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SELECTED QUARTERLY FINANCIAL DATA (Notes) | 12 Months Ended
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Jan. 01, 2017
Selected Quarterly Financial Information [Abstract] |
Selected Quarterly Financial Data | SELECTED QUARTERLY FINANCIAL DATA (unaudited; in thousands, except per share data)
| First |  | Second |  | Third |  | Fourth
2016 |  |  |  |  |  |  |
Revenue from services | $ | 645,980 |  |  | $ | 672,612 |  |  | $ | 697,097 |  |  | $ | 734,951 |
Cost of services | 495,468 |  |  | 502,688 |  |  | 518,702 |  |  | 554,064 |
Gross profit | 150,512 |  |  | 169,924 |  |  | 178,395 |  |  | 180,887 |
Selling, general and administrative expenses | 130,624 |  |  | 135,787 |  |  | 134,679 |  |  | 145,387 |
Depreciation and amortization | 11,289 |  |  | 11,694 |  |  | 11,690 |  |  | 12,019 |
Goodwill and intangible asset impairment charge | — |  |  | 99,269 |  |  | 4,275 |  |  | — |
Income (loss) from operations | 8,599 |  |  | (76,826 | ) |  | 27,751 |  |  | 23,481 |
Interest expense | (1,969 | ) |  | (1,740 | ) |  | (1,721 | ) |  | (1,736 | )
Interest and other income | 950 |  |  | 853 |  |  | 854 |  |  | 1,164 |
Interest expense, net | (1,019 | ) |  | (887 | ) |  | (867 | ) |  | (572 | )
Income (loss) before tax expense | 7,580 |  |  | (77,713 | ) |  | 26,884 |  |  | 22,909 |
Income tax expense (benefit) | 612 |  |  | (13,978 | ) |  | 3,455 |  |  | 4,822 |
Net income (loss) | $ | 6,968 |  |  | $ | (63,735 | ) |  | $ | 23,429 |  |  | $ | 18,087 |
Net income (loss) per common share: |  |  |  |  |  |  |
Basic | $ | 0.17 |  |  | $ | (1.53 | ) |  | $ | 0.56 |  |  | $ | 0.43 |
Diluted | $ | 0.17 |  |  | $ | (1.53 | ) |  | $ | 0.56 |  |  | $ | 0.43 |
2015 |  |  |  |  |  |  |
Revenue from services | $ | 573,315 |  |  | $ | 627,714 |  |  | $ | 683,918 |  |  | $ | 810,733 |
Cost of services | 443,479 |  |  | 475,748 |  |  | 515,051 |  |  | 625,729 |
Gross profit | 129,836 |  |  | 151,966 |  |  | 168,867 |  |  | 185,004 |
Selling, general and administrative expenses | 111,593 |  |  | 117,859 |  |  | 125,117 |  |  | 141,419 |
Depreciation and amortization | 10,520 |  |  | 10,397 |  |  | 10,498 |  |  | 10,428 |
Income from operations | 7,723 |  |  | 23,710 |  |  | 33,252 |  |  | 33,157 |
Interest expense | (1,166 | ) |  | (881 | ) |  | (933 | ) |  | (1,180 | )
Interest and other income | 632 |  |  | 679 |  |  | 567 |  |  | 887 |
Interest expense, net | (534 | ) |  | (202 | ) |  | (366 | ) |  | (293 | )
Income before tax expense | 7,189 |  |  | 23,508 |  |  | 32,886 |  |  | 32,864 |
Income tax expense | 1,473 |  |  | 6,235 |  |  | 12,796 |  |  | 4,696 |
Net income | $ | 5,716 |  |  | $ | 17,273 |  |  | $ | 20,090 |  |  | $ | 28,168 |
Net income per common share: |  |  |  |  |  |  |
Basic | $ | 0.14 |  |  | $ | 0.42 |  |  | $ | 0.49 |  |  | $ | 0.68 |
Diluted | $ | 0.14 |  |  | $ | 0.42 |  |  | $ | 0.48 |  |  | $ | 0.67 |

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