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Earnings Per Share | 12 Months Ended
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Sep. 30, 2020
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per ShareWe compute basic earnings per share by dividing net income (loss) by the weighted average number of common shares outstanding during the period. Diluted earnings per common and potential common share includes the weighted average of additional shares associated with the incremental effect of dilutive restricted stock and restricted stock units, as prescribed by the FASB guidance on earnings per share. The following table reconciles basic and diluted weighted average shares used in the computation of earnings per share (in thousands, except per share data):
| Year Ended September 30,
| 2020 |  | 2019 |  | 2018
Numerator: |  |  |  |  |
Net income (loss) | $ | 16,660 |  |  | $ | 9,890 |  |  | $ | (7,152) |
Denominator: |  |  |  |  |
Weighted average basic shares | 11,624 |  |  | 11,571 |  |  | 11,507 |
Dilutive effect of restricted stock units | 69 |  |  | 63 |  |  | — |
Weighted average diluted shares with assumed conversions | 11,693 |  |  | 11,634 |  |  | 11,507 |
Earnings (loss) per share: |  |  |  |  |
Basic | $ | 1.43 |  |  | $ | 0.85 |  |  | $ | (0.62) |
Diluted | $ | 1.42 |  |  | $ | 0.85 |  |  | $ | (0.62) |
For the year ended September 30, 2018, we incurred a net loss; therefore, all potential common shares were deemed to be anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257 + Details
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