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Condensed Consolidated Statement of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified | Total | Preferred Shares [Member] | Common Shares [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Treasury Shares [Member]
--- | --- | --- | --- | --- | --- | ---
Stockholders' Equity, Beginning Balance at Dec. 31, 2013 | $ 492,803 | $ 48,163 | $ 271 | $ 236,060 | $ 262,625 | $ (54,316)
Shares Outstanding, Beginning Balance at Dec. 31, 2013 |  | 2,000 | 24,357,943 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 26,186 |  |  |  | 26,186 |
Dividends, Preferred Stock | (2,438) |  |  |  | (2,438) |
Stock options exercised, shares |  |  | 108,848 |  |  |
Stock options exercised | 1,460 |  |  | (702) |  | 2,162
Stock-based compensation expense | 1,794 |  |  | 1,794 |  |
Deferral of executive and director compensation | 339 |  |  | 339 |  |
Executive and director deferred compensation distributions shares |  |  | 7,348 |  |  |
Executive and director deferred compensation distributions | 0 |  |  | (146) |  | 146
Stockholders' Equity, Ending Balance at Jun. 30, 2014 | $ 520,144 | $ 48,163 | $ 271 | $ 237,345 | $ 286,373 | $ (52,008)
Shares Outstanding, Ending Balance at Jun. 30, 2014 |  | 2,000 | 24,474,139 |  |  |

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