v3.8.0.1

Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Earnings Per Share | The following table sets forth certain components of the computation of basic and diluted earnings per share for the years ended December 31:
In Thousands | 2017 |  | 2016 |  | 2015
Numerator: |  |  |  |  |
Net income | $ | 67,017 |  |  | $ | 33,839 |  |  | $ | 47,605 |
Denominator: |  |  |  |  |
Denominator for basic earnings per share – weighted average shares | 20,767 |  |  | 20,704 |  |  | 20,713 |
Effect of dilutive securities: |  |  |  |  |
Employee stock options | 80 |  |  | 69 |  |  | 74 |
Denominator for diluted earnings per share – weighted average shares | 20,847 |  |  | 20,773 |  |  | 20,787 |
Anti-dilutive Excluded from Diluted Earnings Per Share | Stock options to purchase common stock at exercise prices in excess of the average actual stock price for the period that were anti-dilutive and that were excluded from the determination of diluted earnings per share are as follows:
In Thousands, Except Per Share Data | 2017 |  | 2016 |  | 2015
Weighted average anti-dilutive stock options | 125 |  |  | 143 |  |  | 96 |
Weighted average exercise price per share | $ | 45.74 |  |  | $ | 40.39 |  |  | $ | 43.43 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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/2003/role/presentationRef -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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