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Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | Capital Surplus[Member] | Retained Earnings [Member] | Treasury Stock [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2013 | $ 387,623 | $ 46,249 | $ 107,596 | $ 333,970 | $ (95,202) | $ (4,990)
Net income | 38,432 |  |  | 38,432 |  |
Other comprehensive income (loss) | 2,069 |  |  |  |  | 2,069
Cash dividends declared | (18,681) |  |  | (18,681) |  |
Stock-based compensation expense, net | 1,210 |  | (262) |  | 1,472 |
Exercise of stock options | 553 |  | (272) |  | 825 |
Purchase of treasury shares | (19,533) |  |  |  | (19,533) |
Ending balance at Sep. 30, 2014 | 391,673 | 46,249 | 107,062 | 353,721 | (112,438) | (2,921)
Beginning Balance at Dec. 31, 2014 | 390,853 | 46,249 | 107,370 | 362,211 | (120,818) | (4,159)
Net income | 40,582 |  |  | 40,582 |  |
Other comprehensive income (loss) | 599 |  |  |  |  | 599
Cash dividends declared | (19,242) |  |  | (19,242) |  |
Stock-based compensation expense, net | 1,430 |  | (38) |  | 1,468 |
Exercise of stock options | 2,649 |  | (459) |  | 3,108 |
Exercise of warrants | 1,896 |  | (765) |  | 2,661 |
Ending balance at Sep. 30, 2015 | $ 418,767 | $ 46,249 | $ 106,108 | $ 383,551 | $ (113,581) | $ (3,560)

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