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Earnings per Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table sets forth the weighted-average shares used in calculating the earnings per share for the months ended June 30, 2018 and 2017.
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Basic weighted-average shares | 24,170,000 |  |  | 23,738,000 |  |  | 24,158,000 |  |  | 23,606,000 |
Conversion of unsecured loan notes | — |  |  | — |  |  | — |  |  | — |
Unexercised options and unvested RSUs | — |  |  | — |  |  | — |  |  | — |
Diluted weighted-average shares | 24,170,000 |  |  | 23,738,000 |  |  | 24,158,000 |  |  | 23,606,000 |

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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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