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Earnings/(loss) per share (Tables) | 12 Months Ended
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Dec. 31, 2019
Earnings Per Share [Abstract] |
Basic and Diluted Earnings Per Share Calculation | The Company calculates basic and diluted earnings per share as follows:
|  | Year Ended December 31, |
|  | 2017 |  |  | 2018 |  |  | 2019 |
Numerator |  |  |  |  |  |  |  |  |  |  |  |
Net (loss)/income |  |  | (1,218,237 | ) |  |  | (12,276,520 | ) |  |  | 2,093,124 |
Less: Undistributed earnings allocated to non-vested shares |  |  | — |  |  |  | — |  |  |  | (8,922 | )
Net (loss)/income attributable to common shareholders, basic |  |  | (1,218,237 | ) |  |  | (12,276,520 | ) |  |  | 2,084,202 |
Denominator |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of shares outstanding, basic and diluted |  |  | 39,809,364 |  |  |  | 39,860,563 |  |  |  | 39,800,434 |
(Loss)/earnings per share, basic and diluted |  |  | (0.03 | ) |  |  | (0.31 | ) |  |  | 0.05 |

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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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