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LOSS PER COMMON SHARE (Tables) | 12 Months Ended
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Sep. 30, 2020
Earnings Per Share [Abstract] |
Reconciliations between net earnings (loss) attributable to stockholders and common shares outstanding of the basic and diluted net earnings (loss) per share computations | Reconciliations between net loss attributable to Barnwell stockholders and common shares outstanding of the basic and diluted net loss per share computations are detailed in the following tables:
| Year ended September 30, 2020
| Net Loss |  | Shares |  | Per-Share
| (Numerator) |  | (Denominator) |  | Amount
Basic net loss per share | $ | (4,756,000) |  |  | 8,277,160 |  |  | $ | (0.57) |
Effect of dilutive securities - common stock options | — |  |  | — |  |  |
Diluted net loss per share | $ | (4,756,000) |  |  | 8,277,160 |  |  | $ | (0.57) |
| Year ended September 30, 2019
| Net Loss |  | Shares |  | Per-Share
| (Numerator) |  | (Denominator) |  | Amount
Basic net loss per share | $ | (12,414,000) |  |  | 8,277,160 |  |  | $ | (1.50) |
Effect of dilutive securities - common stock options | — |  |  | — |  |  |
Diluted net loss per share | $ | (12,414,000) |  |  | 8,277,160 |  |  | $ | (1.50) |

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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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