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Earnings Per Share (Tables) | 12 Months Ended
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Sep. 30, 2012
Earnings Per Share [Abstract] |
Earnings per share computations |
Earnings per share |  | Years Ended September 30
(Dollars in thousands, except per share amounts) |  | 2012 |  | 2011 |  | 2010
Common shares: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares |  |  |  |  |  |  |  |  |  |  |  |
outstanding during the period - |  |  |  |  |  |  |  |  |  |  |  |
shares used for basic earnings |  |  |  |  |  |  |  |  |  |  |  |
per common share |  |  | 9,360 |  |  |  | 9,284 |  |  |  | 9,182 |
Common shares issuable under share |  |  |  |  |  |  |  |  |  |  |  |
based payment plans which are |  |  |  |  |  |  |  |  |  |  |  |
potentially dilutive |  |  | 114 |  |  |  | 167 |  |  |  | 242 |
Common shares used for diluted |  |  |  |  |  |  |  |  |  |  |  |
earnings per common share |  |  | 9,474 |  |  |  | 9,451 |  |  |  | 9,424 |
Net income |  | $ | 7,808 |  |  |  | 12,211 |  |  |  | 7,371 |
Earnings per common share |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.83 |  |  |  | 1.32 |  |  |  | 0.80 |
Diluted |  | $ | 0.82 |  |  |  | 1.29 |  |  |  | 0.78 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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