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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Schedule Computing Earnings Per Share |
(in thousands, except market price and earnings per share) | 2015 |  | 2014 |  | 2013
Net income attributable to the Company | $57,279 |  | $41,569 |  | $17,517
Weighted average number of shares: |  |  |  |  |
Weighted average number of shares used in |  |  |  |  |
calculating basic net income per share | 31,978 |  | 31,832 |  | 31,649
Effect of dilutive stock-based compensation plans: |  |  |  |  |
Stock options | 58 |  | 99 |  | 129
Long-term incentive plan | 52 |  | 57 |  | 156
Weighted average number of shares used in |  |  |  |  |
calculating diluted net income per share | 32,088 |  | 31,988 |  | 31,934
Average market price of common stock used |  |  |  |  |
for calculation of dilutive shares | $36.68 |  | $36.29 |  | $31.85
Net income per share: |  |  |  |  |
Basic | $1.79 |  | $1.31 |  | $0.55
Diluted | $1.79 |  | $1.30 |  | $0.55

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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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