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Business Combinations - Results of Operations (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Weighted average number of shares outstanding: |  |  |  |
Basic | 140,915 | 141,139 | 141,253 | 140,925
Diluted | 142,964 | 142,789 | 143,102 | 142,476
2014 Acquisitions [Member] |  |  |  |
Business Acquisition, Pro Forma Information [Line Items] |  |  |  |
Total revenues | $ 421,433 | $ 400,738 | $ 1,234,451 | $ 1,138,466
Income before income taxes | 112,687 | 109,069 | 318,806 | 320,089
Net income | $ 68,332 | $ 65,985 | $ 193,103 | $ 193,404
Net income per share: |  |  |  |
Basic | $ 0.47 | $ 0.45 | $ 1.33 | $ 1.34
Diluted | $ 0.47 | $ 0.45 | $ 1.32 | $ 1.32
Weighted average number of shares outstanding: |  |  |  |
Basic | 140,915 | 141,139 | 141,253 | 140,925
Diluted | 142,964 | 142,789 | 143,102 | 142,476

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- Definition The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect per basic share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period. + 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=25497992&loc=d3e1392-128463 + Details
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