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Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data | Total | Preferred Stock [Member] | Preferred Stock Discount [Member] | Common Stock [Member] | Common Stock Warrants [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2009 | $ 342,383 | $ 65,000 | $ (3,789) | $ 98,099 | $ 4,592 | $ 182,908 | $ (4,427)
Balance (in shares) at Dec. 31, 2009 |  |  |  | 16,722 |  |  |
Net income | 12,227 |  |  |  |  | 12,227 |
Preferred stock issued | 65,000 |  |  |  |  |  |
Common stock issued under stock option plans | 171 |  |  | 171 |  |  |
Common stock issued under stock option plans (in shares) |  |  |  | 17 |  |  |
Common stock issued into dividend reinvestment plan | 456 |  |  | 456 |  |  |
Common stock issued into dividend reinvestment plan (in shares) |  |  |  | 31 |  |  |
Cash dividends declared | (4,026) |  |  |  |  | (4,026) |
Preferred dividends | (2,438) |  |  |  |  | (2,438) |
Accretion of preferred stock discount | 0 |  | 643 |  |  | (643) |
Tax benefit realized from exercise of nonqualified stock options | 36 |  |  | 36 |  |  |
Stock-based compensation | 541 |  |  | 541 |  |  |
Stock-based compensation (in shares) |  |  |  | 16 |  |  |
Other comprehensive income | 1,605 |  |  |  |  |  | 1,605
Balance at Sep. 30, 2010 | 350,955 | 65,000 | (3,146) | 99,303 | 4,592 | 188,028 | (2,822)
Balance (in shares) at Sep. 30, 2010 | 16,785,750 |  |  | 16,786 |  |  |
Balance at Dec. 31, 2010 | 344,603 | 65,000 | (2,932) | 99,615 | 4,592 | 183,413 | (5,085)
Balance (in shares) at Dec. 31, 2010 | 16,801,426 |  |  | 16,801 |  |  |
Net income | 12,658 |  |  |  |  | 12,658 |
Preferred stock redeemed | (65,000) | (65,000) |  |  |  |  |
Preferred stock issued | 63,500 | 63,500 |  |  |  |  |
Common stock issued under stock option plans | 30 |  |  | 30 |  |  |
Common stock issued under stock option plans (in shares) |  |  |  | 2 |  |  |
Common stock issued into dividend reinvestment plan | 638 |  |  | 638 |  |  |
Common stock issued into dividend reinvestment plan (in shares) |  |  |  | 53 |  |  |
Cash dividends declared | (4,045) |  |  |  |  | (4,045) |
Preferred dividends | (2,440) |  |  |  |  | (2,440) |
Accretion of preferred stock discount | 0 |  | 2,932 |  |  | (2,932) |
Tax benefit realized from exercise of nonqualified stock options | 0 |  |  |  |  |  |
Stock-based compensation | 643 |  |  | 643 |  |  |
Stock-based compensation (in shares) |  |  |  | 29 |  |  |
Other comprehensive income | 1,226 |  |  |  |  |  | 1,226
Balance at Sep. 30, 2011 | $ 351,813 | $ 63,500 | $ 0 | $ 100,926 | $ 4,592 | $ 186,654 | $ (3,859)
Balance (in shares) at Sep. 30, 2011 | 16,884,617 |  |  | 16,885 |  |  |

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