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Earnings per share attributable to stockholders (Tables) | 9 Months Ended
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Sep. 30, 2022
Earnings per share attributable to stockholders |
Computation of Basic and Diluted Earnings Per Share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Nine months ended
​ | ​ | September 30, 2022 | ​ | September 30, 2022
​ | ​ | Net income | ​ | WA | ​ | Per | ​ | Net income | ​ | WA | ​ | Per
​ |  | attributable to |  | number |  | share | ​ | attributable to |  | number |  | share
​ |  | stockholders |  | of shares |  | amount | ​ | stockholders |  | of shares |  | amount
Basic | ​ | $ | 42,909 |  | 110,838,237 | ​ | $ | 0.39 | ​ | $ | 274,368 |  | 110,750,021 | ​ | $ | 2.48
Effect of dilutive securities: | ​ |  | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ |  | ​ | ​ |  | ​
Share units | ​ |  | — |  | 641,284 | ​ |  | — | ​ |  | — |  | 496,273 | ​ |  | (0.01)
Stock options | ​ |  | — |  | 730,014 | ​ |  | (0.01) | ​ |  | — |  | 611,801 | ​ |  | (0.02)
Diluted | ​ | $ | 42,909 |  | 112,209,535 | ​ | $ | 0.38 | ​ | $ | 274,368 |  | 111,858,095 | ​ | $ | 2.45
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Nine months ended
​ | ​ | September 30, 2021 | ​ | September 30, 2021
​ | ​ | Net income | ​ | WA | ​ | Per | ​ | Net income | ​ | WA | ​ | Per
​ |  | attributable to |  | number |  | share | ​ | attributable to |  | number |  | share
​ |  | stockholders |  | of shares |  | amount |  | stockholders |  | of shares |  | amount
Basic | ​ | $ | 32,336 | ​ | 110,410,172 | ​ | $ | 0.29 | ​ | $ | 121,273 |  | 110,233,851 | ​ | $ | 1.10
Effect of dilutive securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  | ​ |  | ​ | ​ |  | ​
Share units | ​ | ​ | — | ​ | 324,218 | ​ | ​ | — | ​ |  | — |  | 408,574 | ​ |  | —
Stock options | ​ | ​ | — | ​ | 657,006 | ​ | ​ | — | ​ |  | — |  | 690,822 | ​ |  | (0.01)
Diluted | ​ | $ | 32,336 | ​ | 111,391,396 | ​ | $ | 0.29 | ​ | $ | 121,273 |  | 111,333,247 | ​ | $ | 1.09

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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=124432515&loc=d3e3550-109257 + Details
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