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Earnings Per Share | 3 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Earnings Per Share | 8. 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 March 31,
(in thousands, except market price and earnings per share) | 2019 | 2018
Net income attributable to the Company | $29,190 | $7,662
Weighted average number of shares: |  |
Weighted average number of shares used in |  |
calculating basic net income per share | 32,272 | 32,220
Effect of dilutive stock-based compensation plans: |  |
Stock options | 13 | 16
Weighted average number of shares used in |  |
calculating diluted net income per share | 32,285 | 32,236
Average market price of common stock used |  |
for calculation of dilutive shares | $71.24 | $63.86
Net income attributable to the Company per share: |  |
Basic | $0.90 | $0.24
Diluted | $0.90 | $0.24

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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