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Earnings per Share (Tables) | 6 Months Ended
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Mar. 31, 2023
Earnings Per Share [Abstract] |
Reconciliation of Weighted Average Common Shares Outstanding for Purposes of Calculating Basic and Diluted Earnings Per Share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Six Months Ended | ​
​ | ​ | March 31, | ​ | March 31, | ​
​ |  | 2023 |  | 2022 |  | 2023 |  | 2022 |
Income (loss) from continuing operations | ​ | $ | (1,991) | ​ | $ | (1,816) | ​ | $ | (13,226) | ​ | $ | 1,041 | ​
Income (loss) from discontinued operations, net of tax | ​ |  | (2,936) | ​ |  | 2,121,690 | ​ |  | (2,936) | ​ |  | 2,162,152 | ​
Net income (loss) | ​ | $ | (4,927) | ​ | $ | 2,119,874 | ​ | $ | (16,162) | ​ | $ | 2,163,193 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average common shares outstanding used in computing basic income (loss) per share | ​ |  | 69,111 | ​ |  | 74,958 | ​ |  | 70,858 | ​ |  | 74,823 | ​
Dilutive restricted stock units | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 322 | ​
Weighted average common shares outstanding used in computing diluted income (loss) per share | ​ |  | 69,111 | ​ |  | 74,958 | ​ |  | 70,858 | ​ |  | 75,145 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic net income (loss) per share: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​
Income (loss) from continuing operations | ​ | $ | (0.03) | ​ | $ | (0.02) | ​ | $ | (0.19) | ​ | $ | 0.01 | ​
Income (loss) from discontinued operations, net of tax | ​ |  | (0.04) | ​ |  | 28.31 | ​ |  | (0.04) | ​ |  | 28.90 | ​
Basic net income (loss) per share | ​ | $ | (0.07) | ​ | $ | 28.28 | ​ | $ | (0.23) | ​ | $ | 28.91 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Diluted net income (loss) per share: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​
Income (loss) from continuing operations | ​ | $ | (0.03) | ​ | $ | (0.02) | ​ | $ | (0.19) | ​ | $ | 0.01 | ​
Income (loss) from discontinued operations, net of tax | ​ |  | (0.04) | ​ |  | 28.31 | ​ |  | (0.04) | ​ |  | 28.77 | ​
Diluted net income (loss) per share | ​ | $ | (0.07) | ​ | $ | 28.28 | ​ | $ | (0.23) | ​ | $ | 28.79 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
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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://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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