Note 9 - Pro Forma (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue	$ 2,102,459	$ 1,424,809	$ 5,936,256	$ 3,991,066
Income from continuing operations, net of tax	$ 43,293	$ 35,672	$ 134,738	$ 97,903
Basic income per share from continuing operations, net of tax (in dollars per share)	$ 1.65	$ 1.37	$ 5.12	$ 3.76
Diluted income per share from continuing operations, net of tax (in dollars per share)	$ 1.63	$ 1.35	$ 5.08	$ 3.72

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.

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=56956515&loc=d3e1392-128463

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, per diluted share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, for the period as if the business combination or combinations had been completed at the beginning of a period.

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