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Earnings per share | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
Earnings per share | Earnings per share Basic earnings per share is computed by dividing net income by the weighted average number of shares of common stock outstanding during the applicable period. Diluted earnings per share is computed by dividing net income by the total of the weighted average number of shares of common stock outstanding during the applicable period, plus the effect of non-vested performance share awards and restricted stock units. Common stock outstanding includes issued shares less shares held in treasury. Net income was the same for both the basic and diluted earnings per share calculations. 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 The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257 + Details
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