasury Stock Reissued |  | 23,148 |  |  |  |
Stock Issued During Period, Value, Treasury Stock Reissued | $ 216 |  | $ 39 | $ 0 |  | $ 177

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