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Income (Loss) Per Common Share (Tables) | 6 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Calculation of Net Income (Loss) and Weighted Average Common Shares and Common Equivalent Shares Outstanding for Computation of Loss Per Share | The following table summarizes the calculation of net income (loss) and weighted average common shares and common equivalent shares outstanding for purposes of the computation of loss per share (in thousands, except share and per share data):
|  | Three Months Ended |  |  | Six Months Ended |
|  | March 31, 2019 |  |  | March 31, 2018 |  |  | March 31, 2019 |  |  | March 31, 2018 |
Net income (loss) |  | $ | 707 |  |  | $ | (4,729 | ) |  | $ | (5,146 | ) |  | $ | (14,209 | )
Less: Income (loss) allocable to unvested restricted stock |  |  | (12 | ) |  |  | — |  |  |  | — |  |  |  | — |
Income (loss) attributable to common shareholders for diluted earnings per share |  | $ | 695 |  |  | $ | (4,729 | ) |  | $ | (5,146 | ) |  | $ | (14,209 | )
Weighted average number of common share equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common shares used in basic income (loss) per share |  |  | 13,401,135 |  |  |  | 13,264,710 |  |  |  | 13,369,932 |  |  |  | 13,233,205 |
Common share equivalents outstanding related to stock options and RSUs |  |  | 156,050 |  |  |  | — |  |  |  | — |  |  |  | — |
Total weighted average common shares and common share equivalents used in diluted income (loss) per share |  |  | 13,557,185 |  |  |  | 13,264,710 |  |  |  | 13,369,932 |  |  |  | 13,233,205 |
Income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.05 |  |  | $ | (0.36 | ) |  | $ | (0.38 | ) |  | $ | (1.07 | )
Diluted |  | $ | 0.05 |  |  | $ | (0.36 | ) |  | $ | (0.38 | ) |  | $ | (1.07 | )

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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