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Acquisitions (Tables) | 12 Months Ended
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Dec. 31, 2016
Business Combinations [Abstract] |
Business Acquisition, Pro Forma Information | The following unaudited consolidated pro forma results of operations are as following (in thousands except per share amounts):
| Years Ended December 31,
| 2015 |  | 2014
Revenue | $ | 541,387 |  |  | $ | 536,867 |
Income from continuing operations | $ | 25,267 |  |  | $ | 26,040 |
Basic earnings per share | $ | 2.35 |  |  | $ | 2.43 |
Diluted earnings per share | $ | 2.34 |  |  | $ | 2.42 |

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- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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