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Earnings per Share (Tables) | 12 Months Ended
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Sep. 30, 2020
Earnings Per Share [Abstract] |
Summary of Calculation of Weighted Average Number of Shares Outstanding Used in Computing Basic and Diluted Net Income (Loss) Per Share | The following table summarizes the computation of basic and diluted earnings per common share under the two-class or as-converted method, as well as the anti-dilutive shares excluded:
|  | Year Ended September 30,
|  | 2020 |  | 2019 |  | 2018
Basic earnings per common share: |  |  |  |  |  |
Net income (loss) |  | $ | 8,008 |  |  | $ | (7,868) |  |  | $ | (32,682) |
Less: Preferred stock dividend declared |  | (5,264) |  |  | (5,250) |  |  | (5,250) |
Income (loss) available for distribution |  | 2,744 |  |  | (13,118) |  |  | (37,932) |
Income allocated to participating securities |  | (1,135) |  |  | — |  |  | — |
Net income (loss) available to common shareholders |  | $ | 1,609 |  |  | $ | (13,118) |  |  | $ | (37,932) |
|  | Year Ended September 30,
|  | 2020 |  | 2019 |  | 2018
Weighted average basic shares outstanding |  | 29,812 |  |  | 25,438 |  |  | 25,115 |
Basic income (loss) per common share |  | $ | 0.05 |  |  | $ | (0.52) |  |  | $ | (1.51) |
Diluted earnings per common share: |  |  |  |  |  |
Method used: |  | Two-class |  | Two-class |  | Two-class
Net income (loss) available to common shareholders |  | $ | 1,609 |  |  | $ | (13,118) |  |  | $ | (37,932) |
Weighted average basic shares outstanding |  | 29,812 |  |  | 25,438 |  |  | 25,115 |
Dilutive effect related to employee stock plans |  | 301 |  |  | — |  |  | — |
Weighted average diluted shares outstanding |  | 30,113 |  |  | 25,438 |  |  | 25,115 |
Diluted income (loss) per common share |  | $ | 0.05 |  |  | $ | (0.52) |  |  | $ | (1.51) |
Anti-dilutive shares excluded: |  |  |  |  |  |
Outstanding stock-based grants |  | 14 |  |  | 733 |  |  | 334 |
Convertible preferred stock |  | 21,021 |  |  | 21,021 |  |  | 21,021 |
Total anti-dilutive shares excluded |  | 21,035 |  |  | 21,754 |  |  | 21,355 |
Dilutive shares under the as-converted method(1) |  | 51,134 |  |  | 46,971 |  |  | 46,382 |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share |
|  | Year Ended September 30,
|  | 2020 |  | 2019 |  | 2018
Basic earnings per common share: |  |  |  |  |  |
Net income (loss) |  | $ | 8,008 |  |  | $ | (7,868) |  |  | $ | (32,682) |
Less: Preferred stock dividend declared |  | (5,264) |  |  | (5,250) |  |  | (5,250) |
Income (loss) available for distribution |  | 2,744 |  |  | (13,118) |  |  | (37,932) |
Income allocated to participating securities |  | (1,135) |  |  | — |  |  | — |
Net income (loss) available to common shareholders |  | $ | 1,609 |  |  | $ | (13,118) |  |  | $ | (37,932) |
|  | Year Ended September 30,
|  | 2020 |  | 2019 |  | 2018
Weighted average basic shares outstanding |  | 29,812 |  |  | 25,438 |  |  | 25,115 |
Basic income (loss) per common share |  | $ | 0.05 |  |  | $ | (0.52) |  |  | $ | (1.51) |
Diluted earnings per common share: |  |  |  |  |  |
Method used: |  | Two-class |  | Two-class |  | Two-class
Net income (loss) available to common shareholders |  | $ | 1,609 |  |  | $ | (13,118) |  |  | $ | (37,932) |
Weighted average basic shares outstanding |  | 29,812 |  |  | 25,438 |  |  | 25,115 |
Dilutive effect related to employee stock plans |  | 301 |  |  | — |  |  | — |
Weighted average diluted shares outstanding |  | 30,113 |  |  | 25,438 |  |  | 25,115 |
Diluted income (loss) per common share |  | $ | 0.05 |  |  | $ | (0.52) |  |  | $ | (1.51) |
Anti-dilutive shares excluded: |  |  |  |  |  |
Outstanding stock-based grants |  | 14 |  |  | 733 |  |  | 334 |
Convertible preferred stock |  | 21,021 |  |  | 21,021 |  |  | 21,021 |
Total anti-dilutive shares excluded |  | 21,035 |  |  | 21,754 |  |  | 21,355 |
Dilutive shares under the as-converted method(1) |  | 51,134 |  |  | 46,971 |  |  | 46,382 |
(1) The dilutive shares under the as-converted method assume conversion of the preferred stock and are presented here merely for reference. In a net income position, diluted earnings per share is determined by the more dilutive of the two-class method or the as-converted method.

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + 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 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + 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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