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CONSOLIDATED STATEMENTS OF OPERATIONS & COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 28, 2013 | Jun. 29, 2012 | Jun. 28, 2013 | Jun. 29, 2012
Revenue from services | $ 422,310 |  | $ 354,261 |  | $ 768,809 |  | $ 665,448 |
Cost of services | 310,437 |  | 260,725 |  | 570,296 |  | 492,677 |
Gross profit | 111,873 |  | 93,536 |  | 198,513 |  | 172,771 |
Selling, general and administrative expenses | 89,339 |  | 71,526 |  | 177,771 |  | 143,610 |
Depreciation and amortization | 5,203 |  | 4,729 |  | 10,362 |  | 9,496 |
Income from operations | 17,331 |  | 17,281 |  | 10,380 |  | 19,665 |
Interest expense | (336) |  | (244) |  | (569) |  | (635) |
Interest and other income | 611 |  | 656 |  | 1,321 |  | 1,312 |
Interest and other income, net | 275 |  | 412 |  | 752 |  | 677 |
Income before tax expense (benefit) | 17,606 |  | 17,693 |  | 11,132 |  | 20,342 |
Income tax expense (benefit) | 5,069 |  | 7,356 |  | (330) |  | 8,475 |
Net income | 12,537 |  | 10,337 |  | 11,462 |  | 11,867 |
Net income per common share: |  |  |  |  |  |  |  |
Basic (in dollars per share) | $ 0.31 |  | $ 0.26 |  | $ 0.29 |  | $ 0.30 |
Diluted (in dollars per share) | $ 0.31 |  | $ 0.26 |  | $ 0.28 |  | $ 0.30 |
Weighted average shares outstanding: |  |  |  |  |  |  |  |
Basic (in shares) | 40,140 |  | 39,701 |  | 39,962 |  | 39,563 |
Diluted (in shares) | 40,421 |  | 40,097 |  | 40,248 |  | 39,993 |
Total other comprehensive loss, net of tax: | (254) | [1] | (394) | [1] | (556) | [1] | (132) | [1]
Comprehensive income | $ 12,283 |  | $ 9,943 |  | $ 10,906 |  | $ 11,735 |
[1] | The tax impact of the components of other comprehensive income were immaterial.

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