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Earnings Per Share | 3 Months Ended
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Mar. 31, 2018
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share The following table sets forth the computation of basic and diluted earnings per share for the periods indicated:
(In thousands, except per share amounts) | Three Months Ended March 31,
2018 |  | 2017
Numerator: |  |  |
Net income | $ | 26,136 |  |  | $ | 27,032 |
Denominator: |  |  |
Weighted-average shares outstanding - basic | 18,288 |  |  | 18,056 |
Effect of dilutive shares | 322 |  |  | 317 |
Weighted-average shares outstanding - diluted | 18,610 |  |  | 18,373 |
Basic earnings per share | $ | 1.43 |  |  | $ | 1.50 |
Diluted earnings per share | $ | 1.40 |  |  | $ | 1.47 |
Certain potential options to purchase shares may be excluded from the calculation of diluted weighted-average shares outstanding where their exercise price is greater than the average market price of our capital stock during the relevant reporting period. For the quarters ended March 31, 2018 and March 31, 2017, no shares were excluded.

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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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