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Earnings Per Share (Tables) | 6 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Schedule of Calculation of Numerator and Denominator in Earnings Per Share | The following table is a reconciliation of the numerators and denominators in the net income (loss) per common share calculations (in thousands, except per common share data):
| Three months ended March 31, |  | Six months ended March 31,
| 2019 |  | 2018 (as adjusted)* |  | 2019 |  | 2018 (as adjusted)*
Numerator: |  |  |  |  |  |  |
Net income (loss) | $ | 1,342 |  |  | $ | (126 | ) |  | $ | 6,024 |  |  | $ | (4,613 | )
Denominator: |  |  |  |  |  |  |
Denominator for basic net income (loss) per common share — weighted average shares outstanding | 27,866 |  |  | 27,084 |  |  | 27,687 |  |  | 26,914 |
Effect of dilutive securities: |  |  |  |  |  |  |
Stock options and restricted stock units | 572 |  |  | — |  |  | 602 |  |  | — |
Denominator for diluted net income (loss) per common share — adjusted weighted average shares | 28,438 |  |  | 27,084 |  |  | 28,289 |  |  | 26,914 |
Net income (loss) per common share, basic | $ | 0.05 |  |  | $ | — |  |  | $ | 0.22 |  |  | $ | (0.17 | )
Net income (loss) per common share, diluted | $ | 0.05 |  |  | $ | — |  |  | $ | 0.21 |  |  | $ | (0.17 | )
*Prior period information has been restated for the adoption of ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” which we adopted on October 1, 2018.

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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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