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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Computation of basic and diluted earnings per share from continuing operations | The following table sets forth the computation of basic and diluted earnings per share:
| 2017 |  | 2016 |  | 2015
Numerator: |  |  |  |  |
Net income (loss) from continuing operations | $ | 1,341,362 |  |  | $ | (6,993,967 | ) |  | $ | (10,269,278 | )
Net loss from discontinued operations, net of tax | $ | — |  |  | $ | (99,334 | ) |  | $ | (1,251,058 | )
Denominator: |  |  |  |  |  |  |  |
Denominator for basic earnings per share - weighted average shares | 8,704,730 |  |  | 8,649,745 |  |  | 8,710,361 |
Effect of dilutive securities: |  |  |  |  |  |  |  |
Employee stock options and stock grants | 22,757 |  |  | — |  |  | — |
Denominator for diluted earnings per share - weighted average shares | 8,727,487 |  |  | 8,649,745 |  |  | 8,710,361 |
Net earnings (loss) per share from continuing operations: |  |  |  |  |  |  |  |
Basic | $ | 0.15 |  |  | $ | (0.81 | ) |  | $ | (1.18 | )
Diluted | $ | 0.15 |  |  | $ | (0.81 | ) |  | $ | (1.18 | )
Net loss per share from discontinued operations: |  |  |  |  |
Basic | $ | — |  |  | $ | (0.01 | ) |  | $ | (0.14 | )
Diluted | $ | — |  |  | $ | (0.01 | ) |  | $ | (0.14 | )

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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/2003/role/presentationRef -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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