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Earnings per share (Tables) | 9 Months Ended
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Sep. 30, 2020
Earnings per share |
Schedule of computation of basic and diluted EPS | The following summarizes information related to the computation of basic and diluted EPS: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, |  | Nine Months Ended September 30,
​ |  | 2020 |  | 2019 |  | 2020 |  | 2019
Net income from continuing operations attributable to Consolidated Water Co. Ltd. stockholders | ​ | $ | 1,812,156 | ​ | $ | 2,259,762 | ​ | $ | 7,644,398 | ​ | $ | 8,555,448
Less: preferred stock dividends | ​ |  | (2,810) | ​ |  | (2,869) | ​ |  | (9,099) | ​ |  | (9,068)
Net income from continuing operations available to common shares in the determination of basic earnings per common share | ​ |  | 1,809,346 | ​ |  | 2,256,893 | ​ |  | 7,635,299 | ​ |  | 8,546,380
Total income (loss) from discontinued operations | ​ |  | (377,321) | ​ |  | (532,710) | ​ |  | (4,448,798) | ​ |  | 1,834,297
Net income available to common shares in the determination of basic earnings per common share | ​ | $ | 1,432,025 | ​ | $ | 1,724,183 | ​ | $ | 3,186,501 | ​ | $ | 10,380,677
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders | ​ |  | 15,120,983 | ​ |  | 15,026,710 | ​ |  | 15,116,681 | ​ |  | 15,022,489
Plus: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Weighted average number of preferred shares outstanding during the period | ​ |  | 34,191 | ​ |  | 34,507 | ​ |  | 34,355 | ​ |  | 34,061
Potential dilutive effect of unexercised options and unvested stock grants | ​ |  | 118,355 | ​ |  | 76,877 | ​ |  | 119,458 | ​ |  | 76,293
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders | ​ |  | 15,273,529 | ​ |  | 15,138,094 | ​ |  | 15,270,494 | ​ |  | 15,132,843

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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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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