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Earnings (Loss) Per Share | 6 Months Ended
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Mar. 31, 2018
Earnings Per Share [Abstract] |
Earnings (Loss) Per Share | Earnings (Loss) Per Share Basic earnings per share is calculated by dividing income (loss) available to common shareholders by the weighted average number of common shares outstanding and restricted stock grants that vested or are likely to vest during the period. Diluted earnings per share is calculated by dividing income(loss) available to common shareholders by the weighted average number of basic common shares outstanding, adjusted to reflect potentially dilutive securities. Diluted earnings (loss) per share is calculated using the treasury stock method.
|  | Three Months Ended |  | Six Months Ended
|  | March 31, |  | March 31,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Numerator: |  |  |  |  |  |  |  |
Net income (loss) |  | $ | 1,316 |  |  | $ | 979 |  |  | $ | (1,535 | ) |  | $ | 1,303 |
Denominator: |  |  |  |  |  |  |  |
Denominator for basic net income per share - weighted-average outstanding shares |  | 11,889 |  |  | 11,249 |  |  | 11,863 |  |  | 11,225 |
Effect of dilutive securities: |  |  |  |  |  |  |  |
Stock options and restricted stock |  | 997 |  |  | 1,496 |  |  | — |  |  | 1,488 |
Denominator for diluted net income per share - weighted-average outstanding shares |  | 12,886 |  |  | 12,745 |  |  | 11,863 |  |  | 12,713 |
Net income (loss) per share - basic |  | $ | 0.11 |  |  | $ | 0.09 |  |  | $ | (0.13 | ) |  | $ | 0.12 |
Net income (loss) per share-diluted |  | $ | 0.10 |  |  | $ | 0.08 |  |  | $ | (0.13 | ) |  | $ | 0.10 |

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