Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Operations (Unaudited)

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Condensed Consolidated Statements of Operations (Unaudited) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Condensed Consolidated Statements of Operations [Abstract]        
Revenues $ 1,516,696 $ 1,010,914 $ 2,941,873 $ 1,859,873
Cost of services (including depreciation) 1,281,289 856,824 2,510,951 1,634,892
Gross profit 235,407 154,090 430,922 224,981
Selling, general and administrative expenses 114,711 89,489 221,357 181,030
Amortization of intangible assets 9,549 6,871 18,943 13,137
Operating income 111,147 57,730 190,622 30,814
Interest expense (959) (255) (1,543) (510)
Interest income 387 249 795 535
Other income (expense), net (310) 199 (145) 134
Income before income taxes 110,265 57,923 189,729 30,973
Provision for income taxes 40,468 23,610 69,938 12,965
Net income 69,797 34,313 119,791 18,008
Less: Net income attributable to noncontrolling interests 4,259 2,512 8,546 3,801
Net income attributable to common stock $ 65,538 $ 31,801 $ 111,245 $ 14,207
Earnings per share attributable to common stock:        
Basic earnings per share $ 0.31 $ 0.15 $ 0.52 $ 0.07
Diluted earnings per share $ 0.31 $ 0.15 $ 0.52 $ 0.07
Shares used in computing earnings per share:        
Weighted average basic shares outstanding 212,987 214,827 212,244 214,670
Weighted average diluted shares outstanding 213,087 215,023 212,342 215,606