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Earnings Per Share (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2012 | Mar. 31, 2011 | Dec. 31, 2011
Income (Numerator) [Abstract] |  |  |
Net income as reported | $ 2,913,000 | $ 3,143,000 |
Less dividends and amortization of premium on preferred stock | 181,000 | 337,000 |
Basic EPS: Income available to common shareholders | 2,732,000 | 2,806,000 |
Diluted EPS: Income available to common shareholders plus assumed conversions | $ 2,732,000 | $ 2,806,000 |
Shares (Denominator) [Abstract] |  |  |
Weighted average number of common shares outstanding | 9,817,029 | 9,778,756 |
Incremental shares | 11,196 | 8,527 |
Diluted EPS: Income available to common shareholders plus assumed conversions (in shares) | 9,828,225 | 9,787,283 |
Per-Share Amount [Abstract] |  |  |
Basic EPS: Income available to common shareholders (in dollars per share) | $ 0.28 | $ 0.29 |
Diluted EPS: Income available to common shareholders plus assumed conversions (in dollars per share) | $ 0.28 | $ 0.29 |
Schedule of Outstanding Options And Warrants [Line Items] |  |  |
Incentive stock options (in shares) | 42,000 | 13,500 | 51,000
Warrants issued to U.S. Treasury (in shares) | 225,904 | 225,904 |
Total dilutive securities (in shares) | 0 | 281,404 |

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