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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2019
Earnings Per Share [Abstract] |
Schedule Computing Earnings Per Share | 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) | 2019 | 2018 | 2019 | 2018
Net income attributable to the Company | $34,054 | $29,902 | $63,244 | $37,564
Weighted average number of shares: |  |  |  |
Weighted average number of shares used in calculating basic net income per share | 32,299 | 32,257 | 32,286 | 32,239
Effect of dilutive stock-based compensation plans: |  |  |  |
Stock options | 12 | 16 | 12 | 16
Weighted average number of shares used in calculating diluted net income per share | 32,311 | 32,273 | 32,298 | 32,255
Average market price of common stock used for calculation of dilutive shares | $74.86 | $61.86 | $73.08 | $62.83
Net income attributable to the Company per share: |  |  |  |
Basic | $1.05 | $0.93 | $1.96 | $1.17
Diluted | $1.05 | $0.93 | $1.96 | $1.16

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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://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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