v2.4.0.8

Basic and diluted earnings (loss) per share (Tables) | 6 Months Ended
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Jun. 30, 2013
Basic and diluted earnings (loss) 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, |
--- | --- | --- | --- | --- | ---
|  | 2013 |  | 2012 |  | 2013 |  | 2012 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations attributable to Atlantic Power Corporation |  | $ | (2.3 | ) | $ | (24.4 | ) | $ | 3.3 |  | $ | (78.3 | )
Income (loss) from discontinued operations, net of tax |  |  | (0.7 | ) |  | 19.3 |  |  | 0.2 |  |  | 30.9 |
Net income (loss) attributable to Atlantic Power Corporation |  | $ | (3.0 | ) | $ | (5.1 | ) | $ | 3.5 |  | $ | (47.4 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average basic shares outstanding |  |  | 119.9 |  |  | 113.7 |  |  | 119.7 |  |  | 113.6 |
Dilutive potential shares: |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible debentures |  |  | 27.7 |  |  | 13.3 |  |  | 27.7 |  |  | 13.3 |
LTIP notional units |  |  | 0.8 |  |  | 0.5 |  |  | 0.6 |  |  | 0.5 |
Potentially dilutive shares |  |  | 148.4 |  |  | 127.5 |  |  | 148.0 |  |  | 127.4 |
Diluted earnings (loss) per share from continuing operations attributable to Atlantic Power Corporation |  | $ | (0.02 | ) | $ | (0.21 | ) | $ | 0.03 |  | $ | (0.69 | )
Diluted earnings (loss) per share from discontinued operations |  |  | (0.01 | ) |  | 0.17 |  |  | 0.00 |  |  | 0.27 |
Diluted earnings (loss) per share attributable to Atlantic Power Corporation |  | $ | (0.03 | ) | $ | (0.04 | ) | $ | 0.03 |  | $ | (0.42 | )

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- Definition Tabular disclosure of the numerators and the denominators of the basic and diluted per-share (or per-unit) computations for income from continuing operations, including the effect that has been given to preferred dividends. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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