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Earnings per share (Tables) | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
Weighted average common shares outstanding | A reconciliation of the weighted average common shares outstanding used in the basic and diluted earnings per share calculations follows:
| Three Months Ended | Nine Months Ended
| September 30, | September 30,
| 2021 | 2020 | 2021 | 2020
| (In thousands, except per share amounts)
Weighted average common shares outstanding - basic | 202,863 |  | 200,522 |  | 201,647 |  | 200,495 |
Effect of dilutive performance share awards and restricted stock units | 327 |  | 97 |  | 308 |  | 20 |
Weighted average common shares outstanding - diluted | 203,190 |  | 200,619 |  | 201,955 |  | 200,515 |
Shares excluded from the calculation of diluted earnings per share | — |  | 87 |  | — |  | 139 |
Dividends declared per common share | $ | .2125 |  | $ | .2075 |  | $ | .6375 |  | $ | .6225 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + 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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