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Consolidated Statements Of Comprehensive Income (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
Income Statement [Abstract] |  |  |  |  |
Revenues | $ 320,099 | $ 298,549 | $ 951,559 |  | $ 846,057
Operating costs and expenses: |  |  |  |  |
Costs of services provided | 315,757 | 255,964 | 858,943 |  | 725,757
Selling, general and administrative | 39,375 | 22,576 | 83,661 |  | 62,729
Other income (expense): |  |  |  |  |
Investment and interest | (50) | 1,184 | 1,134 |  | 2,437
Income (loss) before income taxes | (35,083) | 21,193 | 10,089 |  | 60,008
Income tax provision (benefit) | (12,901) | 7,403 | 3,711 |  | 18,331
Net income (loss) | (22,182) | 13,790 | 6,378 |  | 41,677
Per share data: |  |  |  |  |
Basic earnings (loss) per common share (dollars per share) | $ (0.31) | $ 0.20 | $ 0.09 |  | $ 0.60
Diluted earnings (loss) per common share (dollars per share) | $ (0.31) | $ 0.20 | $ 0.09 |  | $ 0.60
Weighted average number of common shares outstanding: |  |  |  |  |
Basic (shares) | 70,671 | 69,706 | 70,479 |  | 68,926
Diluted (shares) | 70,671 | 70,531 | 71,213 |  | 69,758
Comprehensive income: |  |  |  |  |
Net income (loss) | (22,182) | 13,790 | 6,378 |  | 41,677
Other comprehensive income (loss): |  |  |  |  |
Unrealized gain/(loss) on available for sale marketable securities, net of taxes | (4) | (1) | 3 | [1] | (84)
Total comprehensive income (loss) | $ (22,186) | $ 13,789 | $ 6,381 |  | $ 41,593
[1] | All amounts are net of tax.

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