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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Income Statement [Abstract] |  |  |
Revenues | $ 1,177,515 | $ 547,639 | $ 401,320
Cost of services | 808,979 | 359,811 | 261,989
Gross profit | 368,536 | 187,828 | 139,331
Selling, general and administrative expenses | 265,568 | 145,399 | 120,995
Amortization of intangible assets | 18,016 | 2,346 | 2,115
Operating income | 84,952 | 40,083 | 16,221
Interest expense, net | (17,168) | (2,936) | (8,168)
Income before income taxes | 67,784 | 37,147 | 8,053
Provision for income taxes | 29,373 | 15,397 | 3,969
Income from continuing operations | 38,411 | 21,750 | 4,084
Income (loss) from discontinued operations, net of income taxes | 4,242 | 2,547 | (13,981)
Net income (loss) | 42,653 | 24,297 | (9,897)
Basic earnings per common share: |  |  |
Income from continuing operations | $ 0.82 | $ 0.59 | $ 0.11
Income from discontinued operations | $ 0.09 | $ 0.07 | $ (0.38)
Net income | $ 0.91 | $ 0.66 | $ (0.27)
Diluted earnings per common share: |  |  |
Income from continuing operations | $ 0.80 | $ 0.58 | $ 0.11
Income from discontinued operations | $ 0.09 | $ 0.06 | $ (0.38)
Net income | $ 0.89 | $ 0.64 | $ (0.27)
Number of shares and share equivalents used to calculate earnings (loss) per share: |  |  |
Basic (in shares) | 46,739 | 36,876 | 36,429
Diluted (in shares) | 47,826 | 37,758 | 37,050
Reconciliation of net income (loss) to comprehensive income (loss): |  |  |
Net income (loss) | 42,653 | 24,297 | (9,897)
Changes in fair value of derivative, net of income tax of $21 and $227, respectively | (21) | (380) | 0
Foreign currency translation adjustment | 854 | (1,662) | (1,122)
Comprehensive income (loss) | $ 43,486 | $ 22,255 | $ (11,019)

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