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Earnings per Share (Tables) | 9 Months Ended
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Jun. 30, 2013
Earnings Per Share [Abstract] |
Earnings per share computations |
| Three Months ended |  | Nine Months ended
| June 30, |  | June 30,
| 2013 |  | 2012 |  | 2013 |  | 2012
Weighted average common shares |  |  |  |  |  |  |
outstanding during the period |  |  |  |  |  |  |
- shares used for basic |  |  |  |  |  |  |
earnings per common share |  | 9,549 |  |  |  | 9,382 |  |  |  | 9,511 |  |  |  | 9,341 |
Common shares issuable under |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
share based payment plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
which are potentially dilutive |  | 76 |  |  |  | 100 |  |  |  | 81 |  |  |  | 117 |
Common shares used for diluted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
earnings per common share |  | 9,625 |  |  |  | 9,482 |  |  |  | 9,592 |  |  |  | 9,458 |
Net income | $ | 3,002 |  |  |  | 2,684 |  |  |  | 8,396 |  |  |  | 6,451 |
Earnings per common share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic | $ | 0.31 |  |  |  | 0.29 |  |  |  | 0.88 |  |  |  | 0.69 |
Diluted | $ | 0.31 |  |  |  | 0.28 |  |  |  | 0.88 |  |  |  | 0.68 |

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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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