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EARNINGS PER-SHARE | 6 Months Ended
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Jun. 30, 2018
EARNINGS PER-SHARE |
EARNINGS PER-SHARE | 9. EARNINGS PER-SHARE The number of shares used to compute basic and diluted earnings per-share for the three and six months ended June 30, 2018 and 2017, were as follows:
|  | Three Months Ended June 30, 2018 |  | Six Months Ended June 30, 2018 |
|  |  |  |  | Weighted |  | Per |  |  |  |  | Weighted |  | Per |
|  |  |  |  | Average |  | Common |  |  |  |  | Average |  | Common |
|  | Net |  | Common |  | Share |  | Net |  | Common |  | Share |
(In millions, except per-share amounts) |  | Income |  | Shares |  | Amount |  | Income |  | Shares |  | Amount |
Basic: |  | $ | 32.6 |  | 42.7 |  | $ | 0.76 |  | $ | 46.8 |  | 42.6 |  | $ | 1.10 |
Effect of Dilutive Securities: |  |  |  |  | 0.3 |  |  | — |  |  |  |  | 0.3 |  |  | (0.01) |
Diluted: |  | $ | 32.6 |  | 43.0 |  | $ | 0.76 |  | $ | 46.8 |  | 42.9 |  | $ | 1.09 |
|  | Three Months Ended June 30, 2017 |  | Six Months Ended June 30, 2017 |
|  |  |  |  | Weighted |  | Per |  |  |  |  | Weighted |  | Per |
|  |  |  |  | Average |  | Common |  |  |  |  | Average |  | Common |
|  | Net |  | Common |  | Share |  | Net |  | Common |  | Share |
(In millions, except per-share amounts) |  | Income |  | Shares |  | Amount |  | Income |  | Shares |  | Amount |
Basic: |  | $ | 24.0 |  | 43.1 |  | $ | 0.56 |  | $ | 31.0 |  | 43.1 |  | $ | 0.72 |
Effect of Dilutive Securities: |  |  |  |  | 0.2 |  |  | (0.01) |  |  |  |  | 0.2 |  |  | — |
Diluted: |  | $ | 24.0 |  | 43.3 |  | $ | 0.55 |  | $ | 31.0 |  | 43.3 |  | $ | 0.72 |
Basic earnings per-share is determined by dividing net income by the weighted-average common shares outstanding during the period. The calculation of diluted earnings per-share includes the dilutive effect of unexercised non-qualified stock options and non-vested restricted stock units. The computation of weighted-average dilutive shares outstanding excludes certain non-qualified stock options to purchase shares of common stock where the options’ exercise prices were greater than the average market price of the Company’s common stock for the periods presented and, therefore, the effect would be anti-dilutive. The number of such shares excluded was nominal.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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