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SUPPLEMENTARY DATA (UNAUDITED) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
SUPPLEMENTARY DATA (UNAUDITED) | SUPPLEMENTARY DATA (UNAUDITED) Our unaudited results of operations for each of the quarters in the years ended December 31, 2017 and 2016, are summarized below (in thousands, except per share data).
2017 |  | March 31 (a) |  | June 30 |  | September 30 |  | December 31 (b)
Revenues: |  |  |  |  |  |  |  |
Transportation |  | $ | 3,102,043 |  |  | $ | 3,319,995 |  |  | $ | 3,433,701 |  |  | $ | 3,647,167 |
Sourcing |  | 313,082 |  |  | 390,023 |  |  | 350,750 |  |  | 312,619 |
Total revenues |  | 3,415,125 |  |  | 3,710,018 |  |  | 3,784,451 |  |  | 3,959,786 |
Costs and expenses: |  |  |  |  |  |  |  |
Purchased transportation and related services |  | 2,563,885 |  |  | 2,781,355 |  |  | 2,869,616 |  |  | 3,042,434 |
Purchased products sourced for resale |  | 282,674 |  |  | 354,874 |  |  | 320,989 |  |  | 285,503 |
Personnel expenses |  | 290,504 |  |  | 284,220 |  |  | 293,204 |  |  | 311,599 |
Other selling, general, and administrative expenses |  | 90,104 |  |  | 107,749 |  |  | 106,177 |  |  | 109,374 |
Total costs and expenses |  | 3,227,167 |  |  | 3,528,198 |  |  | 3,589,986 |  |  | 3,748,910 |
Income from operations |  | 187,958 |  |  | 181,820 |  |  | 194,465 |  |  | 210,876 |
Net income |  | $ | 122,080 |  |  | $ | 111,071 |  |  | $ | 119,186 |  |  | $ | 152,556 |
Basic net income per share |  | $ | 0.86 |  |  | $ | 0.79 |  |  | $ | 0.85 |  |  | $ | 1.09 |
Diluted net income per share |  | $ | 0.86 |  |  | $ | 0.78 |  |  | $ | 0.85 |  |  | $ | 1.08 |
Basic weighted average shares outstanding |  | 141,484 |  |  | 141,061 |  |  | 140,422 |  |  | 139,572 |
Dilutive effect of outstanding stock awards |  | 374 |  |  | 526 |  |  | 600 |  |  | 1,152 |
Diluted weighted average shares outstanding |  | 141,858 |  |  | 141,587 |  |  | 141,022 |  |  | 140,724 |
Market price range of common stock: |  |  |  |  |  |  |  |
High |  | $ | 81.16 |  |  | $ | 78.31 |  |  | $ | 76.16 |  |  | $ | 89.89 |
Low |  | $ | 72.17 |  |  | $ | 66.33 |  |  | $ | 63.41 |  |  | $ | 74.30 |
__________________________ (a) Our provision for income taxes decreased in the first quarter of 2017 by $13.7 million due to our adoption of ASU 2016-09. (b) Our provision for income taxes decreased in the fourth quarter by $19.7 million due to the benefit of deductions under section 199 of the Internal Revenue Code and $12.1 million due to the impact of the Tax Act.
2016 |  | March 31 |  | June 30 |  | September 30 |  | December 31
Revenues: |  |  |  |  |  |  |  |
Transportation |  | $ | 2,713,688 |  |  | $ | 2,881,496 |  |  | $ | 2,998,583 |  |  | $ | 3,110,978 |
Sourcing |  | 360,255 |  |  | 418,245 |  |  | 357,171 |  |  | 303,997 |
Total revenues |  | 3,073,943 |  |  | 3,299,741 |  |  | 3,355,754 |  |  | 3,414,975 |
Costs and expenses: |  |  |  |  |  |  |  |
Purchased transportation and related services |  | 2,179,622 |  |  | 2,324,995 |  |  | 2,469,939 |  |  | 2,575,378 |
Purchased products sourced for resale |  | 330,986 |  |  | 380,531 |  |  | 327,353 |  |  | 278,081 |
Personnel expenses |  | 277,497 |  |  | 270,251 |  |  | 256,883 |  |  | 260,305 |
Other selling, general, and administrative expenses |  | 86,886 |  |  | 90,217 |  |  | 90,312 |  |  | 107,646 |
Total costs and expenses |  | 2,874,991 |  |  | 3,065,994 |  |  | 3,144,487 |  |  | 3,221,410 |
Income from operations |  | 198,952 |  |  | 233,747 |  |  | 211,267 |  |  | 193,565 |
Net income |  | $ | 118,963 |  |  | $ | 143,090 |  |  | $ | 129,028 |  |  | $ | 122,303 |
Basic net income per share |  | $ | 0.83 |  |  | $ | 1.00 |  |  | $ | 0.90 |  |  | $ | 0.86 |
Diluted net income per share |  | $ | 0.83 |  |  | $ | 1.00 |  |  | $ | 0.90 |  |  | $ | 0.86 |
Basic weighted average shares outstanding |  | 143,525 |  |  | 142,998 |  |  | 142,611 |  |  | 141,711 |
Dilutive effect of outstanding stock awards |  | 133 |  |  | 218 |  |  | 272 |  |  | 453 |
Diluted weighted average shares outstanding |  | 143,658 |  |  | 143,216 |  |  | 142,883 |  |  | 142,164 |
Market price range of common stock: |  |  |  |  |  |  |  |
High |  | $ | 75.11 |  |  | $ | 76.10 |  |  | $ | 75.69 |  |  | $ | 77.89 |
Low |  | $ | 60.31 |  |  | $ | 69.84 |  |  | $ | 66.62 |  |  | $ | 65.57 |

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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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