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UNAUDITED QUARTERLY DATA | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
UNAUDITED QUARTERLY DATA | UNAUDITED QUARTERLY DATA
(in thousands except per share data) | First |  | Second |  | Third |  | Fourth
2017 |  |  |  |  |  |  |  |  |  |  |
Revenues | $ | 375,247 |  |  | $ | 433,555 |  |  | $ | 450,442 |  |  | $ | 414,713 |
Gross profit (Revenues less cost of services provided) | $ | 186,084 |  |  | $ | 229,075 |  |  | $ | 231,661 |  |  | $ | 207,194 |
Net income | $ | 40,270 |  |  | $ | 53,689 |  |  | $ | 51,430 |  |  | $ | 33,735 |
Income per share: |  |  |  |  |  |  |  |  |  |  |
Income per share—Basic | $ | 0.18 |  |  | $ | 0.25 |  |  | $ | 0.24 |  |  | $ | 0.15 |
Income per share—Diluted | $ | 0.18 |  |  | $ | 0.25 |  |  | $ | 0.24 |  |  | $ | 0.15 |
2016 |  |  |  |  |  |  |  |  |  |  |
Revenues | $ | 352,736 |  |  | $ | 411,133 |  |  | $ | 423,994 |  |  | $ | 385,614 |
Gross profit (Revenues less cost of services provided) | $ | 174,934 |  |  | $ | 215,190 |  |  | $ | 218,386 |  |  | $ | 192,619 |
Net income | $ | 31,928 |  |  | $ | 47,783 |  |  | $ | 49,651 |  |  | $ | 38,007 |
Income per share: |  |  |  |  |  |  |  |  |  |  |
Income per share—Basic | $ | 0.15 |  |  | $ | 0.22 |  |  | $ | 0.23 |  |  | $ | 0.17 |
Income per share—Diluted | $ | 0.15 |  |  | $ | 0.22 |  |  | $ | 0.23 |  |  | $ | 0.17 |

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- References No definition available. + Details
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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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