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Earnings Per Share (Tables) | 3 Months Ended
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Jun. 30, 2020
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The amounts used in computing earnings per share and the weighted average number of shares of potentially dilutive securities are as follows:
| Three months ended June 30, |  | Six months ended June 30, |
(in thousands, except market price and earnings per share) | 2020 | 2019 | 2020 | 2019
Net income attributable to the Company | $ | 32,354 |  | $ | 34,054 |  | $ | 41,463 |  | $ | 63,244 |
Weighted average number of shares: |  |  |  |
Weighted average number of shares used in calculating basic net income per share | 32,328 |  | 32,299 |  | 32,320 |  | 32,286 |
Effect of dilutive stock-based compensation plans: |  |  |  |
Stock options | 8 |  | 12 |  | 8 |  | 12 |
Weighted average number of shares used in calculating diluted net income per share | 32,336 |  | 32,311 |  | 32,328 |  | 32,298 |
Average market price of common stock used for calculation of dilutive shares | $ | 54.08 |  | $ | 74.86 |  | $ | 59.73 |  | $ | 73.08 |
Net income attributable to the Company per share: |  |  |  |
Basic | $ | 1.00 |  | $ | 1.05 |  | $ | 1.28 |  | $ | 1.96 |
Diluted | $ | 1.00 |  | $ | 1.05 |  | $ | 1.28 |  | $ | 1.96 |

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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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