v3.20.2

Basic and diluted (loss) earnings per share (Tables) | 6 Months Ended
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Jun. 30, 2020
Basic and diluted (loss) earnings per share |
Schedule of diluted net income and potentially dilutive shares utilized in the per share calculation | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
Basic |  | 2020 |  | 2019 |  | 2020 |  | 2019
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net (loss) income attributable to Atlantic Power Corporation | ​ | $ | (5.7) | ​ | $ | 1.2 | ​ | $ | 23.8 | ​ | $ | 10.1
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average basic shares outstanding | ​ |  | 97.6 | ​ |  | 109.7 | ​ |  | 102.4 | ​ |  | 109.3
Basic (loss) earnings per share attributable to Atlantic Power Corporation | ​ | $ | (0.06) | ​ | $ | 0.01 | ​ | $ | 0.23 | ​ | $ | 0.09
Diluted |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net (loss) income attributable to Atlantic Power Corporation | ​ | $ | (5.7) | ​ | $ | 1.2 | ​ | $ | 23.8 | ​ | $ | 10.1
Add: convertible debenture interest expense | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1.9 | ​ | ​ | 2.2
​ | ​ | ​ | (5.7) | ​ | ​ | 1.2 | ​ | ​ | 25.7 | ​ | ​ | 12.3
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average basic shares outstanding | ​ |  | 97.6 | ​ |  | 109.7 | ​ |  | 102.4 | ​ |  | 109.3
Share-based compensation | ​ |  | — | ​ |  | 0.5 | ​ |  | 0.5 | ​ |  | 0.5
Convertible debentures | ​ |  | — | ​ |  | — | ​ |  | 27.4 | ​ |  | 28.2
​ | ​ |  | 97.6 | ​ |  | 110.2 | ​ |  | 130.3 | ​ |  | 138.0
Diluted (loss) earnings per share attributable to Atlantic Power Corporation | ​ | $ | (0.06) | ​ | $ | 0.01 | ​ | $ | 0.20 | ​ | $ | 0.09
Summary of outstanding instruments that are anti-dilutive and not included in the computation of our diluted (loss) earnings per share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
​ |  | 2020 |  | 2019 | ​ | 2020 |  | 2019
Share-based compensation | ​ | ​ | 0.5 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Convertible debentures | ​ | ​ | 27.4 | ​ | ​ | 27.4 | ​ | ​ | — | ​ | ​ | —
Total | ​ | ​ | 27.9 | ​ | ​ | 27.4 | ​ | ​ | — | ​ | ​ | —

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + 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 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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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